Do you ovulate with Zelleta?

The progestogen only pill Zelleta is made from the hormone desogestrel 75mcg.

It works by stopping ovulation for most people, thickening the mucus in the cervix (creating a ‘mucus plug’) which prevents sperm from entering the uterus, and thins the lining of the uterus which would stop a fertilised egg from attaching.

For a small number of people with uteruses (about 4 in 10) they may still ovulate on the progestogen only pill. They will still be protected from pregnancy.

See also: Does the mini pill stop periods?

Last updated at: 11 January 2023