Strep throat requires antibiotics to clear the infection, and over-the-counter pain relievers to manage symptoms while the antibiotics work. Most people start feeling better within one to two days of beginning antibiotic treatment, with full symptom resolution in seven to ten days.
Antibiotics: The Core Treatment
Penicillin and amoxicillin are the standard first-line antibiotics for strep throat. They’re effective, inexpensive, and narrow in scope, meaning they target the bacteria causing the infection without wiping out as many of your body’s beneficial bacteria. A typical course lasts 10 days, and finishing the entire prescription matters even after you feel better. Stopping early can allow the bacteria to survive and potentially cause complications.
You should start to notice improvement within a day or two of your first dose. Once you’ve been on antibiotics for 24 hours and have no fever, you’re generally no longer contagious and can return to work or school.
If You’re Allergic to Penicillin
Several alternatives exist if you can’t take penicillin or amoxicillin. The CDC lists cephalosporin-type antibiotics (like cephalexin) as options, though these should be avoided if your penicillin allergy involves a severe immediate reaction such as hives or throat swelling, since the two drug families share some chemical similarities. For people with that kind of severe allergy, other classes of antibiotics like azithromycin, clarithromycin, or clindamycin are used instead.
Azithromycin has the shortest course at five days total. Most of the other alternatives require the same 10-day treatment window as penicillin. Your provider will choose based on the nature of your allergy and your medical history.
Pain Relief While Antibiotics Work
Since antibiotics take a day or two to kick in, managing throat pain and fever in the meantime is important. Ibuprofen (Advil, Motrin) and acetaminophen (Tylenol) are the go-to options. Ibuprofen has the advantage of reducing both pain and inflammation, while acetaminophen handles pain and fever. You can alternate between the two if one alone isn’t enough, since they work through different pathways. Aspirin should not be given to children or teenagers due to the risk of a rare but serious condition called Reye’s syndrome.
Beyond medication, simple measures help. Warm liquids, cold foods like popsicles, and saltwater gargles can all soothe a raw throat. Staying hydrated is especially important when you have a fever.
Steroids for Severe Pain
For particularly painful sore throats, a single dose of a corticosteroid like dexamethasone can speed up pain relief. A clinical practice guideline published in The BMJ found that a one-time steroid dose increases the chance of complete pain resolution at 24 and 48 hours and shortens the time until you first feel relief. The evidence quality behind this was rated moderate to high.
This isn’t standard for every strep case, but it’s an option worth discussing with your provider if your pain is severe enough that swallowing is very difficult. A single dose carries minimal risk of side effects. This approach doesn’t apply to people with mono, weakened immune systems, or children under five, as those groups weren’t well studied.
Why Antibiotics Matter Beyond Symptom Relief
Strep throat can resolve on its own in many cases, which raises a fair question: why bother with antibiotics? The answer is that untreated strep can trigger serious complications. Rheumatic fever, which can permanently damage heart valves, is the most well-known risk. Kidney inflammation (post-streptococcal glomerulonephritis) is another, though most people who develop it recover within a few weeks. Rare cases, particularly in adults, can lead to long-term kidney damage or kidney failure.
Antibiotics also shorten how long you’re contagious, reduce symptom duration, and lower the risk of the infection spreading to your ears, sinuses, or tonsils. The 10-day course may feel long when you’re feeling better by day three, but it’s specifically calibrated to fully eliminate the bacteria and prevent these downstream problems.
What to Expect During Recovery
The first 24 to 48 hours are typically the worst. Fever, severe throat pain, swollen lymph nodes, and difficulty swallowing are all common during this window. Once antibiotics gain traction, symptoms improve noticeably. Most people feel significantly better by day three or four, with lingering mild soreness and fatigue tapering off over the following week. Full recovery usually takes seven to ten days.
If you don’t notice any improvement after two to three days on antibiotics, or if symptoms worsen, that’s worth a follow-up visit. It could mean the diagnosis needs a second look, or that the particular strain isn’t responding to the prescribed antibiotic.