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As men age, their testosterone gradually declines at a rate of about one percent per year after the age of 30. While this is a normal process, some men experience a more rapid decrease in testosterone resulting in low levels, defined as less than 300 ng/dl. This can result in several side effects including low libido, decreased fertility, changes in sleep patterns, lack of motivation, reduced muscle mass, and depression.
Best Testosterone Booster Supplements - Our Top Picks
- Best Overall Testosterone Booster: Xwerks Rise
- Best Testosterone Booster for Athletes: Hunter Evolve Test
- Best Testosterone Booster for Muscle Gain: Kaged Ferodrox
- Best Testosterone Booster for Men Over 40: TestoFuel
- Best Natural Testosterone Booster: Transparent Labs Vitality
- Best Testosterone Booster for Working Out: TestoLab Pro®
- Best Budget Testosterone Booster: Xwerks Rise
- Best Testosterone Booster for Weight Loss: TestoLab Pro®
- Best for Testosterone Booster Runners: Kaged Ferodrox
- Best Testosterone Booster for Energy: Prime Male™ Vitality Complex
If your levels are low enough, your doctor may prescribe TRT (testosterone replacement therapy), but if your levels are only slightly low, or on the lower end of normal, they may simply recommend lifestyle changes such as exercising, improving your diet, minimizing stress, and improving your sleep. Some docs may also suggest taking a testosterone booster, which is a category of dietary supplements known to promote increases in your test levels.
That said, only some testosterone-boosting ingredients have scientific data to back them up, so it's important to do your research before purchasing. But you're in luck, the ACTIVE Reviews Team has formulated a well-researched list of the best testosterone boosters, helping you choose an option that best suits your needs.
Why Trust Us?
The health and safety of ACTIVE's readers is of the utmost importance to us. To ensure your well-being when consuming dietary supplements, the ACTIVE.com editorial team prioritizes products that are independently tested by a third party. We've consulted with a team of nutritionists and dieticians to ensure the products we feature are of the highest standard. This helps us create the most accurate, authentic review content for our readers.
Disclaimer: Exercise caution when taking supplements. Always make sure to consult with your doctor before trying a new supplement or pill. Dietary supplements are not a substitute for a balanced diet and regular exercise. Any supplements taken should be used in accordance with a healthy lifestyle.
Best Overall Testosterone Booster - Xwerks Rise
SPECS
- Price: $1.63/serving
- Form: Capsule
- Dosage: 2 capsules
Why We Picked It
We chose Xwerks Rise as the best overall test booster because it's formulated for strength and energy, two prerequisites for any tough training session. It also has one of the cleanest labels on the market with just four ingredients (plus BioPerine for increased absorption) connected with increasing testosterone, increasing libido, and improving body composition.(2,3,4) But it contains generous amounts of all four, sourced from natural ingredients.
The first ingredient is the tried-and-true test-supporter zinc, at a fairly standard dosage of 15 milligrams, or 136% of the RDA recommended daily intake. Like some other boosters on this list, it contains longjack or "tongkat ali," but at a best-in-class dosage of 400 milligrams per serving. The fulvic acid-rich compound shilajit is most often included at 100-150 milligrams. In Rise, you get 250. The 6 micrograms of boron are right in line with common dosage recommendations for testosterone support.
Why we picked it
We liked that this supplement includes only a few ingredients to pinpoint testosterone production for enhanced training rather than a shotgun approach.
Best For
- Users who value research-backed ingredients
- Those who prefer not to have to swallow large doses of capsules
Not Best For
- Users who prefer a more comprehensive testosterone booster
- Those with sensitive stomachs
Best Testosterone Booster for Athletes - Hunter Evolve Test
SPECS
- Price: $3/serving
- Form: Capsules
- Dosage: 6 capsules
Why We Picked It
Taking testosterone pills for men can potentially benefit athletic performance. Studies have even shown that women who are regularly physically active exhibit higher levels of endurance and lean mass with moderate increases in testosterone.(1) We chose Hunter Evolve Test for this category because it can be taken to help boost testosterone levels, strength, and energy in male and female athletes.
