SSRI Antidepressants and Unscheduled Bleeding: What You Need to Know - Obstetrics and Gynecology

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SSRIs and Non-Cyclical Bleeding


Hello Doctor, due to postpartum depression, I was diagnosed by a psychiatrist and prescribed Fluvoxamine Maleate.
I have been taking 100 mg daily for 2 weeks now.
My last menstrual period started on September 16, and I experienced another one on October 7 (bright red and moderate flow, which is still ongoing today).
I have not had any issues with intermenstrual bleeding before, and I had a Pap smear done 3 months ago that was normal.
Could the abnormal bleeding be related to the medication? Thank you, Doctor.

Ivy, 40~49 year old female. Ask Date: 2020/10/08

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, please monitor the situation.
If there is still bleeding, it is recommended to see a gynecologist.
Wishing you good health.

Reply Date: 2020/10/08

More Info


Hello! Thank you for your question regarding the potential relationship between SSRI antidepressants, specifically Fluvoxamine Maleate, and unscheduled bleeding. It's understandable to be concerned about any changes in your body, especially after starting a new medication.

Selective serotonin reuptake inhibitors (SSRIs) like Fluvoxamine are primarily used to treat depression and anxiety disorders. While they are generally well-tolerated, they can have side effects, and one of the concerns that has emerged in recent years is their potential association with bleeding complications, including unscheduled menstrual bleeding.

Research has shown that SSRIs can affect platelet function and serotonin levels in the body, which may contribute to an increased risk of bleeding. Serotonin is involved in the regulation of platelet aggregation, and SSRIs can inhibit the reuptake of serotonin, potentially leading to altered platelet function. This is particularly relevant in individuals who may already have a predisposition to bleeding or are taking other medications that affect coagulation.

In your case, experiencing unscheduled bleeding after starting Fluvoxamine could potentially be related to the medication. However, it is essential to consider other factors that could contribute to this change. Hormonal fluctuations, stress, changes in lifestyle, or even other medications can also impact menstrual cycles. Since you mentioned that you had a normal Pap smear three months ago, it is less likely that there is an underlying gynecological issue, but it is still important to monitor your symptoms.

Given that you have only been on the medication for two weeks, it may be too early to draw definitive conclusions about the relationship between the SSRI and your bleeding. Some patients may experience transient changes in their menstrual cycles when starting a new medication, which can stabilize over time. However, if the unscheduled bleeding persists or worsens, it is crucial to consult your healthcare provider for further evaluation. They may want to rule out other potential causes, such as hormonal imbalances or other medical conditions.

Additionally, if you are taking any other medications or supplements, it is essential to discuss these with your doctor, as they may interact with Fluvoxamine and contribute to bleeding risks. Your healthcare provider can also provide guidance on whether to continue the medication or consider alternative treatments based on your symptoms and overall health.

In summary, while there is a potential link between SSRIs and unscheduled bleeding, it is essential to consider the broader context of your health and any other factors that may be at play. Keep track of your symptoms, and do not hesitate to reach out to your healthcare provider for personalized advice and support. Your well-being is the top priority, and they can help you navigate any concerns you may have regarding your treatment.

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