Getting rid of strep throat requires antibiotics. Unlike a regular sore throat caused by a virus, strep is a bacterial infection that won’t reliably clear on its own and can lead to serious complications if left untreated. The standard course of treatment takes 10 days, and most people start feeling better within 48 hours of their first dose.
How to Tell if It’s Actually Strep
Most sore throats are caused by viruses, not bacteria. Strep throat accounts for up to 30% of sore throats in children and about 15% in adults. The distinction matters because antibiotics only work against the bacterial version.
A few clues suggest your sore throat is viral rather than strep: a cough, runny nose, hoarseness, or pink eye. Strep tends to come on suddenly with a raw, painful throat, fever, and swollen lymph nodes in the neck, often without any cold-like symptoms at all. But symptoms alone aren’t enough to diagnose it. You need a test.
Most clinics use a rapid strep test, which involves swabbing the back of your throat. These tests are about 86% sensitive and 96% specific, meaning they’re very reliable when they come back positive but occasionally miss a true case. If your rapid test is negative but your doctor still suspects strep, they may send a throat culture to a lab, which takes a day or two but catches cases the rapid test misses. This backup step is especially common for children, since untreated strep carries higher risks in younger age groups.
Antibiotic Treatment
Penicillin and amoxicillin are the first-choice antibiotics for strep throat. Both are inexpensive, effective, and well-tolerated. For adults, the typical regimen is a 10-day course taken by mouth. Amoxicillin is often preferred for kids because it tastes better in liquid form and can be taken once daily.
If you’re allergic to penicillin, your doctor has several alternatives. These include certain antibiotics in a related family (as long as your allergy isn’t the severe, immediate type) or options from entirely different antibiotic classes. Some of these alternatives run for 10 days, while one common option is a 5-day course. Your doctor will choose based on the type of allergy you have.
The full 10-day course matters even though you’ll likely feel much better after two or three days. Stopping early lets surviving bacteria rebound, which can lead to a relapse or contribute to antibiotic resistance. If you struggle to finish a full course of pills, a single antibiotic injection given at the clinic is another option that eliminates the need for daily doses.
Pain Relief While You Recover
Antibiotics kill the bacteria, but they don’t do much for the pain in the short term. Over-the-counter pain relievers like ibuprofen (Advil, Motrin) or acetaminophen (Tylenol) help reduce both throat pain and fever. Ibuprofen also cuts inflammation, which can make swallowing easier.
Gargling with warm salt water is a simple, effective way to soothe a raw throat. Mix a quarter teaspoon of table salt into 8 ounces of warm water and gargle several times a day. Other things that help: drinking plenty of fluids, eating soft foods like soup or yogurt, and running a cool-mist humidifier in your bedroom. Cold treats like popsicles can temporarily numb throat pain, especially for kids who are refusing to drink.
When You Stop Being Contagious
You become non-contagious remarkably fast once treatment starts. Within 12 hours of your first antibiotic dose, you’re no longer spreading the bacteria. Schools and daycares typically require children to stay home until that 12-hour window has passed.
Before you start antibiotics (or if you skip them entirely), strep is highly contagious. It spreads through respiratory droplets when you cough, sneeze, or share food and drinks. Washing your hands frequently and avoiding shared utensils are the most effective ways to keep it from moving through your household.
Preventing Reinfection at Home
One commonly overlooked step: replace your toothbrush within 24 hours of starting antibiotics. Bacteria can linger on the bristles and potentially reintroduce the infection. If you use a water flosser, empty and sanitize the reservoir. Disposable flossers used while you were sick should be thrown away. Going forward, store your toothbrush upright in open air rather than inside a closed container, which traps moisture and encourages bacterial growth.
If multiple family members are getting strep repeatedly, the bacteria may be circulating within the household. People who live or sleep in close quarters with someone diagnosed with strep are at higher risk and should be tested if they develop symptoms, even mild ones.
What Happens if You Don’t Treat It
Some people wonder whether they can just ride out strep the way they would a regular sore throat. While the throat infection itself may eventually resolve, skipping treatment opens the door to complications that are far more serious than a few days of soreness.
Rheumatic fever is the most concerning risk. It’s an inflammatory condition that can damage the heart valves, and it develops when the immune system’s response to untreated strep goes haywire. Rheumatic fever is rare in the U.S. today precisely because antibiotic treatment is so routine, but it still occurs, particularly in crowded living conditions where strep spreads easily. Another possible complication is kidney inflammation, which can cause swelling, blood in the urine, and reduced kidney function. Strep can also spread locally, forming an abscess near the tonsils that requires drainage.
People with a history of rheumatic fever are at especially high risk with any new strep infection and should be tested promptly, even if their symptoms seem mild. For everyone else, the calculus is straightforward: a 10-day course of a common antibiotic eliminates these risks almost entirely.