Augmentin vs. Doxycycline
See how Augmentin and Doxycycline compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Augmentin covers beta-lactamase-producing bacteria that plain amoxicillin cannot treat, while doxycycline covers a broader range of organisms including tick-borne and sexually transmitted infections.
Doxycycline is usually taken once or twice daily, while standard Augmentin tablets require dosing every 8 to 12 hours.
Doxycycline carries boxed warnings for tooth discoloration and fetal harm, making it unsuitable for young children and pregnant patients, while Augmentin is generally considered safer in those groups.
Augmentin vs. Doxycycline Drug Summary
Augmentin
Augmentin is a penicillin-class antibiotic that combines amoxicillin with clavulanate, a beta-lactamase inhibitor that helps it fight bacteria resistant to plain amoxicillin. It treats infections like pneumonia, sinusitis, ear infections, and urinary tract infections. It comes as tablets, chewable tablets, or liquid, taken by mouth every 8 to 12 hours depending on the dose.
Doxycycline
Doxycycline is a tetracycline-class antibiotic used for a wide range of bacterial infections, including chlamydia, Rocky Mountain spotted fever, and respiratory infections. It also serves as malaria prevention and anthrax exposure prophylaxis. It is taken by mouth, usually once or twice daily after a higher first-day dose.
Augmentin vs. Doxycycline Side Effects
Augmentin
Doxycycline
Augmentin vs. Doxycycline Dosage
Augmentin
Doxycycline
| STAGE | DOSE | WHEN |
| Starting dose | 250 mg/125 mg | At the start |
| Maximum dose | 2000 mg/125 mg | If needed |
| Dose changes | 4 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 200 mg | Day 1 |
| Maximum dose | 100 mg twice daily | If needed |
| Dose changes | 6 increases | As tolerated |
Augmentin
| STAGE | DOSE | WHEN |
| Starting dose | 250 mg/125 mg | At the start |
| Maximum dose | 2000 mg/125 mg | If needed |
| Dose changes | 4 increases | As tolerated |
Doxycycline
| STAGE | DOSE | WHEN |
| Starting dose | 200 mg | Day 1 |
| Maximum dose | 100 mg twice daily | If needed |
| Dose changes | 6 increases | As tolerated |
Augmentin vs. Doxycycline Indications
Augmentin
Augmentin is FDA-approved for common bacterial infections of the ears, sinuses, lungs, skin, and urinary tract. It is often chosen when a bacterial strain is suspected to produce beta-lactamase, an enzyme that would otherwise destroy plain amoxicillin. It is not effective against viral infections.
Community-acquired pneumonia (Augmentin XR)
Acute bacterial sinusitis
Acute bacterial otitis media
Skin and skin structure infections
Urinary tract infections
Doxycycline
Doxycycline is FDA-approved for many bacterial and rickettsial infections, including chlamydia, Rocky Mountain spotted fever, and cholera. It also prevents malaria and treats anthrax exposure. Doctors also prescribe it off-label for Lyme disease prevention and MRSA skin infections.
Sexually transmitted infections (chlamydia, gonorrhea)
Rocky Mountain spotted fever and rickettsial infections
Respiratory tract infections
Anthrax post-exposure prophylaxis
Malaria prevention
Augmentin vs. Doxycycline Pros and Cons
Augmentin
Augmentin's added clavulanate lets it treat resistant bacteria that plain amoxicillin cannot, making it a reliable option for common infections. It has no FDA boxed warnings and can be used in children, including chewable and liquid forms. Standard tablets need dosing two to three times daily, and it typically costs more than generic doxycycline.
Pros
Treats beta-lactamase-producing bacteria resistant to amoxicillin alone
No FDA boxed warnings
Available in chewable tablets and liquid for children
Considered safer than doxycycline during pregnancy
Cons
Higher rate of diarrhea (up to 9%) than typical doxycycline regimens
Cannot be used in patients with penicillin allergy history
Standard tablets require dosing every 8 to 12 hours
Higher list price, roughly $80 to $150 per month before insurance
Doxycycline
Doxycycline's once-or-twice-daily dosing and broad coverage of atypical organisms make it a practical option for many infections beyond what Augmentin treats. It carries boxed warnings for tooth discoloration and fetal harm, so it is avoided in young children and pregnant patients. Its low generic cost is a plus for patients paying out of pocket.
Pros
Simple once-or-twice-daily dosing for most infections
Covers atypical organisms like rickettsia and chlamydia that Augmentin does not treat
Safe option for patients with penicillin allergy
Lower list price, roughly $10 to $40 per month for generic tablets
Cons
Boxed warning for permanent tooth discoloration in children under 8
Boxed warning for fetal harm; not used in pregnancy
Causes photosensitivity, requiring sun protection during treatment
Can irritate or ulcerate the esophagus if not taken with enough water
Common Symptoms and Related Diseases You Can Explore
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