Hunter Test features natural mass-building ingredients that fall into three categories: Muscle Mass Amplifier, Energy Ignition, and Performance Power. It's a bit more expensive, but if you purchase the three-bottle bundle, you'll receive a free fourth bottle, Boss Workouts, and a 12-week transformation guide.
Why we picked it
Hunter Evolve Test contains natural ingredients, is banned-substance free, and is safe for both male and female athletes.
Best For
- Athletes who need a natural test booster that is free from banned or synthetic ingredients
- Female athletes interested in taking a T booster
- Anyone who can benefit from a bundle-and-save deal
Not Best For
- Those on a tight budget, as the cost of each serving is high
- Men who don't do well with swallowing multiple capsules
Best Testosterone Booster for Muscle Gain - Kaged Ferodrox
SPECS
- Price: $1.66 per serving
- Form: Capsule
- Dosage: 2 capsules
Why We Picked It
Gaining significant amounts of muscle is no small feat. You'll have to put in great effort in the gym and kitchen, as well as optimize your recovery. One aspect that has a sizable impact on men's ability to gain muscle is their hormonal status, specifically testosterone. Men with even a slightly low test level will struggle to gain and maintain muscle.(5) One possible solution for this may be supplementing with a high-quality test booster. Our top pick for the best one for muscle gain is Kaged Ferodrox due to its high-quality ingredients and simple ingredient panel.
This testosterone booster supplies research-backed doses of several effective male hormone support ingredients including 600 milligrams of ashwagandha, 200 milligrams of eurycoma longifolia, and 200 milligrams of PrimaVie® (shilajit extract). One unique ingredient found in this supplement that's not found in all test boosters is DIM (Diindolylmethane), an aromatase inhibitor that can prevent the conversion of testosterone into estrogen. These ingredients combined can support healthy testosterone levels allowing you to gain muscle and strength.
Why we picked it
We liked that this test booster supplies only effective ingredients in research-backed doses while using transparent labeling to allow you to know exactly what's in it.
Best For
- Men looking to optimize testosterone levels to help promote muscle gains
- Users who value research-backed ingredients
Not Best For
- Those who want a more comprehensive testosterone booster
Best Testosterone Booster for Men Over 40 - TestoFuel
SPECS
- Price: $2.16 per serving
- Form: Capsule
- Dosage: 4 capsules per day
Why We Picked It
It's no question that as we age, our testosterone levels slowly decline. This is a natural part of the aging process that is largely unavoidable. In certain cases, some men may experience a more sizable drop in T levels after the age of 40. This may result in clinically low testosterone levels and some potential side effects such as fatigue, reduced muscle mass, and decreased libido. While there are many lifestyle changes that can have quite an impact on your test levels, there are also a number of testosterone-boosting supplements that can also help raise your levels.
TestoFuel's active ingredient list includes many of the common testosterone-boosting ingredients such as D-aspartic acid, boron, and vitamin D. In addition they include maca root powder and panax ginseng which may increase sexual desire, though research on their effect on testosterone levels is limited. They also provide 100mg of oyster extract, which is high in zinc, an important nutrient for testosterone production, especially in men over 40. Last but not least, they include a 70-milligram dose of magnesium, an important cofactor in processes throughout the body, including test production.
Why we picked it
We liked that this test booster supplies a wide range of high-quality active ingredients that cater to increasing testosterone for men over 40.
Best For
- Those who prefer clinically-dosed active ingredients
- Users who appreciate transparent labeling
- Men over 40
Not Best For
- Users who prefer ingredients with extensive scientific data
- Those on a tighter budget
Best Natural Testosterone Booster - Transparent Labs Vitality
SPECS
- Price: $1.83 per serving
- Form: Capsule
- Dosage: 2 capsules
Why We Picked It
Testosterone boosters are often guilty of taking an over-complicated approach to formulation, including a little of everything, but often at inadequate dosages. That's not the case with Transparent Labs Vitality, as its testosterone-boosting formula provides several active ingredients to help promote healthy T levels in men.
These ingredients include ashwagandha extract, Shilajit extract, quercetin dihydrate, zinc, and eurycoma longifolia, all of which have data to support their role in testosterone production.(2,3,6,7,8) In most cases, men who have low testosterone will see the most benefit from such a supplement, whereas results will be smaller in those who start out with normal levels.
