Side-by-side comparison
Combined pill vs mini pill
Both are about 93% effective with typical use. The combined pill contains estrogen, which some people cannot take (for example with migraine with aura or if they smoke and are over 35). The mini pill has no estrogen and suits more people, but some types have a stricter daily timing window.
By the AltFTool health editorial teamLast reviewed Checked against WHO, CDC and NHS guidance
Key differences
| Feature | Combined pill | Mini pill |
|---|---|---|
| Typical-use effectiveness | 93% | 93% |
| Perfect-use effectiveness | Over 99% | Over 99% |
| Hormones | Estrogen + progestogen | Progestogen |
| How long it lasts | One pill a day; protection depends on taking it consistently | One pill every day with no break; protection depends on taking it on time |
| Protects against STIs | No | No |
| Needs a clinician to start | Yes | No |
| Daily or every-time action | Yes | Yes |
| You can stop it yourself | Yes | Yes |
| Fertility after stopping | Quickly after stopping | Quickly after stopping |
| While breastfeeding | Not in the first 6 weeks after birth (ask a clinician) | Yes |
| Effect on periods | Bleeding is usually lighter, more regular, and less painful, and some regimens let you skip bleeds. | Bleeding may become irregular, lighter, more frequent, or stop; it is hard to predict. |
Read each guide
Combined pill
People who can remember a daily pill and want control over their periods, provided they do not have risk factors that rule out estrogen.
Progestogen-only pill
People who want a daily pill but cannot or prefer not to take estrogen, including those who are breastfeeding, smoke, or get migraines with aura.
FAQ
Which is more effective, combined pill or mini pill?
Both are about 93% effective with typical use. The combined pill contains estrogen, which some people cannot take (for example with migraine with aura or if they smoke and are over 35). The mini pill has no estrogen and suits more people, but some types have a stricter daily timing window.
Does the combined pill or mini pill protect against STIs?
Neither does. Use condoms as well if you need protection from sexually transmitted infections.
Can I switch from the combined pill to the mini pill?
Usually yes. A clinician or pharmacist can tell you when to start the new method and whether you need extra protection (such as condoms) for a few days while switching.
More comparisons
Sources
Reviewed 1 November 2026. We link to the guidance itself so you can check it.