International Drug Mart

Amoxicillin vs Augmentin

Amoxicillin vs Augmentin

Active Ingredients

Amoxicillin (a penicillin antibiotic)
Amoxicillin + Clavulanic Acid (a penicillin antibiotic with beta-lactamase inhibitor)

Class

Antibiotic, Penicillin
Antibiotic, Penicillin with beta-lactamase inhibitor

Mechanism of Action

Inhibits bacterial cell wall synthesis
Inhibits bacterial cell wall synthesis; clavulanic acid protects amoxicillin from degradation by beta-lactamase enzymes

Indications

Mild to moderate bacterial infections: respiratory tract, urinary tract, skin infections, and ENT infections
Similar infections as amoxicillin; also effective against beta-lactamase producing bacteria

Effective Against

Gram-positive and some Gram-negative bacteria
Gram-positive and beta-lactamase producing bacteria that amoxicillin alone cannot treat

Spectrum of Activity

Narrower spectrum than Augmentin
Broader spectrum due to the addition of clavulanic acid

Dosage Forms

Oral capsules, tablets, chewable tablets, and suspension
Oral tablets, chewable tablets, suspension, extended-release tablets

Common Dosage

Varies: often 250-500 mg every 8 hours or 500-875 mg every 12 hours
Varies: often 500/125 mg every 8-12 hours or 875/125 mg every 12 hours

Typical Duration

7-10 days, depending on infection type and severity
7-14 days, depending on infection type and severity

Administration

Taken with or without food
Recommended to take with food to reduce stomach upset

Side Effects

Nausea, diarrhea, rash, vomiting, allergic reactions
Nausea, diarrhea (more frequent), rash, allergic reactions, abdominal pain

Effectiveness in Resistant Infections

Limited in infections caused by beta-lactamase producing organisms
Effective against beta-lactamase producing organisms

Pregnancy Category

Category B (Generally considered safe during pregnancy)
Category B (Generally considered safe during pregnancy)

Interactions

May interact with oral contraceptives, blood thinners
May interact with oral contraceptives, blood thinners, allopurinol

Cost

Generally cheaper than Augmentin
More expensive due to the combination of drugs

Storage

Store at room temperature
Store at room temperature; suspension must be refrigerated

Generic Availability

Available
Available
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Frequently Asked Questions

What's the difference between Amoxicillin and Augmentin?

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Amoxicillin is a single antibiotic. Augmentin contains Amoxicillin plus Clavulanate, which helps fight bacteria that resist standard antibiotics. Augmentin is usually used for tougher infections, while Amoxicillin works well for common ones like ear or throat infections.

Is Augmentin stronger than Amoxicillin?

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Yes, Augmentin is considered stronger because it contains an extra ingredient Clavulanate. This boosts Amoxicillin's ability to fight resistant bacteria. Doctors usually prescribe Augmentin when Amoxicillin alone isn't enough or when resistance is a concern.

What are the side effects of Amoxicillin vs Augmentin?

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Both may cause nausea, diarrhea, or rash. Augmentin is more likely to cause digestive upset due to Clavulanate. Taking the medication with food can help. Always tell your doctor if symptoms are severe or long-lasting.

Can I switch from Amoxicillin to Augmentin?

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Yes, switching is possible if your infection isn't responding to Amoxicillin alone. Your doctor might recommend Augmentin to better target resistant bacteria. Don't switch on your own always follow medical advice for safe treatment.

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