There is no evidence suggesting that increased male libido (i.e. sex drive) is a common side effect from approved COVID-19 vaccines. Similarly, there is no evidence suggesting that the approved COVID-19 vaccines lead to decreased male libido or fertility. Common side effects include pain at the injection site, fatigue, headache, joint and muscle pain, which have the potential to temporarily decrease libido while the vaccine recipient recovers from minor side effects.

Research published in the Journal of the American Medical Association (JAMA) suggests that mRNA vaccines do not impact sperm parameters (e.g. sperm concentration, semen volume, sperm motility) in any ways that would affect fertility. 

In contrast, there is preliminary evidence that getting the COVID-19 disease can contribute to erectile dysfunction (ED) and other complications with sexual performance. For example, a small study published in the journal Andrology reported that in a survey of 100 people who identified as male, those who had COVID-19 were more likely to have experienced ED compared to those who did not have COVID-19. This suggests that being unvaccinated could potentially carry a greater risk of impacts on sexual function than being vaccinated, because the vaccines help protect against COVID-19 infection and the development of more serious symptoms. 

The U.S. Centers for Disease Control and Prevention (CDC) emphasize that the approved COVID-19 vaccines are safe and recommended, including for people who plan to have sex and/or become pregnant. The vaccines are not known to specifically impact libido and any indirect effects on libido should be only temporary. 

The spread of misinformation, particularly by public figures with large audiences such as celebrities and politicians, is dangerous because it can contribute to COVID-19 vaccine hesitancy. Health experts maintain that the approved COVID-19 vaccines are one of the most important tools for saving lives during the global pandemic.