U.S. doctors online nowAsk doctors free
A 38-year-old member asked:

how long does aspirin last ?

1 doctor answer2 doctors weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Aspirin is dosed: Variably. It may be as low at 50 mg per day for some conditions and in other situations it may be dosed up to 6.5 g/ day (rheumatic fever). Dosing every 4 hours may be used for a number of conditions with max of 4 gm in divided dose per day.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
$30 per visit with
membership

Similar questions

CA
A 38-year-old member asked:

Does taking aspirin make my periods last longer?

2 doctor answers4 doctors weighed in
Dr. Edward Neilsen
Family Medicine 19 years experience
It should not: Although Aspirin can thin the blood, it should not increase the duration of a period. In fact, anti-inflammatory medicines like aspirin, ibuprofen, or Aleve (naproxen) are commonly used to decrease bleeding, as they decrease the inflammatory respons in the uterus, and cause the blood vessels to close off some.
A 35-year-old member asked:

For how long does aspirin stay in your system?

4 doctor answers7 doctors weighed in
Dr. Pedro Hernandez
Geriatrics 40 years experience
7 days: One Aspirin may have some effect in the body for up to 7 days but at least for one day. In pts with higher risk for bleeding or gastritis or peptic ulcers may be prescribed less often than daily if clinically necessary.
India
A 33-year-old member asked:

How long does it it take for the effects of aspirin to kick in?

2 doctor answers9 doctors weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
5-12 minutes: A study published in a cardiology (heart) journal found that Aspirin started working (preventing platelets from clumping) after 5 minutes for chewable tablets, and after 12 minutes for tablets swallowed whole. If an adult takes Aspirin for pain or fever, probably more time needs to pass before he notices less pain or lower fever, perhaps 30 minutes.
A 23-year-old member asked:

Doctors have told my husband from birth that he is deathly allergic to asprin, how will emt know not to give?

3 doctor answers16 doctors weighed in
Dr. Jon Ahrendsen
Family Medicine 39 years experience
Wear Med Alert Tag: He should get a med alert bracelet or necklace and wear it at all times. Emt's are trained to check for these items.
Saudi Arabia
A 20-year-old female asked:

What are the side effects of an expired aspirin and how long they will last?

1 doctor answer1 doctor weighed in
Dr. Tanya Russo
Pediatrics 25 years experience
Same as fresh: the side effects of expired aspirin should be the same as fresh aspirin, but probably a little less so. Most medications lose potency (strength) when they expire, but some become toxic. It's always best to discard any expired medication and replace it with a new supply.

Related questions

A 38-year-old member asked:
1 doctor answer8 doctors weighed in
A 35-year-old member asked:
1 doctor answer3 doctors weighed in
A 38-year-old member asked:
1 doctor answer2 doctors weighed in
A 43-year-old member asked:
1 doctor answer2 doctors weighed in

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
$30 per visit with
membership
Last updated Apr 3, 2018

People also asked

Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
$30 per visit with
membership

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.