Augmentin drug interactions: a practical overview
Drug interactions are the single biggest cause of preventable medication problems. Augmentin (Amoxicillin/Clavulanate) interacts to varying degrees with several classes of medication and with a smaller list of foods. This page summarises the practically important ones at 500/125mg, 875/125mg, 1000/62.5mg, framed for a real-world prescription review rather than an exhaustive PDF list.
High-priority interactions for Augmentin
For Amoxicillin, Clavulanate, the most clinically relevant interactions are typically with strong CYP3A4 inhibitors and inducers, with cardiovascular medications (notably nitrates for several Antibiotics agents), with central nervous system depressants, and with medications affecting blood pressure or heart rate. Amoxicillin inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), but is hydrolysed by beta-lactamase enzymes produced by some resistant bacteria.
Working with the pharmacist
A pharmacist review of all current medications is the practical safeguard against unintended interactions with Augmentin. According to the prescribing information for Amoxicillin, Clavulanate, the full medication list — prescription, OTC, supplements and recreational substances — should be reviewed before starting and at every dose change at 500/125mg, 875/125mg, 1000/62.5mg.
Frequently asked questions
What's the most important Augmentin interaction to know? ▾
For most Antibiotics medications, the highest-priority interaction is with nitrate medications used for chest pain — this combination is often a hard contraindication. After that, strong CYP3A4 inhibitors (some antifungals, macrolides) are the next concern at routine 500/125mg, 875/125mg, 1000/62.5mg doses.
Do I need to tell the pharmacist about supplements? ▾
Yes. Supplements and herbal products can interact with Augmentin in ways that prescription drug-drug interaction databases miss. The pharmacist needs the complete picture — including supplements like St John's Wort, grapefruit-containing products and high-dose vitamins — to flag risks at 500/125mg, 875/125mg, 1000/62.5mg.
More on Augmentin
- With alcoholAugmentin and alcohol — is it safe to drink?
- With foodShould Augmentin be taken with food?
- Side effectsAugmentin side effects: common, rare and warning signs
- Dosage guideAugmentin dosage guide: how much to take and when
- OnsetHow fast does Augmentin start working?
- DurationHow long does Augmentin last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.