Augmentin (amoxicillin/clavulanate): What you need to know
Augmentin is a combo antibiotic—amoxicillin plus clavulanate—that treats many common bacterial infections. The clavulanate blocks enzymes some bacteria use to resist amoxicillin, so this mix works where plain amoxicillin might fail. Folks use it for ear infections, sinusitis, bronchitis, some skin infections and uncomplicated urinary tract infections.
What makes Augmentin handy is its broader coverage compared with amoxicillin alone. But broader coverage also means more side effects for some people, so it’s not the default for every simple infection.
Typical doses and how to take it
Adults often take 500/125 mg every 8 hours or 875/125 mg every 12 hours, depending on the infection and product. For kids, dosing is weight-based; your doctor will give a specific mg/kg dose. Take Augmentin with food to lower stomach upset and follow the full course your prescriber gave—even if you feel better after a couple of days.
Missed a dose? Take it as soon as you remember, unless it’s almost time for the next one. Don’t double up.
Common side effects and red flags
The most common complaints are diarrhea, nausea, and occasional rash. Diarrhea may be from the antibiotic itself or from an overgrowth of Clostridioides difficile; if you have severe, watery, or bloody diarrhea, call a doctor right away. Stop the drug and seek emergency care if you get swelling of the face or throat, trouble breathing, or a sudden widespread rash—those are signs of a serious allergic reaction.
A less common but important issue is liver inflammation. Dark urine, yellowing skin or eyes, and persistent stomach pain need prompt medical attention.
Tell your prescriber about other meds you take—especially blood thinners like warfarin or drugs such as methotrexate—because antibiotics can change how those drugs act in your body.
Don’t use Augmentin for viral infections like colds or most sore throats. Using antibiotics when they aren’t needed fuels resistance and can make future infections harder to treat.
If you have a penicillin allergy, say so. People with a true immediate allergy (hives, swelling, breathing trouble) usually should avoid penicillins. Your doctor may pick an alternative depending on the infection: macrolides (azithromycin, clarithromycin), doxycycline, or others. Some alternatives aren’t safe for every infection, so decision-making belongs to your clinician.
Store Augmentin tablets at room temperature away from moisture. For oral suspensions, follow pharmacy instructions—some must be refrigerated and used within a set number of days.
Short takeaway: Augmentin is a useful antibiotic when chosen for the right bug and used correctly. Take it with food, finish the whole course, report severe side effects, and always tell your provider about allergies and other medicines. If you’re unsure whether you need it, ask your doctor instead of guessing.