Why we picked it
We liked that this test booster supplies only effective ingredients and uses 100% transparent labeling to show you exactly what the supplement contains.
Best For
- Users looking for a test booster with science-backed ingredients and dosing
- Men looking to increase testosterone levels naturally
- Those who value transparent labeling
Not Best For
- Those on a tight budget
- Users who prefer a supplement that is third-party tested
BUY: Transparent Labs Vitality
Best Testosterone Booster for Working Out - TestoLab Pro®
SPECS
- Price: $2.30/serving
- Form: Capsules
- Dosage: 4 NutriCaps®
Why We Picked It
So, you're on a mission to raise your testosterone levels. While many supplements on the market can help you achieve this, many of them fail to provide a proper dosage of the main active ingredients. When looking for the best testosterone booster for working out, we wanted to ensure it included the top clinically-researched test-boosting ingredients in the right science-backed doses. Our top pick for the best overall test booster is Testolab Pro® for its comprehensive ingredient and effective ingredient panel.
TestoLab Pro's® testosterone-boosting formula provides a slew of active ingredients known to promote healthy test levels in men. These include ashwagandha extract, D-aspartic acid, boron, Mucuna pruriens extract, and luteolin, all of which have data to support their role in testosterone production. In most cases, men with low testosterone will benefit most from such a supplement, whereas results will be smaller in those who start out with normal levels.
Testolab Pro® is most effective when taken as part of a strength and cardio fitness regimen. You also won't need to cycle this supplement, as it's designed for long-term use and reportedly "gets stronger the longer you take it."
Why we picked it
We like that this supplement supplies many of the top testosterone-boosting ingredients in science-based doses, and it's meant for men of all ages, whether they're beginners or seasoned pros.
Best For
- Men looking for a testosterone booster with a comprehensive, science-backed ingredient panel
- Users who want a T booster designed for daily use
- Those who appreciate a 30-day money-back guarantee
Not Best For
- Those on a restrictive budget, as the cost of each serving can add up
- Men who don't do well with swallowing multiple capsules
Best Budget Testosterone Booster - Xwerks Rise
SPECS
- Price: $1.63/serving
- Form: Capsule
- Dosage: 2 capsules
Why We Picked It
Many of the testosterone boosters on the market cost a pretty penny, and the cost is especially impactful if you plan on taking it for an extended period. That being said, there are also some more affordable options on the market for those with budget in mind. We don't think of "budget" in terms of how cheap it is; we consider the amount of value you get for the price point. That's why we've selected Xwerks Rise for this category. You may find T boosters that are less expensive, but odds are they won't have the same quality of ingredients.
Xwerks Rise uses four natural ingredients with fully transparent amounts and doses. The first ingredient is immune and test-supporter zinc, at a standard dosage of 15 milligrams, or 136% of the RDA recommended daily intake. Rise also contains longjack or "tongkat ali" at a premium dosage of 400 milligrams per serving. There are 250 milligrams of the fulvic acid-rich compound shilajit, well over the typical dosage. Lastly, it has 6 micrograms of boron, the recommended amount for testosterone support from this trace mineral.
Why we picked it
It's the least expensive T booster on our list, and we believe it provides a solid balance between effective ingredients and price point making it an excellent value.
Best For
- Men who are on a tighter budget but still wanting to boost their testosterone
- Those who value comprehensive labeling
- Users who prefer not to have to swallow several capsules per serving
Not Best For
- Those who prefer only ingredients with extensive scientific backing
- Users in search of a more inclusive ingredient panel
Best Testosterone Booster for Weight Loss - TestoLab Pro®
SPECS
- Price: $2.30 per serving
- Form: Capsules
- Dosage: 4 capsules
Why We Picked It
While losing weight mainly revolves around eating fewer calories than you burn to promote a caloric deficit, your hormone status also influences your ability to lose weight. Men with low testosterone often may experience difficulty losing body fat and increasing muscle mass. Increasing testosterone levels, when low, has been associated with improved success in gaining lean body mass and reducing fat mass.(9) One such way to do so is by using a high-quality testosterone booster, which is why our top pick for the best test booster for weight loss is—once again—TestoLab Pro®.
