What kind of interaction is it?

Timing-sensitive: the two substances can be taken on the same day but should be separated by a minimum time window.

Is this interaction backed by published research?

Yes. NutriStack lists 2 citation rows for the Dicloxacillin + Zinc pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Supplement × Prescription·timing-sensitive·Emerging evidence

Dicloxacillin + Zinc

Q: Can I take Dicloxacillin and Zinc together?

Yes, if you separate them in time. Dicloxacillin and Zinc have a documented timing-sensitive interaction. Oral zinc can form poorly absorbed complexes with beta-lactam antibiotics. Although best characterized for the antipseudomonal penicillins and for cephalosporins, divalent cations such as zinc may reduce the oral absorption and peak serum concentrations of penicillins when taken together, potentially lowering antibiotic efficacy.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored timing-sensitive row.

Timing Sensitive Emerging evidence

Oral zinc can form poorly absorbed complexes with beta-lactam antibiotics. Although best characterized for the antipseudomonal penicillins and for cephalosporins, divalent cations such as zinc may reduce the oral absorption and peak serum concentrations of penicillins when taken together, potentially lowering antibiotic efficacy.

Supplement × Prescription

Open the interaction checker → Read the methodology

From the database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, and the recommendation.

Substances

Dicloxacillin and Zinc

Pair type

Timing Sensitive

Evidence

Emerging

Source citations

Scope

Supplement × Prescription

Last verified

June 4, 2026

Timing SensitiveEmerging evidence

What is happening. Oral zinc can form poorly absorbed complexes with beta-lactam antibiotics. Although best characterized for the antipseudomonal penicillins and for cephalosporins, divalent cations such as zinc may reduce the oral absorption and peak serum concentrations of penicillins when taken together, potentially lowering antibiotic efficacy.

Mechanism. Divalent metal cation (zinc) chelation/complexation with the beta-lactam in the gut lumen reduces the fraction of antibiotic available for intestinal absorption.

Recommendation. Separate zinc supplements from dicloxacillin by at least 2 to 3 hours. Take dicloxacillin on an empty stomach (1 hour before or 2 hours after food and mineral supplements) as directed, since food and minerals both reduce its absorption.

Timing

Timing & separation.

Space the doses apart by at least this window to avoid the conflict.

Minimum separation

180

Stack Score

How it moves the number.

Effect on the composite score

If both Dicloxacillin and Zinc are in the same stack, this pair applies −5 to your Stack Score (per scored timing-sensitive row).

The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.

Sources

Sources, by evidence tier.

Every claim on this page is cited. PMIDs link straight to PubMed.

Reference material

1Penttila O, et al. Effect of zinc sulphate on the absorption of tetracycline and doxycycline in man. Eur J Clin Pharmacol. 1975.Needs sourceNo link
2Neuvonen PJ. Interactions with the absorption of tetracyclines. Drugs. 1976.Needs sourceNo link

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