Interaction databaseSupplement × PrescriptionReviewed May 2026

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)
  1. 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
  2. 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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