Question 1

How long does Marvelon take to become effective?

Accepted Answer

If started on the first day of your period, Marvelon provides immediate protection. If started on day 2‑5, use additional contraception (e.g., condoms) for the first 7 days.

Question 2

Can Marvelon cause weight gain?

Accepted Answer

Weight gain is reported uncommonly (up to 1 in 10). It is usually mild and often due to fluid retention rather than fat accumulation.

Question 3

What should I do if I miss a Marvelon pill?

Accepted Answer

If you are less than 12 hours late, take it immediately and continue normally. If more than 12 hours late, follow the PIL instructions: you may need emergency contraception and extra protection for 7 days.

Question 4

Does Marvelon interact with antibiotics?

Accepted Answer

Most antibiotics (except rifampicin/rifabutin) do not affect Marvelon. However, if you experience vomiting or severe diarrhoea while on antibiotics, follow missed‑pill advice.

Question 5

How does Marvelon affect breast cancer risk?

Accepted Answer

Current users have a slightly increased relative risk, which returns to baseline within 10 years of stopping. The absolute risk remains small, especially in younger women.