For strep throat, doctors prescribe antibiotics, most commonly amoxicillin or penicillin V, taken for 10 days. These are the go-to treatments because they’re effective, inexpensive, and the bacteria that cause strep throat haven’t developed resistance to them. Beyond the antibiotic itself, you may also receive recommendations for pain relief to get you through the first couple of days, which tend to be the worst.
The Standard Antibiotic Prescription
Amoxicillin is the most frequently prescribed antibiotic for strep throat, especially for children, because it comes in a liquid form and tastes better than penicillin. Penicillin V (the pill form of penicillin) works just as well and is equally common for adults. Both require a full 10-day course, even though you’ll likely feel significantly better within two or three days.
That 10-day timeline matters. Stopping early because you feel fine is one of the most common mistakes people make. The bacteria can survive in your throat at low levels even after symptoms fade, and cutting the course short increases the chance of the infection coming back or, more importantly, of complications developing. Untreated or undertreated strep can lead to rheumatic fever, an inflammatory condition that affects the heart, joints, and nervous system. Rheumatic fever typically develops one to five weeks after the initial strep infection.
If You’re Allergic to Penicillin
Penicillin allergies are common enough that there’s a well-established set of alternatives. Your doctor will choose from a few options depending on the type of reaction you’ve had in the past.
If your allergy is mild (a rash, for example, rather than throat swelling or difficulty breathing), you may be prescribed cephalexin or cefadroxil. These are in a related antibiotic family but are generally safe for people whose penicillin reactions weren’t severe. Both are taken for 10 days.
If your allergy involved a more serious reaction like hives, swelling, or anaphylaxis, your doctor will avoid that entire antibiotic family and instead prescribe one of these:
- Azithromycin: A 5-day course, which is the shortest option available. You take a larger dose on the first day and a smaller dose for the next four days.
- Clarithromycin: Taken twice daily for 10 days.
- Clindamycin: Taken three times daily for 10 days.
Azithromycin’s shorter course makes it appealing, but it’s reserved for people who truly can’t take penicillin-type drugs. The CDC recommends penicillin or amoxicillin as the first choice for everyone else because they have the longest track record of effectiveness against strep bacteria specifically.
Pain Relief Alongside Antibiotics
Antibiotics kill the bacteria, but they don’t directly reduce pain. The first 24 to 48 hours of strep throat can be genuinely miserable, so pain management is a real part of treatment. Over-the-counter options like ibuprofen and acetaminophen are the standard recommendations. Ibuprofen has the added benefit of reducing inflammation in your throat.
In cases of severe pain or swelling, some doctors prescribe a single dose of an oral corticosteroid. Research published in American Family Physician found that a single low dose brought pain relief about 4.8 hours faster than going without it (7.4 hours versus 12.3 hours to onset of relief). More than twice as many patients reported their pain had completely resolved at the 24-hour mark. This isn’t routine for every strep case, but if you’re in significant pain and struggling to swallow, it’s worth asking about.
Home Remedies That Actually Help
Natural remedies can’t replace antibiotics for strep. No herb, supplement, or gargle will kill the bacteria or prevent complications like rheumatic fever. But several options can make the experience more bearable while you wait for the antibiotics to take effect.
Gargling with warm salt water (about half a teaspoon of salt in a glass of warm water) helps soothe throat pain and reduce swelling. Honey has some evidence behind it as well. Research reviews from 2021 found that honey was roughly as effective as over-the-counter cough suppressants and antihistamines at treating sore throat symptoms. Throat lozenges, warm broth, and cold foods like popsicles can also provide temporary relief. Staying hydrated is particularly important since pain while swallowing often leads people to drink less than they should.
How Quickly You’ll Feel Better
Most people notice improvement within 24 to 48 hours of starting antibiotics. Fever usually breaks first, followed by a gradual reduction in throat pain over the next day or two. You become non-contagious within 12 hours of your first antibiotic dose, which is the standard threshold schools and workplaces use for returning.
If you’re not feeling any better after 48 hours on antibiotics, contact your doctor. This could mean the infection isn’t responding to the particular antibiotic you were given, or it could mean the diagnosis needs a second look. Viral infections like mono can mimic strep throat, and antibiotics won’t help with those.
How Strep Throat Gets Diagnosed
Before you get a prescription, your doctor needs to confirm that bacteria are actually causing your sore throat. Most sore throats are viral, and antibiotics won’t help those. The standard approach is a rapid strep test, which involves swabbing the back of your throat and getting results in about 10 to 15 minutes.
Rapid tests are highly specific, meaning a positive result is almost certainly accurate (about 96% specificity). A negative result is less reliable, especially in children, so doctors sometimes follow up with a throat culture. Cultures take 24 to 48 hours to come back but catch cases the rapid test misses. If your rapid test is negative but your doctor suspects strep based on your symptoms, they may start you on antibiotics while waiting for the culture results, or they may ask you to wait.
What Happens if Strep Comes Back
Some people get strep throat repeatedly, sometimes within weeks of finishing a course of antibiotics. When strep returns shortly after treatment, your doctor may switch to a different antibiotic class for the second round. The bacteria themselves aren’t resistant to penicillin, but other bacteria in your throat can sometimes interfere with penicillin’s effectiveness, which is one reason a different drug may work better on a repeat infection.
For people who get strep multiple times a year over several years, tonsil removal becomes a conversation worth having. This is more common in children, but adults with genuinely recurrent strep (typically defined as seven or more episodes in a single year, or five per year over two years) may benefit as well.