Supplement × Prescription·contraindicated·Moderate evidence
5-HTP can raise serotonin synthesis and add to levomilnacipran's serotonergic activity.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
What is happening. 5-HTP can raise serotonin synthesis and add to levomilnacipran's serotonergic activity.
Mechanism. 5-HTP bypasses the rate-limiting step in serotonin synthesis while levomilnacipran inhibits serotonin reuptake.
Recommendation. Avoid 5-HTP while taking levomilnacipran.
Effect on the composite score
If both 5-HTP and Levomilnacipran 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.
Every claim on this page is cited. PMIDs link straight to PubMed.
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NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
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