If I am allergic to penicillin, is it safe to use amoxicillin?
Medically reviewed by Drugs.com. Last updated on Oct 16, 2023.
Would it be safe use amoxicillin to treat an infected hole in a tooth that I've had for a few years, and has gradually got worse to the point of no sleep!
No, you should not take amoxicillin if you are allergic to penicillin. Amoxicillin belongs to the Penicillin class of antibiotics and must be avoided.
You need to see your dentist and/or doctor with an infected tooth.
Read next
What are the best antibiotics for a tooth infection?
There are several antibiotics that kill the common mouth bacteria that cause tooth infections. The best (first-line) antibiotics for tooth infection include: Amoxicillin, Penicillin, Cephalexin, Clindamycin, Azithromycin. Amoxicillin is often the first choice because it is widely effective and has the fewest gastrointestinal side effects. Continue reading
Can you drink alcohol with amoxicillin?
Yes, you can drink alcohol while taking the antibiotic amoxicillin. The alcohol will not stop amoxicillin from working. However, many health professionals will recommend you avoid alcohol to give your body the best chance possible to fight the infection. Moderation is key. Continue reading
Does amoxicillin expire? Is it safe to take after expiration?
Amoxicillin capsules and tablets have an expiry of around 2 years and, provided they are stored as recommended and in the original packaging, there will be a small lee way of safety if used beyond expiry. Amoxicillin suspension is different and has a very short shelf life of about 7-10 days once it is prepared. Continue reading
Related medical questions
- Amoxicillin rash: When should I be concerned?
- Is amoxicillin safe for dogs?
- What is the best antibiotic to treat strep throat?
- Does amoxicillin help with tooth infection and pain?
- What's the difference between amoxicillin and penicillin?
- What are the best antibiotics for pneumonia?
- What medications can affect your taste or smell?
- Amoxicillin for ear infection: Take how many times a day?
- What's the normal daily dose of amoxicillin 500mg for chest infections?
- Can you safely consume alcohol while taking amoxicillin?
- If people are allergic to amoxicillin can they take cephalexin?
- Are there any foods I should avoid while taking amoxicillin?
- How often should I take amoxicillin for a sinus infection?
- Can amoxicillin be used to treat a bacterial vaginitis infection?
- What is the recommended dosage of amoxicillin for a 14 year old child?
- Amoxicillin - does it have sulfa or penicillin in it?
- Can penicillin treat chlamydia?
- If I can not take penicillin, is amoxicillin the same or do I need to avoid it?
- Can you take antibiotics while pregnant?
- How do language barriers affect safe medication use?
Drug information
- Amoxicillin Information for Consumers
- Amoxicillin prescribing info & package insert (for Health Professionals)
- Side Effects of Amoxicillin (detailed)
Related support groups
- Penicillin (104 questions, 111 members)
- Amoxicillin (194 questions, 304 members)
- Infections (603 questions, 986 members)
- Allergic Reactions (219 questions, 463 members)