Amoxicillin 400mg/5mL
Generic For: Amoxil
Amoxicillin 400mg/5mL (brand name Amoxil) is a penicillin-class antibiotic oral suspension used to treat bacterial infections such as sinus infections, tooth infections, ear infections, and throat infections. Many patients ask about taking amoxicillin and prednisone together for sinus or dental infections — a licensed provider can review whether that combination is appropriate for you. Your order ships from a licensed U.S. pharmacy after a provider reviews your prescription.
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10-day supply · $0.25/mL
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Buy Amoxicillin 400mg/5mL (Amoxil) Suspension Online
A penicillin-class antibiotic for sinus infections, tooth infections, and ear infections
Amoxicillin 400mg/5mL Quick Facts
| Drug class | Penicillin-class antibiotic |
|---|---|
| Treats | Sinus infections, tooth infections, ear infections, throat infections |
| Form | Suspension |
| Typical dosing | Fill amber bottle with water to the fill line. Follow label directions. Children 45 - 90 lbs: take 5 mL by mouth every 12 hrs for 10 days. Use within 14 days after mixing and discard any remainder. |
| Prescription required | Yes — prescription only |
What Is Amoxicillin 400mg/5mL?
Amoxicillin is a penicillin-class antibiotic that works by stopping the growth of susceptible bacteria. The 400mg/5mL strength is a liquid suspension, which makes it easier to take for people who have difficulty swallowing tablets or capsules. It is commonly prescribed for sinus infections and tooth infections, and some providers pair amoxicillin and prednisone when significant inflammation is present. Amoxicillin treats bacterial infections only and does not work against viral illnesses like colds or the flu.
What Does Amoxicillin 400mg/5mL Treat?
Sinusitis (sinus infections)
Dental infections (tooth infections)
Ear, nose, and throat infections (including otitis media and strep throat)
Lower respiratory tract infections (such as pneumonia)
Urinary tract infections
Skin and skin structure infections
H. pylori eradication (as part of combination therapy)
Amoxicillin 400mg/5mL Dosage
Mild/moderate infections: 500 mg by mouth every 12 hours OR 250 mg every 8 hours
Severe infections: 875 mg by mouth every 12 hours OR 500 mg every 8 hours
Shake suspension well before each dose; complete the full prescribed course
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Amoxicillin 400mg/5mL Side Effects
Common side effects
- Nausea
- Vomiting
- Diarrhea
- Headache
- Stomach upset
- Rash
- Changes in taste
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Severe allergic reaction (hives, swelling, trouble breathing)
- Severe or persistent watery/bloody diarrhea (C. difficile)
- Severe skin reactions (blistering, peeling rash)
- Yellowing of skin or eyes (liver problems)
- Unusual bruising or bleeding
Warnings & Interactions
Do not use if allergic to penicillins or cephalosporin cross-reactivity is a concern
Serious, sometimes fatal, anaphylactic reactions have been reported
May cause C. difficile–associated diarrhea, including months after treatment
Use with allopurinol may increase risk of rash
May reduce effectiveness of oral contraceptives; consider backup contraception
Probenecid increases amoxicillin blood levels
Dose adjustment needed in severe kidney impairment
Tell your prescriber about all medications, supplements, and health conditions before starting amoxicillin 400mg/5ml.
Sources & References
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