Getting over strep throat takes about 10 days of antibiotics, but you’ll start feeling noticeably better within two to three days of your first dose. Strep is a bacterial infection, not a viral one, so it requires prescription medication to clear. The good news: once you start treatment, you stop being contagious within just 12 hours.
Why You Need Antibiotics
Strep throat is caused by group A Streptococcus bacteria, and your immune system can’t reliably knock it out on its own. The standard treatment is a 10-day course of penicillin or amoxicillin. These are the first-choice antibiotics because they’re effective, inexpensive, and group A strep hasn’t developed resistance to them. If you’re allergic to penicillin, your doctor will prescribe an alternative.
The most important thing you can do is finish the entire course, even after you feel better. Most people feel significantly improved by day two or three and are tempted to stop. But stopping early lets surviving bacteria regroup, which can lead to a rebound infection or, worse, serious complications.
What Happens If You Don’t Treat It
Untreated strep throat carries real risks beyond a miserable week. Rheumatic fever can develop one to five weeks after the initial infection. It’s an inflammatory condition that can damage heart valves, cause joint pain, and affect the brain and skin. Severe cases lead to rheumatic heart disease, which may require surgery. Untreated strep can also trigger kidney inflammation, where your immune system’s response to the bacteria accidentally attacks your own kidneys.
These complications are uncommon in countries where antibiotics are readily available, but they still happen, particularly when people assume a sore throat will resolve on its own and never get tested.
How Doctors Confirm It’s Strep
Not every sore throat is strep. Doctors use a scoring system based on five factors: your age, whether you have a fever, swollen lymph nodes in your neck, white patches on your tonsils, and whether you have a cough. A cough actually makes strep less likely, since coughing points more toward a viral infection. If you score high on these criteria, a rapid strep test or throat culture confirms the diagnosis. If your score is low, testing and antibiotics usually aren’t needed because the odds of a bacterial cause are small.
Managing Pain While You Recover
Antibiotics kill the bacteria, but they don’t do much for the pain in the first day or two. Over-the-counter pain relievers are your best tool here. Ibuprofen (Advil, Motrin) reduces both pain and inflammation, while acetaminophen (Tylenol) handles pain and fever. You can alternate between the two if one alone isn’t enough.
One caution: don’t give aspirin to children or teenagers with strep. Aspirin in kids recovering from infections has been linked to Reye’s syndrome, a rare but dangerous condition that affects the liver and brain.
Gargling with warm salt water also provides temporary relief. Mix half a teaspoon of table salt into one cup (8 ounces) of warm water and gargle for 15 to 30 seconds. This won’t cure anything, but it reduces swelling in throat tissue and can make swallowing less painful. You can repeat this several times a day.
What to Eat, Drink, and Do
Soft foods are your friend for the first few days. Think broth, mashed potatoes, yogurt, smoothies, scrambled eggs. Anything with sharp edges or acidic flavors (chips, citrus juice, tomato sauce) will irritate your throat further. Cold foods like popsicles or ice cream can feel soothing and help with hydration at the same time.
Staying hydrated matters more than usual. Fever and difficulty swallowing both contribute to dehydration, which makes throat pain worse. Water, herbal tea, and warm broth are all good choices. Avoid alcohol and caffeine, which pull water out of your system.
Rest is the other non-negotiable. Your body is fighting an active bacterial infection, and pushing through a normal schedule slows recovery. Sleep as much as your body asks for, especially in the first two to three days.
When You Can Go Back to Normal
You stop being contagious about 12 hours after taking your first antibiotic dose. Schools and workplaces generally follow this same guideline: you can return after 12 hours on antibiotics, as long as your fever has broken and you feel well enough to function. That said, many people still feel run down for a few days even after they’re no longer contagious, so take it easy if you can.
While you’re still in that contagious window, avoid sharing cups, utensils, or food. Replace your toothbrush once you’ve been on antibiotics for a day or two, since bacteria can linger on the bristles. Wash your hands frequently to avoid passing the infection to anyone in your household.
If You’re Not Getting Better
Most people see steady improvement within 48 to 72 hours of starting antibiotics. If your fever returns after initially breaking, your throat pain is getting worse rather than better after three days of treatment, or you develop new symptoms like a rash, joint pain, or difficulty breathing, those are signs that something else may be going on. Possible explanations include a peritonsillar abscess (a pocket of pus near the tonsils), an allergic reaction to the antibiotic, or a co-infection. In those cases, a follow-up visit can catch the problem before it escalates.