| Drug and dose (mg) | NNT for headache relief at 2 h |
| Naproxen 500 mg vs placebo | 6.2 |
| Sumatriptan 50 mg vs placebo | 4.0 |
| Sumatriptan 100 mg vs placebo | 3.5 |
| Sumatriptan 50‐85 mg plus naproxen 500 mg vs placebo | 3.2 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.