What kind of interaction is it?

Caution: an interaction that may reduce efficacy or raise side-effect risk and warrants monitoring.

Is this interaction backed by published research?

Yes. NutriStack lists 1 citation row for the Ashwagandha + Gotu Kola pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Supplement × Supplement·a caution·Emerging evidence

Ashwagandha + Gotu Kola

Q: Can I take Ashwagandha and Gotu Kola together?

Possibly, but with caution. Ashwagandha and Gotu Kola have a documented caution-tier interaction. Both are calming botanicals that may have additive sedative and central nervous system depressant effects, and both have isolated case reports linking them to liver injury. Combining them can amplify drowsiness and adds to cumulative hepatic monitoring concerns.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored caution row.

Caution Emerging evidence

Both are calming botanicals that may have additive sedative and central nervous system depressant effects, and both have isolated case reports linking them to liver injury. Combining them can amplify drowsiness and adds to cumulative hepatic monitoring concerns.

Supplement × Supplement

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

Ashwagandha and Gotu Kola

Pair type

Caution

Evidence

Emerging

Source citations

Scope

Supplement × Supplement

Last verified

June 4, 2026

CautionEmerging evidence

What is happening. Both are calming botanicals that may have additive sedative and central nervous system depressant effects, and both have isolated case reports linking them to liver injury. Combining them can amplify drowsiness and adds to cumulative hepatic monitoring concerns.

Mechanism. Gotu kola may exert mild GABAergic, sedating effects; ashwagandha has anxiolytic and sedative properties. Both have rare hepatotoxicity case reports, so concurrent use raises additive CNS depression and shared liver-monitoring considerations.

Recommendation. Start low, watch for excess sedation especially if also using sleep aids or alcohol, and limit duration of combined use. Avoid before driving until individual response is known. Monitor for any signs of liver dysfunction.

Stack Score

How it moves the number.

Effect on the composite score

If both Ashwagandha and Gotu Kola 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

1Brinker F. Herbal Contraindications and Drug Interactions. 4th ed. Eclectic Medical Publications. 2010.Needs sourceNo link

Check your full routine

One pair was the worked example.

Drop your supplements and prescriptions into NutriStack and it runs every pair at once: every interaction, synergy, timing rule, and contraindication, each linked to its primary source.

Open the interaction checker → Browse the research index