Below you can find a list of ingredients that I have researched (with the help of a PHD student) to find out if they are scientifically proven to boost testosterone levels. These are all ingredients that can be found in testosterone boosters that are currently on the market.

Be sure to read our detailed research articles for each ingredient. We have reviewed every scientific study we could find on the impact each ingredient has on testosterone levels and production. The articles contain our detailed notes and conclusions.

You can use this ingredient research as a guide when you are looking at making your purchase decision to by analysing the ingredients on the packet and comparing them to our research notes.

Effective Ingredients:


D-Aspartic Acid: An amino acid known for enhancing blood testosterone levels.

Verdict: Very Effective. Our review of scientific studies suggests that this is probably the most impactful ingredient out of all the ones we researched. Personally I would not buy a testosterone supplement if it did not include this ingredient. Read more.


Magnesium: A mineral ion that positively influences the biosynthesis (or absorption) of testosterone.

Verdict: Effective. Read more.


Zinc (Oyster Extract): The best source of Zinc is Oyster Extract. Zinc has been proven to help the production and synthesis of testosterone by the body.

Verdict: Effective. Read more.


Vitamin D: Multiple studies have shown a correlation between Vitamin D levels and testosterone levels and have shown the importance of Vitamin D in regulating free testosterone levels.

Verdict: Effective. Read more


Fenugreek: Fenugreek is a vegetable that is commonly cultivated with a wide range of uses. Scientific studies have proven that it is effective in promoting and maintaining healthy testosterone levels.

Verdict: Effective. Read more


Ginseng: Scientific studies involving animal models and human trials indicate towards a positive beneficial effect of Ginseng extract on testosterone levels and male sexual behavior.

Verdict: Effective. Read more


Boron: Studies have proven that Boron is effective as a testosterone booster, this trace mineral is hard to come by and most people have definiciencies in it. That’s why supplements are probably the best way to get it.

Verdict: Effective. Read more.


Vitamins B6 & B12: Healthy levels of B6 and B12 are important for maintaining testosterone production. However there is no evidence to suggest that increasing the levels of these vitamins in the body above levels considered normal and healthy will increase testosterone production.

Verdict: Effective up to a point. Read more


Vitamin K2: This micronutrient is great at regulated the level of testosterone in the human body. It helps to return low testosterone levels to normal however does not directly increase the actual production of testosterone. Vitamin K2 is best stacked with other micronturients.

Verdict: Moderately Effective. Read more.


Stinging Nettle: Stinging Nettle is a medicinal plant with an array of uses. It has been proven effective in maintaining testosterone levels in older men with declining testosterone production, however will not increase the amount of testosterone in the body beyond normal levels.

Verdict: Effective for the treatment of low testosterone but not for muscle gains. Read more.


Tongkat Ali: This plant is generally known for its aphrodisiac properties. It has shown promising signs as a stimulant for increased testosterone production, although a couple of studies found that it had no effect. It’s probably not the most powerful of ingredients but can help and can’t really hurt.

Verdict: Moderately Effective. Read more


Mucuna Pruriens: Great testosterone booting properties that will give you a lift. Best used when stacked with core testosterone boosting micronutrients (DAA, magnesium, zinc, vitamin d). Read more.

Verdict: Effective


Selenium: Can help raise testosterone levels among men who are deficient in this mineral which is common. However, if you get enough Selenium in your diet it won’t do much for you and overdosing can have bad side effects. Brazil nuts are a great source of Selenium. Read more.

Verdict: Moderately Effective

Ingredients with No or Very Little Impact:


DHEA: Studies in DHEA have proven inconclusive. There is some evidence to suggest it could be effective but also negating evidence showing it has no real impact.

Verdict: No Real Proof Of Effectiveness. Read more.


Tribulus Terrestris: It’s the roots of this particular plant that are most used. However despite the marketing hype around tribulus, our review of published scientific studies overwhelmingly shows that this plant has no impact on testosterone levels.

Verdict: Not Effective. Read more.