What kind of interaction is it?

Synergy: a documented combination effect that is stronger or more useful than either substance taken alone.

Is this interaction backed by published research?

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

Interaction databaseSupplement × PrescriptionReviewed May 2026

Acyclovir and Vitamin C, a synergy.

Q: Can I take Acyclovir and Vitamin C together?

Yes. The combination of Acyclovir and Vitamin C produces a measurable benefit. Vitamin C has in vitro antiviral activity against HSV and supports immune function, and a topical ascorbate solution showed modest benefit in recurrent mucocutaneous herpes. Evidence for additive benefit when combined with acyclovir is limited but the combination is low risk and may modestly support immune-mediated viral clearance.

Q: How does this affect a NutriStack Stack Score?

+2 to your Stack Score per scored synergy row.

Vitamin C has in vitro antiviral activity against HSV and supports immune function, and a topical ascorbate solution showed modest benefit in recurrent mucocutaneous herpes. Evidence for additive benefit when combined with acyclovir is limited but the combination is low risk and may modestly support immune-mediated viral clearance.

2 primary source citations. Emerging evidence. Last verified May 30, 2026.

Open the interaction checker →Read the methodology

One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.

Sourcing standards·Evidence tiers

From the interaction database

What the row says.

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

At a glance

Substances: Acyclovir and Vitamin C
Pair type: Synergy
Evidence (highest tier): Emerging
Source citations: 2 sources
Stack Score effect: +2 to your Stack Score (per scored synergy row).
Scope: Supplement × Prescription
Last verified: May 30, 2026

Synergy · Emerging evidence

Synergy

What is happening. Vitamin C has in vitro antiviral activity against HSV and supports immune function, and a topical ascorbate solution showed modest benefit in recurrent mucocutaneous herpes. Evidence for additive benefit when combined with acyclovir is limited but the combination is low risk and may modestly support immune-mediated viral clearance.

Mechanism. Vitamin C inactivates virions in vitro via oxidative mechanisms, supports neutrophil and lymphocyte function, and regenerates other antioxidants. Acyclovir is a nucleoside analogue inhibiting viral DNA polymerase; the mechanisms are independent.

Recommendation. Standard-dose vitamin C (500-1000 mg/day) is a reasonable adjunct during HSV outbreaks while taking acyclovir. Do not use high-dose vitamin C as a substitute for prescribed antivirals.

Sources (2)

Stack Score

How this pair moves the number.

Effect on the composite score

If both Acyclovir and Vitamin C are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).

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

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