Strep throat requires antibiotics to clear the infection. Unlike a regular sore throat caused by a virus, strep is a bacterial infection that won’t resolve on its own, and leaving it untreated can lead to serious complications. The good news: most people start feeling noticeably better within one to two days of starting their prescription.
Why You Need Antibiotics
Strep throat is caused by group A Streptococcus bacteria, and no amount of rest, fluids, or home remedies will eliminate the infection without antibiotics. The standard treatment is a 10-day course of penicillin or amoxicillin. These remain the first-line choices because the bacteria that cause strep have not developed resistance to them.
If you have a penicillin allergy, your doctor will prescribe an alternative. Common options include cephalosporins (a related class of antibiotic), clindamycin, or macrolide antibiotics like azithromycin. The course length varies slightly depending on the medication, but most alternatives also run about 10 days, with the exception of azithromycin, which is a 5-day course.
One critical point: finish the entire prescription, even after you feel better. Stopping early increases the risk of the infection returning and can contribute to antibiotic resistance.
What Recovery Looks Like
You should notice improvement within the first day or two of starting antibiotics. Fever typically breaks first, followed by a gradual reduction in throat pain and swelling. If you don’t feel any better after 48 hours on antibiotics, contact your doctor. This could mean the medication isn’t working effectively or the diagnosis needs a second look.
Within 12 hours of your first antibiotic dose, you’re generally no longer contagious. That’s the standard threshold used by schools and workplaces for allowing people to return. Before that 12-hour mark, strep spreads easily through respiratory droplets, so avoid sharing cups, utensils, or close face-to-face contact.
Managing Pain While You Heal
Antibiotics kill the bacteria, but they don’t provide instant pain relief. While you wait for them to take full effect, over-the-counter pain relievers like ibuprofen or acetaminophen can significantly reduce throat pain and bring down a fever. For children, use age-appropriate formulations and avoid aspirin.
A few other measures that help:
- Saltwater gargle: Mix about half a teaspoon of salt in a glass of warm water and gargle several times a day. This won’t cure anything, but it can temporarily soothe the rawness in your throat.
- Cold or warm liquids: Warm broth, tea with honey, or cold popsicles can ease discomfort. Choose whatever feels better on your throat.
- Throat lozenges: Fine for older children and adults, though they only provide temporary numbing.
- Humidifier: Dry air irritates an already inflamed throat. Adding moisture to your room can make breathing and swallowing more comfortable.
Rest matters too. Your body is fighting an active infection, and pushing through with normal activities can slow your recovery, even with antibiotics doing the heavy lifting.
What Happens If You Don’t Treat It
Some people wonder whether they can ride out strep throat without a prescription. While the sore throat itself may eventually fade, the bacteria can trigger complications that are far more serious than the original infection.
The most concerning risk is rheumatic fever, which can develop one to five weeks after an untreated strep infection. Rheumatic fever causes inflammation throughout the body, particularly in the heart, joints, and nervous system. If rheumatic fever itself isn’t treated promptly, it can progress to rheumatic heart disease, which damages the valves between the chambers of the heart. Severe cases require heart surgery and can be fatal. People who have had rheumatic fever once are also at higher risk of developing it again with future strep infections, making proper treatment even more important going forward.
Other potential complications include kidney inflammation and peritonsillar abscess, a painful collection of pus near the tonsils that sometimes requires drainage. These complications are uncommon when strep is treated with a full course of antibiotics, but they’re a real risk without treatment.
Preventing Reinfection and Spread
Strep bacteria can linger on surfaces and personal items. If you share a toothbrush holder with other people in your household, the American Dental Association recommends replacing all toothbrushes in that holder to avoid spreading the infection. For your own toothbrush, rinsing it under cold running water after each use and storing it upright and uncovered helps reduce bacterial buildup. Some evidence suggests hydrogen peroxide rinses can further reduce bacteria on bristles, though the research on toothbrush sanitization is limited.
Hand hygiene is your best defense against spreading strep to others or picking it up again. The bacteria travel through respiratory droplets and hand-to-mouth contact, so frequent handwashing, especially after coughing or sneezing, makes a real difference. Replace or wash items that have been in contact with your mouth during the contagious period: drinking glasses, water bottles, and utensils.
Recurring strep infections, particularly four or more episodes in a single year, sometimes indicate that someone is a strep carrier. Carriers harbor the bacteria in their throat without active symptoms but can still test positive on throat swabs. If you find yourself cycling through repeated infections, your doctor may take a different approach to testing and treatment to determine whether you’re dealing with true reinfections or a carrier state with viral illnesses on top.