Can you use a menstrual cup with an IUD?

IUDs (Intrauterine Devices) are a popular, long-term birth control option and just like menstrual cups, they’re loved for their convenience, effectiveness, and sustainability.

But can these two internal devices coexist peacefully? The short answer: YES, with a few smart precautions.

IUD + menstrual cup = power duo

Using a menstrual cup with an IUD is generally safe. But because both sit inside your body, it’s important to understand how they interact. Here’s what you need to know to keep your contraception and period care working in harmony:

Check your string length

Your IUD has a small string that hangs down through the cervix. When using a menstrual cup, this string should ideally sit above or inside the cup, not dangling into it. After inserting your cup, run a clean finger around the rim to check if the string is exposed. If it feels long or uncomfortable, ask your doctor to trim it safely.

Suction matters

Menstrual cups create a gentle suction to stay leak-free. Lunette cups are designed to be soft and smooth, minimizing any risk of tugging on your IUD string. But here’s the golden rule: never yank your cup out. Always break the seal first by pinching the base of the cup before removal. This releases the suction and protects your IUD placement.

What does the research say?

A recent study published in Contraception and Reproductive Medicine found that menstrual cup use may be associated with a higher risk of IUD displacement, especially if not used correctly. However, the overall risk remains low and can be mitigated with proper technique and regular check-ins with your healthcare provider.

Timing is everything

Just had your IUD inserted? Wait at least 2–4 weeks before using a menstrual cup. This gives your body time to adjust and reduces the risk of early expulsion.

Always consult your doctor before combining these products especially if you’re new to either.

Final tips for safe use

Choose a medical-grade silicone cup like Lunette for maximum comfort and safety.
Monitor your IUD strings regularly.
Avoid forceful movements during cup removal.
Break the seal every time you remove your cup.
Schedule regular check-ups with your gynecologist.