Amlodipine and Curcumin Phytosome, a caution.
Curcumin phytosome formulations achieve 20-30 times higher plasma curcumin levels than standard curcumin, which magnifies any CYP3A4-mediated drug interaction. Because amlodipine is cleared almost entirely by CYP3A4, even modest enzyme inhibition can produce clinically meaningful increases in drug exposure, with hypotension, peripheral edema, or reflex tachycardia.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
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At a glance
- Substances
- Amlodipine and Curcumin Phytosome
- Pair type
- Caution
- Evidence (highest tier)
- Emerging
- Source citations
- 2 sources
- Stack Score effect
- −5 to your Stack Score (per scored caution row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Caution · Emerging evidence
Caution
What is happening. Curcumin phytosome formulations achieve 20-30 times higher plasma curcumin levels than standard curcumin, which magnifies any CYP3A4-mediated drug interaction. Because amlodipine is cleared almost entirely by CYP3A4, even modest enzyme inhibition can produce clinically meaningful increases in drug exposure, with hypotension, peripheral edema, or reflex tachycardia.
Mechanism. Phytosome formulations dramatically increase curcumin bioavailability, amplifying CYP3A4 and P-gp inhibition. Amlodipine clearance falls accordingly, raising AUC and the half-life.
Recommendation. Avoid pairing curcumin phytosome products with amlodipine. If your clinician approves their use, separate doses by at least 4 hours, monitor blood pressure for 2 weeks, and stop or reduce the dose if readings drop below your usual range or you develop new swelling.
Minimum separation. 240
Sources (2)
- Jiang N, Zhang M, Meng X, Sun B. Effects of curcumin on the pharmacokinetics of amlodipine in rats and its potential mechanism. Pharm Biol. 2020;58(1):465-470. PMID 32432949
- Guo Y, Chen Y, Tan ZR, Klaassen CD, Zhou HH. Repeated administration of berberine inhibits cytochromes P450 in humans. Eur J Clin Pharmacol. 2012;68(2):213-7. PMID 21870106
Stack Score
How this pair moves the number.
Effect on the composite score
If both Amlodipine and Curcumin Phytosome 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 documented at /methodology/stack-score.
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