What kind of interaction is it?

Caution: an interaction that may reduce efficacy or raise side-effect risk and warrants monitoring.

Is this interaction backed by published research?

Yes. NutriStack lists 2 citation rows for the Candesartan + Garlic Extract pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Supplement × Prescription·a caution·Moderate evidence

Candesartan + Garlic Extract

Q: Can I take Candesartan and Garlic Extract together?

Possibly, but with caution. Candesartan and Garlic Extract have a documented caution-tier interaction. Garlic extract can produce a modest blood-pressure-lowering effect. Taken with candesartan, the antihypertensive effects may be additive, which could occasionally lead to dizziness, lightheadedness, or symptomatic low blood pressure, especially when standing.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored caution row.

Caution Moderate evidence

Garlic extract can produce a modest blood-pressure-lowering effect. Taken with candesartan, the antihypertensive effects may be additive, which could occasionally lead to dizziness, lightheadedness, or symptomatic low blood pressure, especially when standing.

Supplement × Prescription

Open the interaction checker → Read the methodology

From the database

What the row says.

Every entry follows the same shape: what is happening, the mechanism, and the recommendation.

Substances

Candesartan and Garlic Extract

Pair type

Caution

Evidence

Moderate

Source citations

Scope

Supplement × Prescription

Last verified

June 4, 2026

CautionModerate evidence

What is happening. Garlic extract can produce a modest blood-pressure-lowering effect. Taken with candesartan, the antihypertensive effects may be additive, which could occasionally lead to dizziness, lightheadedness, or symptomatic low blood pressure, especially when standing.

Mechanism. Garlic-derived organosulfur compounds promote nitric-oxide-mediated vasodilation, adding to the angiotensin-receptor-blocking vasodilatory effect of candesartan.

Recommendation. If using garlic extract with candesartan, monitor blood pressure and rise slowly from sitting or lying positions. Report persistent dizziness or fainting to a clinician, who may adjust dosing.

Stack Score

How it moves the number.

Effect on the composite score

If both Candesartan and Garlic Extract 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

1Ried K, Frank OR, Stocks NP. Aged garlic extract reduces blood pressure in hypertensives: a dose-response trial. European Journal of Clinical Nutrition. 2013.Needs sourceNo link
2Ried K. Garlic lowers blood pressure in hypertensive individuals, regulates serum cholesterol, and stimulates immunity: an updated meta-analysis and review. Journal of Nutrition. 2016.Needs sourceNo link

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