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 NAC + Vitamin C pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Interaction databaseSupplement × SupplementReviewed May 2026

NAC and Vitamin C, a synergy.

Q: Can I take NAC and Vitamin C together?

Yes. The combination of NAC and Vitamin C produces a measurable benefit. NAC replenishes intracellular glutathione, while vitamin C provides extracellular antioxidant support. Complementary antioxidant systems.

Q: How does this affect a NutriStack Stack Score?

+2 to your Stack Score per scored synergy row.

NAC replenishes intracellular glutathione, while vitamin C provides extracellular antioxidant support. Complementary antioxidant systems.

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

Synergy · Moderate evidence

Synergy

What is happening. NAC replenishes intracellular glutathione, while vitamin C provides extracellular antioxidant support. Complementary antioxidant systems.

Mechanism. NAC provides cysteine for glutathione synthesis (rate-limiting substrate). Vitamin C recycles oxidized glutathione (GSSG) back to reduced GSH and provides parallel antioxidant protection.

Recommendation. Take together for comprehensive antioxidant coverage, glutathione (intracellular) + ascorbate (extracellular).

Sources (2)

Rushworth GF, Megson IL. Existing and potential therapeutic uses for N-acetylcysteine. Pharmacol Ther. 2014
Bayu P, Wibisono JJ. Vitamin C and E antioxidant supplementation may significantly reduce pain symptoms in endometriosis: A systematic review and meta-analysis of randomized controlled trials.. PLoS One. 2024. PMID 38820340

Stack Score

How this pair moves the number.

Effect on the composite score

If both NAC 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.

Check your full routine

One pair was the worked example. NutriStack runs every pair in your stack at once.

Drop in your supplements and prescriptions and the public database surfaces every interaction, synergy, timing rule, and contraindication, every one linked to its primary source.

Open the interaction checker →Browse the full research index