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 their first antibiotic dose, and you stop being contagious within just 12 hours of starting treatment.
Antibiotics Are the Only Cure
Amoxicillin and penicillin are the first-choice antibiotics for strep throat. Both are inexpensive, widely available, and highly effective against the group A streptococcus bacteria causing the infection. Your doctor will typically prescribe a 10-day course, and it’s important to finish every dose even after you feel better. Stopping early can allow surviving bacteria to bounce back and potentially develop resistance.
If you’re allergic to penicillin, there are several alternatives. These include cephalexin, azithromycin, and clindamycin, among others. Azithromycin is taken for just five days rather than ten. Your doctor will choose the best option based on the type and severity of your allergy.
A single antibiotic injection is also an option for people who have trouble swallowing pills or are unlikely to complete a full oral course. One shot handles the entire treatment.
Managing Pain While You Recover
Antibiotics kill the bacteria, but they don’t instantly eliminate the pain. Over-the-counter pain relievers like ibuprofen and acetaminophen are your best tools for managing throat pain and reducing fever during the first couple of days. Ibuprofen also helps with inflammation, which can make swallowing more comfortable faster. Avoid aspirin for children and teenagers due to the risk of Reye’s syndrome.
A few simple home strategies can also help:
- Salt water gargle: Mix half a teaspoon of salt into one cup of warm water and gargle for 15 to 30 seconds. This draws fluid out of swollen tissue in the throat, temporarily reducing pain. Repeat several times a day as needed.
- Cold or warm liquids: Whichever feels better. Warm broth, tea with honey, and ice pops can all soothe irritation.
- Throat lozenges or spray: Over-the-counter numbing sprays and lozenges provide short-term relief, especially before meals.
- Humidity: Dry air irritates a raw throat. A cool-mist humidifier in your bedroom can help while you sleep.
None of these remedies replace antibiotics. They simply make the wait more bearable while the medication does its job.
When You Can Go Back to School or Work
You become non-contagious within 12 hours of taking your first antibiotic dose. Most schools and workplaces follow this same guideline: you can return after 12 hours on antibiotics, as long as you no longer have a fever and feel well enough to function. Without antibiotics, strep remains contagious for two to three weeks, even if symptoms start to fade.
Strep spreads through respiratory droplets, so coughing, sneezing, and sharing utensils or cups are the main transmission routes. During those first 12 hours, washing your hands frequently and avoiding close contact with others goes a long way toward protecting the people around you.
Why You Need to Finish All 10 Days
Most people feel dramatically better within 48 hours, which creates a tempting urge to stop taking the pills. Resist it. The 10-day course exists because the bacteria that cause strep throat are stubborn. A shorter course can leave enough of them alive to re-establish the infection or, worse, to trigger complications that go well beyond a sore throat.
Rheumatic fever is the most concerning of these complications. It can develop one to five weeks after an untreated or inadequately treated strep infection. Rheumatic fever causes inflammation throughout the body, and if it isn’t caught quickly, it can permanently damage the heart valves. Severe rheumatic heart disease sometimes requires surgery and can be fatal. Untreated strep can also lead to post-streptococcal kidney inflammation, causing blood in the urine and swelling in the face and limbs.
A peritonsillar abscess is another possible complication, where pus collects near the tonsils and causes severe pain, difficulty opening the mouth, and a muffled voice. This typically requires drainage in addition to antibiotics. All of these complications are preventable by completing your antibiotic course.
Preventing Reinfection
Some people get strep throat repeatedly, sometimes within weeks of finishing treatment. A few practical steps can lower that risk.
Replace your toothbrush after you recover. Strep bacteria can survive on bristles even after you feel healthy again, and brushing with a contaminated toothbrush can reintroduce the bacteria into your system. This is a simple step that’s easy to overlook. The same goes for retainer cases, mouthguards, and anything else that regularly contacts your mouth.
Within your household, keep drinking glasses, utensils, and towels separate while someone is sick. Strep spreads easily among family members, so if one person tests positive, watch for symptoms in everyone else. Frequent handwashing with soap and water for at least 20 seconds remains the single most effective prevention measure. Alcohol-based hand sanitizer works as a backup when soap isn’t available.
If you or your child keep getting strep multiple times a year despite these precautions, your doctor may discuss whether a tonsillectomy makes sense. This is typically considered after seven or more infections in a single year, or a pattern of five or more per year over two consecutive years.