TestoLab's testosterone-boosting formula provides active, test-level-promoting ingredients like ashwagandha extract, D-aspartic acid, boron, Mucuna pruriens extract, and luteolin, all of which have supported data for their roles in testosterone production. Men with naturally lower testosterone levels will likely see the most weight loss benefits from such a supplement.
Why we picked it
We like that this supplement supplies many of the top testosterone-boosting ingredients in science-based doses—a perfect accompaniment to a weight-loss diet.
Best For
- Men who are looking to improve weight loss through optimizing their hormones
- Users looking for a testosterone booster with a comprehensive ingredient panel
- Anyone who appreciates a 30-day money-back guarantee
Not Best For
- Those on a restrictive budget, as the cost of each serving can add up
- Men who don't do well with swallowing multiple capsules
Best Testosterone Booster for Runners - Kaged Ferodrox
SPECS
- Price: $1.66 per serving
- Form: Capsules
- Dosage: 2 capsules
Why We Picked It
Running is an energy-demanding endurance sport that requires significant time and dedication to training to excel at. It's not uncommon for competitive runners to put in over 35 miles per week, whether that be on the pavement or a treadmill. This puts a lot of stress on the body that, in certain cases, can take a toll on your hormone levels. For men, in particular, this could mean low testosterone. While reducing your training volume will likely help normalize your T levels, some runners may consider alternatives such as taking a testosterone booster.
Kaged Ferodrox contains many top ingredients known to potentially help increase testosterone levels and vitality. These ingredients include 600 milligrams of KSM-66® ashwagandha, 200 milligrams of eurycoma longifolia, and 200 milligrams of PrimaVie® (shilajit extract). One unique ingredient in this supplement that isn't typically found in all test boosters is DIM (Diindolylmethane), an aromatase inhibitor that can prevent the conversion of testosterone into estrogen.
Black pepper extract is also used to help enhance the bioavailability of the ingredients. These ingredients were combined to help support healthy testosterone levels allowing you to recover from high-intensity endurance training.
Why we picked it
Kaged Ferodrox supplies researched amounts of the top testosterone-boosting ingredients and is third-party tested.
Best For
- Male runners looking to improve their recovery from training
- Those who value clinical doses of active ingredients
- Athletes who prefer third-party tested supplements
Not Best For
- Users who want a more comprehensive testosterone booster
- Users who may have sensitivity to zinc
Best Testosterone Booster for Energy - Prime Male™ Vitality Complex
SPECS
- Price: $2.50 per serving
- Form: Capsule
- Dosage: 4 capsules per day
Why We Picked It
Low testosterone has been shown to affect sex drive, sleep, and mood in men and can lead to increased fatigue.(10) Luckily, using a testosterone supplement to boost your levels may help improve your overall energy, libido, and cognitive function. We like Prime Male™ Vitality Complex because it contains a 12-ingredient list of clinically-proven T boosters to naturally elevate your energy and focus without using stimulants. This vitality supplement is even endorsed by "Ivan Drago" himself, Dolph Lundgren.
The Prime Male™ line of testosterone supplements can be spendy; however, the brand offers excellent "support packs" such as a 4-month supply (buy three, get one free) that includes the Boss Prime video program and nutrition E-books. The dosage is four capsules, but they can be spread out over the course of the day and taken with meals.
Why we picked it
Features 12 clinically-proven ingredients for a natural testosterone and energy boost.
Best For
- Men who want a non-stimulant boost of testosterone and energy
- Those who prefer products with discernible ingredients and exact amounts
- Users who need multiple bottles and can benefit from a bundle discount
Not Best For
- Men who have difficulty swallowing multiple capsules
- Users on a tight budget
BUY: Prime Male™ Vitality Complex
Read our full TestoFuel review.
What is a Testosterone Booster?
A testosterone booster is a medication or supplement intended for elevating low testosterone levels in the blood for natural increases in performance, energy, and strength. These supplements are mostly used by men, as they produce higher testosterone levels than women. It will occasionally be used by female athletes—with doctor or coach guidance—depending on current regulations.
Benefits of Testosterone Booster Pills
While testosterone boosters aren't necessary for men with healthy T levels, those whose levels are on the lower side of the recommended range may benefit from taking them. In some cases prescription medications will be needed to get your testosterone levels within the normal range, thus it's always best to consult your doctor before starting any supplements. For those looking to optimize their testosterone levels, regularly taking a testosterone booster can come with several potential benefits.
