Clarithromycin 500mg
Generic For: Biaxin
Clarithromycin 500mg (brand name Biaxin) is a macrolide antibiotic used to treat bacterial infections of the respiratory tract, sinuses, and skin, and as part of combination therapy for H. pylori-associated stomach ulcers. After a licensed provider reviews your health information and issues a valid prescription, your medication ships directly from a licensed U.S. pharmacy.
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7-day supply · $2.14/tablet
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Buy Clarithromycin 500mg Online (Biaxin)
A macrolide antibiotic for bacterial respiratory infections, skin infections, and H. pylori-related ulcers
Clarithromycin 500mg Quick Facts
| Drug class | Macrolide antibiotic |
|---|---|
| Treats | Respiratory infections, sinusitis, skin infections, H. pylori |
| Form | Tablet |
| Typical dosing | Take 1 tablet by mouth twice daily for 7 days. |
| Prescription required | Yes — prescription only |
What Is Clarithromycin 500mg?
Clarithromycin is a prescription macrolide antibiotic sold under the brand name Biaxin. It works by stopping the growth of bacteria that cause certain infections. Doctors prescribe clarithromycin for infections such as pneumonia, bronchitis, sinusitis, strep throat, and skin infections, and in combination regimens to treat H. pylori infection linked to stomach ulcers. It is not effective against viral illnesses like colds or the flu.
What Does Clarithromycin 500mg Treat?
Community-acquired pneumonia
Acute worsening of chronic bronchitis
Acute maxillary sinusitis
Pharyngitis and tonsillitis (strep throat)
Skin and skin structure infections
H. pylori eradication (with other medications)
Mycobacterium avium complex (MAC) infection, treatment and prevention
Clarithromycin 500mg Dosage
Take 250–500 mg by mouth every 12 hours for 7–14 days, per infection type.
H. pylori: 500 mg by mouth twice daily for 10–14 days with amoxicillin and a proton pump inhibitor.
MAC: 500 mg by mouth twice daily in combination therapy.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Clarithromycin 500mg Side Effects
Common side effects
- Diarrhea
- Nausea
- Abnormal or metallic taste
- Stomach pain
- Vomiting
- Headache
- Indigestion
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Severe or persistent diarrhea (possible C. difficile infection)
- Irregular heartbeat or fainting (QT prolongation)
- Signs of liver problems (yellowing skin/eyes, dark urine)
- Severe skin reactions (rash, blistering, peeling)
- Allergic reaction (swelling of face, lips, throat; trouble breathing)
Warnings & Interactions
Do not use with pimozide, cisapride, ergotamine, or dihydroergotamine
Do not use with lovastatin or simvastatin
Contraindicated with prior clarithromycin-related liver problems or macrolide allergy
May prolong the QT interval; use caution with heart rhythm conditions
Many drug interactions via CYP3A4 — review all medications with your pharmacist
Avoid colchicine co-use in patients with kidney or liver impairment
Use in pregnancy only if no suitable alternative is available
Tell your prescriber about all medications, supplements, and health conditions before starting clarithromycin 500mg.
Sources & References
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