Strep throat is treated with antibiotics, most commonly penicillin or amoxicillin, taken for 10 days. While antibiotics kill the bacteria causing the infection, over-the-counter pain relievers like ibuprofen and acetaminophen help manage the sore throat and fever while you recover. You can’t treat strep throat with home remedies alone; the antibiotics are necessary to clear the infection and prevent complications.
Antibiotics: The Core Treatment
Penicillin and amoxicillin are the first-choice antibiotics for strep throat. They’ve been the standard for decades because group A strep bacteria have never developed resistance to them. Most people take a 10-day course, though your provider may prescribe a different duration depending on the specific antibiotic. Amoxicillin is often preferred for children because it comes in a chewable tablet and liquid form that taste better than penicillin.
You’ll start feeling better within a day or two of your first dose, but it’s important to finish the entire course. Stopping early, even when symptoms disappear, can allow the bacteria to survive and bounce back. Within 12 hours of starting antibiotics, you’re typically no longer contagious, which is the threshold most schools and workplaces use for return.
If You’re Allergic to Penicillin
Several alternative antibiotics work well for people who can’t take penicillin. The CDC recommends options in two main categories. Cephalosporin-type antibiotics (like cephalexin or cefadroxil) are effective and taken for 10 days, but they’re closely related to penicillin. If you’ve ever had a severe, immediate allergic reaction to penicillin (hives, swelling, difficulty breathing), these aren’t safe for you either.
For people with serious penicillin allergies, macrolide antibiotics like azithromycin or clarithromycin are the go-to alternatives. Azithromycin has a shorter course of just 5 days, which can make it easier to complete. Clindamycin, taken three times daily for 10 days, is another option. Your provider will choose based on your allergy history and what’s most likely to work in your area, since some strep bacteria have developed resistance to macrolides in certain regions.
Pain Relief While You Recover
Antibiotics treat the infection, but they don’t do much for the pain in the first 24 to 48 hours. That’s where over-the-counter medications come in. Ibuprofen (Advil, Motrin) and acetaminophen (Tylenol) both reduce throat pain and bring down fever. Ibuprofen also reduces inflammation, which can help with the swelling that makes swallowing painful. You can alternate between the two if one alone isn’t enough, since they work through different mechanisms.
A few other things help during recovery:
- Fluids: Warm broth, water, and herbal tea keep you hydrated and soothe the throat. Cold liquids and popsicles can also numb pain temporarily.
- Soft foods: Soups, yogurt, mashed potatoes, and smoothies are easier to swallow than rough or acidic foods.
- Rest: Your body fights the infection faster when you’re not pushing through a normal schedule. This also limits how many people you expose before the antibiotics kick in.
- Salt water gargles: A half teaspoon of salt in a glass of warm water can temporarily ease throat soreness, though this works better as a comfort measure than a treatment.
Avoid giving aspirin to children or teenagers with strep throat, as it’s linked to a rare but serious condition called Reye’s syndrome.
Why Antibiotics Matter Beyond Symptom Relief
Strep throat will often resolve on its own within a week, which leads some people to wonder whether antibiotics are truly necessary. They are. Untreated strep can trigger rheumatic fever, an inflammatory condition that can damage the heart valves. Rheumatic fever typically develops 2 to 4 weeks after a strep infection that wasn’t properly treated. Once strep is treated promptly with antibiotics, the chance of developing rheumatic fever drops to near zero.
Untreated strep can also lead to a kidney condition called post-streptococcal glomerulonephritis, peritonsillar abscesses (pockets of pus near the tonsils), and the spread of infection to the blood or other tissues. These complications are uncommon, but they’re largely preventable with a straightforward course of antibiotics.
Getting the Right Diagnosis First
Before taking anything for strep, you need a confirmed diagnosis. Strep throat shares symptoms with viral sore throats, which antibiotics can’t treat. A rapid strep test takes about 5 to 10 minutes in a clinic and catches most cases. If it comes back negative but your provider still suspects strep, a throat culture (which takes 24 to 48 hours) can confirm. Current guidelines from the Infectious Diseases Society of America recommend using clinical scoring systems to determine who actually needs testing, since most sore throats in adults are viral.
Red flags that point more toward strep than a virus include sudden onset of severe throat pain, fever above 101°F (38.3°C), swollen and tender lymph nodes in the front of the neck, white patches on the tonsils, and the absence of cough or runny nose. If you have a cough, congestion, or hoarseness, a virus is far more likely, and antibiotics won’t help.