How long does Advil usually take to relieve a headache?
For many people, Advil (ibuprofen) starts reducing headache symptoms within about 30 minutes to an hour after taking it, with more noticeable relief as the dose takes effect.
How long will Advil keep working once it starts?
Headache relief from a single Advil dose commonly lasts a few hours, often around 4 to 6 hours, depending on the cause of the headache and how your body responds.
When should you take another dose?
If symptoms are not improving, the next dose should follow the label instructions for spacing between doses. Taking extra or more frequent doses than directed increases the risk of side effects without improving safety or effectiveness.
What if the headache doesn’t improve?
If a headache doesn’t ease after the first dose or keeps coming back, it may be due to a trigger or condition that needs different treatment. Also consider getting medical advice urgently if you have warning signs such as sudden “worst ever” headache, weakness/numbness, confusion, fainting, fever with stiff neck, head injury, or vision changes.
When is it safer to avoid Advil?
Avoid using Advil unless you’re able to take NSAIDs safely if you have a history of stomach ulcers or bleeding, significant kidney disease, or NSAID allergy, or if you’re taking blood thinners. If any of these apply, check with a clinician or pharmacist for safer options.