Evidence-based

Menstrual Flow

•Last Updated: October 13, 2024

Menstrual flow (also known as having a period) is the excretion of blood and tissue from the uterine lining through the vagina in the first phase of the menstrual cycle. Menstrual flow lasts for approximately 2–6 days, with a total volume of approximately 30–60 milliliters.

Last Updated:October 13, 2024

278 participants in 1 trial

Examine Evidence Grades

C1 outcome

Examine Database: Menstrual Flow

Intervention	Grade	Evidence	Effect
Vitamin E	C	Participants: 278	Small Decrease
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Vitamin E

Small Decrease

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Intervention	Grade	Effect	Detail
Vitamin E	C
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Research FeedRead all studies

Can an iron supplement affect menstrual bleeding or hemoglobin?

In this randomized controlled trial, supplementation with iron during menstruation did not affect the amount of menstrual bleeding or hemoglobin levels in women without anemia.

Examine Database References

Vitamin E - Ziaei S, Zakeri M, Kazemnejad AA randomised controlled trial of vitamin E in the treatment of primary dysmenorrhoeaBJOG.(2005 Apr)