May Help Bring Levels Within Normal Range
Preliminary research suggests that multi-ingredient testosterone boosters may reliably increase testosterone levels when they are slightly low.(11)
That being said, long-term data in this area is lacking therefore more high-quality studies need to be completed before drawing conclusions.
If you suffer from low testosterone, consider asking your doctor if taking a testosterone booster would be an effective option before turning to prescription drugs.
May Help Enhance Bone Density
Low testosterone has been repeatedly associated with impaired bone mineral density in men, thus increasing your T levels within the normal range can help support healthy bone mass.(12)
Increasing your bone mineral density can help reduce the risk of fractures or osteoporosis, especially after the age of 35, when bone density may naturally decline.(13)
May Help Support Healthy Muscle Mass
Testosterone plays an important role in regulating your ability to maintain and gain muscle mass.(5) When testosterone levels are low, you may find it difficult to gain noticeable amounts of muscle, regardless of how hard you work in the gym.
Testosterone boosters may help some men increase their levels slightly, in turn allowing them to gain and maintain muscle mass.
May Help Improve Libido
Many testosterone boosters also include ingredients that have been shown to increase male libido or sex drive. The most common libido-boosting ingredients include ginkgo biloba, zinc, DHEA, and ginseng, among others.
Depending on which test booster you choose, you may be able to effectively improve your libido, though research in this area is lacking.
May Help Boost Fertility
Testosterone plays a vital role in male fertility as it serves as regulator of sperm production and impacts your sex drive.(14) Low testosterone is a potential factor in impaired fertility according to one study of 853 males undergoing IVF (in vitro fertilization) with their partners.(15) Thus increasing your testosterone levels through using a test booster may also have a beneficial effect when it comes to male fertility.
How We Chose the Best Testosterone Boosters
When analyzing the top products on the market, there were several factors we took into consideration to give you the best testosterone boosters.
Effective Ingredients
With so many testosterone boosters on the market, you can imagine that several of them may not be the highest quality when it comes to ingredients. We searched for tried-and-true products with research-backed ingredient panels to provide you with the most effective ingredients.
Dosing
A testosterone booster can have all the right ingredients, but if they aren't dosed properly, you may not see any real effect when taking it. We sought products that supplied science-based doses of the top testosterone-boosting ingredients.
Price
Like many dietary supplements, test boosters can range quite a bit in price, with some of them asking seemingly ridiculous prices. We looked for testosterone boosters that struck a good balance between effective ingredients and price to give you the best value.
Safety
Some of the testosterone boosters on the market contain potentially questionable ingredients and may not have the user's health as their top priority. Knowing this, we vetted each product to ensure the safety and efficacy of the ingredients they contain.
What to Look for in the Best Testosterone Boosters
Common Ingredients
Here are some of the most common ingredients included in the testosterone boosters currently on the market:
- D-aspartic acid: An amino acid that can boost total testosterone levels, the common dose is around 2,000mg(16)
- Ashwagandha extract: An ayurvedic herb that may help increase testosterone, the common dose is around 600mg(6)
- Vitamin D: Low vitamin D is associated with impaired testosterone production, and dosing is highly variable(17)
- Magnesium: A mineral that supports testosterone production, commonly dosed at 50-100mg(18)
- Zinc: Vital mineral in the formation of testosterone, commonly dosed at 40-60mg(19)
Other common ingredients include boron, fenugreek, and ginseng, among others.
Dosing
Proper dosing is very important to ensure you are maximizing the benefits of a given active ingredient. Some brands underdose ingredients, making the supplement ineffective and a waste of resources. To ensure proper doses, look for brands that use transparent labeling. This allows you to see exactly how much of each ingredient is in the product.
Price
The prices of testosterone boosters vary greatly, with some of them being quite expensive. When shopping for a test booster, consider how much you are willing to spend. If this is a supplement that you are planning on taking for an extended period of time, consider the long-term costs. In the end, you'll want to choose a testosterone booster that both fits your budget and provides the active ingredients you are looking for.
