Vitamins to Increase Sperm Count: Do They Really Work?

Vitamins to increase sperm count and male fertility supplements are widely promoted as ways to improve sperm count, motility, and morphology. Some studies have reported improvements in specific semen parameters in certain men, but these changes do not necessarily increase the chances of pregnancy or live birth.

In many countries supplements are not evaluated according to the same pre-market effectiveness requirements applied to medications. Thus They should not replace proper evaluation of the underlying cause of low sperm count or poor motility, here is what current evidence says about their potential benefits and limitations.(1)(2)

Do Vitamins to Increase Sperm Count Actually Work?

1. Most Commercial Ingredients Are Not Supported by Strong Evidence

In a 2020 study published in the journal *Urology* researchers examined several widely available male fertility supplements containing a total of 90 different ingredients. They found that only 17% of these ingredients had positive scientific evidence supporting their effects on sperm parameters. (2)

According to the study, the ingredients with the highest supporting evidence in male fertility supplements were:

L-carnitine
Vitamin E
Vitamin C
Coenzyme Q10
Zinc

2. Not Enough Evidence to Confirm They Improve Pregnancy Rates

In a larger study conducted in 2025, researchers found that some supplements may improve sperm parameters, such as sperm count or motility. However, they did not find sufficient evidence showing that these improvements actually increased the chances of pregnancy. (1)

This is mainly because most studies focus on whether supplements improve semen parameters, while only a small number examine their direct effect on pregnancy outcomes.

Therefore, the evidence does not necessarily suggest that these supplements are ineffective. Rather, further research is needed to confirm whether they can meaningfully improve the chances of pregnancy and live birth.(1)

Which Male Fertility Supplements Have Been Studied?

Some vitamins and supplements have shown promising results in improving sperm count, motility, or morphology. However, their benefits vary from one man to another, and none has yet been conclusively proven to increase the chance of pregnancy. These include:(1)(2)

L-carnitine
Coenzyme Q10
Zinc and folic acid
Selenium

In summary

There are currently no vitamins to increase sperm count that have been proven to improve pregnancy or live birth rates in all men. Some supplements, including L-carnitine, CoQ10, and selenium, have been associated with improvements in certain semen analysis parameters in some studies.

However, the quality of the available evidence remains low, and it is still uncertain whether these improvements lead to higher pregnancy or live birth rates.

Supplements should therefore be considered an option that a doctor may discuss in selected cases, rather than a routine treatment used without first identifying the underlying causes of reduced fertility. (1)(2)

Frequently Asked Questions (FAQs)

What Is the Right First Step When Sperm Count Is Low?

The first step should not be to buy a dietary supplement.

It is important to identify the cause of the low sperm count or reduced motility, as the appropriate treatment depends on the underlying cause. (3)

When Might Supplements Be Helpful?

A doctor may recommend a specific supplement when a confirmed nutritional deficiency is present or when a condition affects the absorption of certain nutrients.

Some supplements may also be discussed in cases of unexplained infertility after treatable causes have been ruled out. However, their benefits remain uncertain, so they are not routinely recommended for everyone without medical advice. (4)

Do Vitamins Increase Sperm Count Quickly?

Some vitamins and nutrients, such as zinc and folic acid, may help improve sperm count according to certain studies.(1)

However, There are no vitamins to increase sperm count quickly or reliably in every man. Sperm production takes approximately 74 days, so the effects of any supplement are not expected to appear within a few days. It may take around three months before any changes can be properly assessed through a semen analysis. (5)