Excessive Bleeding After Drinking Four Substance Soup Post-Menstruation? - Obstetrics and Gynecology

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Experiencing prolonged bleeding after menstruation while consuming Si Wu Tang (Four Substance Decoction)?


Hello Doctor, I would like to ask, after my menstrual period ended, I drank Si Wu Tang three days later, and on that same day, I experienced bleeding.
It has been four days of bleeding now; the first day was dark red, and in the following days, it turned into a light pink with some blood streaks.
Should I see a doctor? Is the bleeding caused by drinking Si Wu Tang? Thank you for your response.

Ting, 30~39 year old female. Ask Date: 2020/08/10

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, if there is still bleeding, it is recommended to see a gynecologist.
Wishing you good health.

Reply Date: 2020/08/10

More Info


Excessive bleeding after consuming a traditional herbal remedy like Si Wu Tang (四物湯) can be concerning, especially if it occurs shortly after menstruation. Si Wu Tang is a well-known Chinese herbal formula traditionally used to nourish the blood and regulate menstruation. It typically contains four main ingredients: Angelica sinensis (Dong Quai), Rehmannia glutinosa, Paeonia lactiflora (Peony), and Ligusticum chuanxiong. While it is generally considered beneficial for women’s health, particularly for those with blood deficiency or irregular menstrual cycles, individual responses can vary significantly.

In your case, experiencing bleeding for four days after consuming Si Wu Tang raises several important considerations. First, it is essential to determine whether this bleeding is indeed related to the consumption of the herbal remedy or if it is coincidental. The fact that the bleeding started three days post-menstruation suggests that it may not be a typical menstrual cycle but rather an abnormal uterine bleeding episode.
There are several potential reasons for this bleeding:
1. Hormonal Fluctuations: After menstruation, hormonal levels can fluctuate, which might lead to spotting or breakthrough bleeding. This is particularly common in women who may have irregular cycles or hormonal imbalances.

2. Herbal Effects: While Si Wu Tang is used to nourish the blood, it can also stimulate uterine contractions in some individuals, potentially leading to bleeding. If your body is particularly sensitive to these herbs, it might react with unexpected bleeding.

3. Underlying Conditions: Conditions such as uterine fibroids, polyps, or endometriosis can cause abnormal bleeding. If you have a history of such conditions, it is crucial to consider them as potential causes.

4. Infection or Other Medical Issues: Sometimes, infections or other medical issues can lead to abnormal bleeding. If there are accompanying symptoms such as pain, fever, or unusual discharge, these could indicate an infection that requires medical attention.

Given that you have experienced bleeding for four days, it is advisable to consult a healthcare professional. They can perform a thorough evaluation, which may include a physical examination, blood tests, or imaging studies, to determine the cause of the bleeding. It is particularly important to seek medical advice if you experience any of the following:
- Heavy bleeding that soaks through pads or tampons in an hour.

- Severe abdominal pain or cramping.

- Dizziness or fainting, which could indicate significant blood loss.

- Any other concerning symptoms that may arise.

In summary, while Si Wu Tang is generally safe for many women, individual reactions can vary, and it is crucial to monitor your body’s responses. The bleeding you are experiencing may not be directly caused by the herbal remedy, but it is essential to rule out any underlying issues. Consulting with a healthcare provider will help ensure that you receive appropriate care and guidance tailored to your specific situation.

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