Safety and Potential Side Effects
There are many shady companies that produce testosterone boosters that may contain potentially harmful ingredients. In addition, some ingredients found in testosterone boosters may cause certain negative side effects. Always purchase your supplements from a reputable brand to ensure the safety of ingredients. In addition, if you have a pre-existing medical condition, it's always best to check with your healthcare provider before taking a testosterone booster.
Our Final Takeaway
When properly dosed and taken by those with slightly lower testosterone levels, boosters can be an effective method of elevating your T levels, enhancing your bone density, supporting lean muscle mass, and improving your libido and fertility. There are several testosterone-boosting products available in stores and online with all kinds of ingredient concoctions, but we tend to recommend products that are quality-tested and have clear labels and dosages. We've done our research due diligence, but that doesn't mean you should take our word for it. If you still have lingering questions or concerns, consult your doctor before starting a testosterone booster.
FAQs About Testosterone Boosters
Who should use testosterone boosters?
In general, testosterone boosters work best for men who have slightly low testosterone or are experiencing low libido. Active men with normal testosterone levels, especially those who lift weights, will likely not see much of a benefit from taking them. If you feel like your testosterone might be low, it's best to get your levels checked by your doctor so they can advise you on the best options.
How do testosterone boosters work?
Testosterone boosters work by upregulating the production of testosterone in the Leydig cells in your testicles. Different ingredients accomplish this through different mechanisms, though the most common ones work to increase FSH (follicle stimulating hormone) and LH (luteinizing hormone), two hormones responsible for turning on testosterone production. Other ingredients may work by preventing the conversion of testosterone into estrogen.
What should I look for in testosterone boosters?
One of the most important things to look for in a good testosterone booster is transparent labeling. This means that all of the active ingredients and their dosages are clearly indicated on the label. This allows you to do your research and determine if a particular supplement has the ingredients in the dosage you are looking for.
What should I avoid in testosterone boosters?
When shopping for a testosterone booster, avoid products that make overly bold claims or compare their products to anabolic steroids. In the world of testosterone boosters, there are a lot of shady companies that may not have your best interest in mind. Make sure to fully vet each product before making a purchase.
What causes low testosterone?
A natural decline in testosterone is normal as men age at a rate of about 1 percent per year after the age of 30. That said, some may experience a more significant drop resulting in low testosterone defined as below 300 ng/dl. Most often this is caused by unhealthy lifestyle choices such as smoking, drinking, not exercising, or being overweight. In other cases, it may be caused by actual damage to the testicles which are responsible for making testosterone, or a number of hormonal disorders that may impact testosterone production.
How do I know if I have low testosterone?
Initially you may experience one of the several tell-tale symptoms of low testosterone which include fatigue, unregulated sleep patterns, low sex drive, depressed mood, and erectile dysfunction, among others. If you experience any of these symptoms, you should make an appointment with your healthcare practitioner to get your levels checked. If they come back below 300 ng/dl then you are generally diagnosed as having low testosterone.
Are testosterone boosters worth it?
A high-quality testosterone booster can certainly be effective for many men with low testosterone, thus you can say they are most likely worth it in this population. On the other hand, if you are an active male who has normal testosterone but is looking to increase it, you may be wasting your money by purchasing a test booster as you may not get the results you're looking for.
How can I raise my testosterone levels fast?
The best way to quickly raise your testosterone fast is through lifestyle and diet changes. These include:
- Regular exercise, including lifting weights
- Losing weight if you are obese
- Eating a whole-food diet with plenty of protein and vegetables
- Quitting smoking or excessive drinking
- Minimizing your stress and cortisol levels
- Supplementing with vitamin D if your levels are low
- Supplementing with zinc and magnesium if your levels are low
- Ensuring you are getting enough sleep
- Taking a testosterone boosting supplement
If you have done all of these things and your testosterone levels are still trending low or you are still experiencing symptoms, then would be the time to talk to your doctor to see if testosterone replacement therapy would be right for you.
Is it healthy to take testosterone boosters?
Most testosterone boosters contain natural ingredients derived from plant sources making them relatively safe. That being said, there are many sketchy companies that sell testosterone boosters that contain questionable ingredients. This is why it's always important to purchase products from a reputable brand that is fully transparent with the ingredients that their products contain. As with taking any supplement, there is always a risk, thus it's best to check with your healthcare provider before starting to take any new supplement.
