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Supplement × Prescription·a caution·Insufficient evidence

Famciclovir + Magnesium Glycinate

Caution Insufficient evidence

Famciclovir absorption is not dependent on gastric acidity and it does not chelate divalent cations in a clinically significant way, so magnesium glycinate is not expected to reduce its absorption. Famciclovir bioavailability is high and unaffected by typical mineral supplements.

Source citations
1
Pair type
Caution
Evidence
Insufficient
Scope
Supplement × Prescription
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From the database

What the row says.

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

Substances
Famciclovir and Magnesium Glycinate
Pair type
Caution
Evidence
Insufficient
Source citations
1
Scope
Supplement × Prescription
Last verified
June 4, 2026
CautionInsufficient evidence

What is happening. Famciclovir absorption is not dependent on gastric acidity and it does not chelate divalent cations in a clinically significant way, so magnesium glycinate is not expected to reduce its absorption. Famciclovir bioavailability is high and unaffected by typical mineral supplements.

Mechanism. Famciclovir is well absorbed (roughly 77 percent bioavailability) by passive and carrier-mediated mechanisms not reliant on chelation-sensitive structures, so magnesium does not form interfering complexes or meaningfully alter uptake.

Recommendation. No dose separation is required between magnesium glycinate and famciclovir. Take famciclovir as prescribed with or without food.

Stack Score

How it moves the number.

Effect on the composite score

If both Famciclovir and Magnesium Glycinate are in the same stack, this pair applies −5 to your Stack Score (per scored caution 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

1
  • 1Gill KS, Wood MJ. The clinical pharmacokinetics of famciclovir. Clin Pharmacokinet. 1996.Needs sourceNo link

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NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.