Menstrual cup: definition and meaning
A menstrual cup is a small, flexible, bell-shaped cup, usually made of medical-grade silicone, that is folded and inserted into the vagina to collect period blood rather than absorb it. It can usually be worn for up to 12 hours, then emptied, rinsed and reinserted. One cup can last several years.
How a menstrual cup works
You fold the cup, insert it low in the vagina, and let it open. It forms a gentle seal against the vaginal walls, so blood collects inside instead of leaking. To remove it, you pinch the base to break the seal, pull it out, empty it into the toilet, rinse and reinsert. Between periods it is boiled or washed as the maker recommends.
Cup vs tampon at a glance
| Menstrual cup | Tampon | |
|---|---|---|
| Wear time | Up to 12 hours | Up to 8 hours |
| Reusable | Yes, often for years | No |
| How it works | Collects blood | Absorbs blood |
| Learning curve | A few cycles for many | Usually quick |
| Toxic shock risk | Very rare, but reported | Rare, higher with high absorbency |
A large review in The Lancet Public Health found cups leak about as often as pads and tampons and are safe for most people. For a full comparison see menstrual cup vs tampon, and for other options see menstrual disc and period underwear.
Tips and safety
- Wash your hands before inserting or removing it.
- Choose the size the maker suggests for your age, flow and whether you've given birth.
- If you have an IUD, break the seal fully before removing, as cups have been linked to IUD displacement.
- Empty it at least every 12 hours, and more often on heavy days.
Remove the cup and get urgent care if you develop a sudden high fever, a sunburn-like rash, vomiting or dizziness during your period. These can be signs of toxic shock syndrome.
Frequently asked questions
Can a menstrual cup get lost inside you?
No. The cervix closes off the top of the vagina, so a cup can sit high but can't go anywhere. Relax and bear down gently to bring it lower.
Can you use a menstrual cup if you're a virgin?
Yes. Using a cup doesn't change virginity, which is not a medical state. Smaller sizes are often easier at first.
Does a menstrual cup help track flow?
Yes, many cups have measurement lines, so you can see how much you bleed. That's useful if you're worried your periods are heavy.
Sources
- van Eijk AM et al. Menstrual cup use, leakage, acceptability, safety, and availability. Lancet Public Health (2019)
- FDA: The Facts on Tampons and How to Use Them Safely
- NHS: Toxic shock syndrome
This page is for information only and isn鈥檛 medical advice. If something worries you, please talk to a doctor.
Keep reading
Menstrual cup vs tampon: which is better for you?Menstrual cup vs tampon: how they compare on leaks, wear time, TSS risk, cost and comfort, based on research, so you can pick what suits your period.What is a menstrual disc?A menstrual disc is a flat, flexible period product that sits in the vaginal fornix to collect blood. How it differs from a cup, and how to use one.Tampon: definition and meaningWhat a tampon is, how absorbency levels work, how often to change one, and how to lower the rare risk of toxic shock syndrome (TSS). Plain answers.
Toxic shock syndrome (TSS): definition and meaningToxic shock syndrome is a rare, serious reaction to bacterial toxins, sometimes linked to tampons. Symptoms, how to lower your risk, and when to get help.Period underwear: definition and meaningPeriod underwear (period pants) are washable briefs with an absorbent layer that holds period blood. How they work, how long to wear them, and care tips.