Protein | Pre-Workouts | Creatine | Multivitamins | Vitamin B12 | Collagen | Testosterone Boosters | Greens Powder | Fish Oil | BCAAs
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
References
- Hirschberg AL, Elings Knutsson J, Helge T, et alEffects of moderately increased testosterone concentration on physical performance in young women: a double-blind, randomised, placebo-controlled study. British Journal of Sports Medicine 2020;54:599-604.
- Pandit, S., Biswas, S., Jana, U., De, R. K., Mukhopadhyay, S. C., & Biswas, T. K. (2016). Clinical evaluation of purified Shilajit on testosterone levels in healthy volunteers. Andrologia, 48(5), 570–575. https://doi.org/10.1111/and.12482
- Leisegang, K., Finelli, R., Sikka, S. C., & Panner Selvam, M. K. (2022). Eurycoma longifolia (Jack) Improves Serum Total Testosterone in Men: A Systematic Review and Meta-Analysis of Clinical Trials. Medicina (Kaunas, Lithuania), 58(8), 1047. https://doi.org/10.3390/medicina58081047
- Pizzorno L. (2015). Nothing Boring About Boron. Integrative medicine (Encinitas, Calif.), 14(4), 35–48.
- Shin, M. J., Jeon, Y. K., & Kim, I. J. (2018). Testosterone and Sarcopenia. The world journal of men's health, 36(3), 192–198. https://doi.org/10.5534/wjmh.180001
- Lopresti, A. L., Drummond, P. D., & Smith, S. J. (2019). A Randomized, Double-Blind, Placebo-Controlled, Crossover Study Examining the Hormonal and Vitality Effects of Ashwagandha ( Withania somnifera) in Aging, Overweight Males. American journal of men's health, 13(2), 1557988319835985. https://doi.org/10.1177/1557988319835985
- Wang, D., Li, Y., Zhai, Q. Q., Zhu, Y. F., Liu, B. Y., & Xu, Y. (2022). Quercetin ameliorates testosterone secretion disorder by inhibiting endoplasmic reticulum stress through the miR-1306-5p/HSD17B7 axis in diabetic rats. Bosnian Journal of basic medical sciences, 22(2), 191–204. https://doi.org/10.17305/bjbms.2021.6299
- Fallah, A., Mohammad-Hasani, A., & Colagar, A. H. (2018). Zinc is an Essential Element for Male Fertility: A Review of Zn Roles in Men's Health, Germination, Sperm Quality, and Fertilization. Journal of reproduction & infertility, 19(2), 69–81.
- Traish A. M. (2014). Testosterone and weight loss: the evidence. Current opinion in endocrinology, diabetes, and obesity, 21(5), 313–322. https://doi.org/10.1097/MED.0000000000000086
- de Almeida Ferreira, M., & Mendonça, J. A. (2022). Long-term testosterone replacement therapy reduces fatigue in men with hypogonadism. Drugs in context, 11, 2021-8-12. https://doi.org/10.7573/dic.2021-8-12
- Lazarev A, Bezuglov E. Testosterone Boosters Intake in Athletes: Current Evidence and Further Directions. Endocrines. 2021; 2(2):109-120. https://doi.org/10.3390/endocrines2020011
- Shigehara, K., Izumi, K., Kadono, Y., & Mizokami, A. (2021). Testosterone and Bone Health in Men: A Narrative Review. Journal of clinical medicine, 10(3), 530. https://doi.org/10.3390/jcm10030530
- Demontiero, O., Vidal, C., & Duque, G. (2012). Aging and bone loss: new insights for the clinician. Therapeutic advances in musculoskeletal disease, 4(2), 61–76. https://doi.org/10.1177/1759720X11430858
- Grande, G., Barrachina, F., Soler-Ventura, A., Jodar, M., Mancini, F., Marana, R., Chiloiro, S., Pontecorvi, A., Oliva, R., & Milardi, D. (2022). The Role of Testosterone in Spermatogenesis: Lessons From Proteome Profiling of Human Spermatozoa in Testosterone Deficiency. Frontiers in endocrinology, 13, 852661. https://doi.org/10.3389/fendo.2022.852661
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