Supplement × Prescription·a caution·Emerging evidence

Ashwagandha + Clozapine

Caution Emerging evidence

Ashwagandha can be sedating in some patients and may add to clozapine-related somnolence or orthostatic symptoms.

From the database

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Substances
Pair type
Caution
Evidence
Emerging
Source citations
1
Scope
Supplement × Prescription
Last verified
June 4, 2026
CautionEmerging evidence

What is happening. Ashwagandha can be sedating in some patients and may add to clozapine-related somnolence or orthostatic symptoms.

Mechanism. Additive CNS sedation and possible blood-pressure lowering.

Recommendation. Avoid during clozapine initiation and use cautiously if stable; monitor for sedation and falls.

Stack Score

How it moves the number.

Effect on the composite score

If both Ashwagandha and Clozapine 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
  • 1U.S. National Library of Medicine. Clozapine tablets US Prescribing Information. 2026.Needs sourceNo link

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