Testosterone boosting supplements — do they work

Do testosterone boosting supplements really work?

Usually, not in the way advertisements suggest.

A 2024 systematic review examined 52 studies involving 27 proposed testosterone boosters. The researchers found that most ingredients did not consistently increase total testosterone. A small number showed possible benefits in particular groups, but the evidence was not strong enough to treat testosterone boosters as a reliable substitute for medical treatment.

That matters because the phrase “testosterone booster” covers a huge range of products. One capsule may contain vitamins and minerals; another may contain herbal extracts, amino acids and several proprietary ingredients.

There is no guarantee that a product marketed as a T booster will meaningfully change a man's testosterone level.

Why are these supplements so popular?

The marketing is simple: higher testosterone is associated with greater muscle mass, sexual desire, energy and physical performance. That makes “boost your testosterone naturally” an attractive promise.

But symptoms such as fatigue, low libido and reduced strength do not automatically mean testosterone is low. They can also occur with poor sleep, obesity, stress, depression, certain medicines and other medical conditions.

Doctar's guide to understanding testosterone levels explains why a testosterone result needs to be interpreted alongside symptoms and clinical context.

Which ingredients have been studied?

Zinc

Zinc is essential for normal health, including reproductive function. Men with zinc deficiency may have abnormal testosterone levels, so correcting a genuine deficiency can make sense.

That does not mean taking large amounts of zinc will keep raising testosterone in men who already have adequate zinc. Excessive supplementation can itself cause health problems.

A review of popular testosterone supplements found that many products contained amounts of vitamins and minerals substantially above recommended daily allowances, with some exceeding established upper limits.

Vitamin D

Vitamin D and testosterone have been studied extensively, but the results are not straightforward.

A 2026 systematic review and meta-analysis of randomized trials found no clear, reproducible effect of vitamin D supplementation on total testosterone or androgen bioavailability markers in adult men. The researchers rated the certainty of much of the evidence as low or very low.

Earlier research produced more encouraging findings, which illustrates why the topic remains debated. A 2011 trial reported increased testosterone after vitamin D supplementation in men who initially had vitamin D deficiency and relatively low testosterone.

The practical message is simple: treating vitamin D deficiency may be appropriate for general health, but vitamin D should not be viewed as a guaranteed testosterone booster.

Ashwagandha

Ashwagandha has received considerable attention in men's-health supplements.

A systematic review of herbal ingredients found some evidence that ashwagandha and fenugreek extracts can increase testosterone in certain studies. However, much of the evidence involved younger, generally healthy men, with small samples and different extracts and doses. The authors concluded that more research was needed before firm conclusions about efficacy and safety could be made.

So “ashwagandha may affect testosterone” is a more defensible statement than “ashwagandha will boost testosterone.”

Fenugreek

Fenugreek has also shown potentially positive effects in some clinical studies. But again, the evidence is not consistent enough to assume that every fenugreek supplement will raise testosterone.

The product matters, too. Different extracts can contain different concentrations of active compounds, making results from one research study difficult to apply to every commercial product.

What about Tribulus, shilajit and other popular boosters?

These ingredients are widely promoted online, but the evidence varies considerably.

The 2024 systematic review found that most proposed testosterone boosters failed to consistently increase total testosterone. It identified a few ingredients, including Eurycoma longifolia and purified shilajit extract, as possibly effective in particular populations, but this is very different from proving that they work reliably for all men.

Another systematic review of popular testosterone and erectile-dysfunction supplement ingredients found that many ingredients had contradictory, negative or insufficient evidence. Importantly, the researchers found no published randomized controlled trials of the whole supplement products themselves that they evaluated.

That distinction is easy to miss on a supplement label. An ingredient may have one promising study while the finished product has never been properly tested.

Are testosterone boosters safe?

“Natural” does not automatically mean safe.

One analysis of 50 testosterone-boosting supplements found 109 different ingredients across the products. Only a minority of the products had published evidence supporting their testosterone claims, while some contained vitamins or minerals above established upper intake limits.

Products containing multiple ingredients can also make it difficult to identify which ingredient is responsible for a side effect or interaction.

There is another concern: supplement labels and marketing claims are not equivalent to clinical evidence. A product can be sold with an impressive list of ingredients without having strong evidence that the finished formulation improves testosterone.

Can supplements replace TRT?

No.

Testosterone replacement therapy (TRT) is a medical treatment for men with appropriately diagnosed testosterone deficiency. It is not the same thing as taking an over-the-counter supplement.

The Endocrine Society recommends diagnosing hypogonadism only when compatible symptoms or signs occur alongside consistently low testosterone levels, with appropriate testing and confirmation.

Men should therefore not jump from “I feel tired” to “I need testosterone.”

Doctar's testosterone and men's health guide provides additional context on testosterone-related products and claims.

What if testosterone is genuinely low?

The first question should be why.

Low testosterone can be associated with obesity, chronic illness, certain medicines, problems involving the testes or pituitary gland and other conditions. Treating the underlying problem may be more appropriate than simply trying to increase the testosterone number.

The Endocrine Society recommends identifying the cause of testosterone deficiency before treatment and does not recommend routine testosterone therapy for men without a proper diagnosis.

Doctar's men's health articles cover related topics including hormones, sexual health and male reproductive concerns.

What can men do naturally?

There is no magic food or supplement that reliably transforms testosterone levels.

A better starting point is overall health: adequate sleep, regular physical activity, healthy nutrition, maintaining a healthy weight and addressing excessive alcohol or other substance use.

These measures may support hormone and metabolic health, but they should not be marketed as guaranteed ways to increase testosterone.

For men primarily concerned about sexual performance, Doctar's male sexual stamina guide discusses broader factors that influence sexual function.

When should you get testosterone tested?

Testing may be worth discussing with a doctor when symptoms such as persistent low libido, erectile problems, reduced energy or unexplained changes in body composition are present.

A single testosterone result should not be used to diagnose deficiency. The Endocrine Society recommends confirming consistently low levels with appropriate morning testing when hypogonadism is suspected.

Doctar's low-libido and online sex-therapy resource can also be useful when sexual concerns involve anxiety, relationships or emotional factors.

In clinical practice, the biggest mistake is often treating the advertisement instead of the patient. A man may spend months trying different “testosterone boosters” when the real issue is poor sleep, obesity, anxiety, medication effects or an undiagnosed medical condition.

Should you buy a testosterone booster?

Before buying one, ask three questions:

• Has the finished product, rather than just one ingredient, been tested in good-quality human trials?

• Is there evidence that it improves testosterone in men like you?

• Is the product providing a nutritional correction you actually need, or simply promising a hormone boost?

If the answer to these questions is unclear, caution is reasonable.