Supplement × Prescription·contraindicated·Moderate evidence

Clomipramine + L-Tryptophan

Contraindicated Moderate evidence

Supplemental L-Tryptophan can increase serotonin production during clomipramine therapy.

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Pair type
Contraindicated
Evidence
Moderate
Source citations
1
Scope
Supplement × Prescription
Last verified
June 4, 2026
ContraindicatedModerate evidence

What is happening. Supplemental L-Tryptophan can increase serotonin production during clomipramine therapy.

Mechanism. Tryptophan is converted to serotonin, compounding clomipramine's serotonin reuptake blockade.

Recommendation. Avoid L-Tryptophan supplements while taking clomipramine.

Stack Score

How it moves the number.

Effect on the composite score

If both Clomipramine and L-Tryptophan are in the same stack, this pair applies −25 to your Stack Score (per scored contraindication 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
  • 1Boyer EW, Shannon M. The serotonin syndrome. N Engl J Med. 2005.Needs sourceNo link

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