Mefenamic acid and fertility: potential effects and concerns

May, 8 2023

Understanding Mefenamic Acid

Before we dive into the potential effects and concerns of Mefenamic acid on fertility, it's important to have a clear understanding of what this medication is and why it's used. Mefenamic acid is a type of nonsteroidal anti-inflammatory drug (NSAID) that is commonly prescribed to relieve mild to moderate pain, such as menstrual cramps, arthritis, and headache. It works by reducing inflammation and pain in the body.


As it is often prescribed for menstrual pain, many women of reproductive age take this medication regularly. This raises the question of whether Mefenamic acid has any impact on fertility. In this article, we will explore the potential effects and concerns of Mefenamic acid on fertility, including both positive and negative aspects.

Positive Effects on Fertility

There is limited research available on the impact of Mefenamic acid on fertility, but some studies have found potential positive effects. One study found that Mefenamic acid may help improve fertility in women with endometriosis, a condition where tissue similar to the lining of the uterus grows outside the uterus, causing pain and potentially affecting fertility. Mefenamic acid was found to reduce inflammation and improve the chances of conception in these women.


Another potential positive impact is that Mefenamic acid may help regulate menstrual cycles. Irregular cycles can make it difficult to predict ovulation and time intercourse for conception, so regular cycles can be beneficial for women trying to conceive. However, it's important to note that more research is needed to fully understand the relationship between Mefenamic acid and fertility.

Negative Effects on Fertility

On the other hand, some research suggests that Mefenamic acid may have negative effects on fertility. Some studies have found that NSAIDs, including Mefenamic acid, may inhibit ovulation and reduce progesterone levels. Progesterone is a hormone that is essential for the implantation of a fertilized egg and maintaining a healthy pregnancy. Reduced progesterone levels can make it difficult for a woman to conceive and increase the risk of miscarriage.


Additionally, NSAIDs have been associated with a decreased rate of embryo implantation in animal studies. This could potentially translate to a reduced chance of conception for women taking Mefenamic acid. However, more research is needed to understand the full extent of these negative effects on fertility.

Impact on Male Fertility

While the majority of research on Mefenamic acid and fertility has focused on women, it's also essential to consider the potential effects on male fertility. Limited research suggests that some NSAIDs may negatively impact sperm production and function, which could potentially affect a couple's ability to conceive. However, there is currently no specific research on Mefenamic acid's impact on male fertility, so more studies are needed to draw any conclusions.

Alternatives for Pain Relief

If you are concerned about the potential impact of Mefenamic acid on your fertility, you may want to consider alternative methods of pain relief. Some options include over-the-counter pain relievers like acetaminophen (Tylenol), which does not appear to have the same negative effects on fertility as NSAIDs. Additionally, non-pharmacological methods such as heating pads, warm baths, and relaxation techniques like deep breathing and meditation can also help alleviate pain without posing potential risks to fertility.

Talking to Your Healthcare Provider

If you have concerns about Mefenamic acid and fertility, it's essential to discuss them with your healthcare provider. They can provide more information about the potential risks and benefits of this medication, as well as help you weigh your options for pain relief. If you are actively trying to conceive, your healthcare provider can also offer guidance on optimizing your fertility and potential alternative treatments to support a healthy pregnancy.


In conclusion, the potential effects and concerns of Mefenamic acid on fertility are not fully understood, and more research is needed. However, it's essential to be aware of the potential risks and discuss them with your healthcare provider to make informed decisions about your health and fertility.