NutriStack
Alcohol and Alfuzosin, a caution.
Alfuzosin is an alpha1 blocker used for urinary symptoms and can contribute to dizziness or low blood pressure in susceptible patients. Alcohol can independently worsen orthostatic hypotension. Combining them may increase lightheadedness, fainting, or falls, especially after dose changes or with other antihypertensive medicines.
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
- Pair type
- Caution
- Evidence (highest tier)
- Moderate
- 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 · Moderate evidence
Caution
What is happening. Alfuzosin is an alpha1 blocker used for urinary symptoms and can contribute to dizziness or low blood pressure in susceptible patients. Alcohol can independently worsen orthostatic hypotension. Combining them may increase lightheadedness, fainting, or falls, especially after dose changes or with other antihypertensive medicines.
Mechanism. Alfuzosin reduces alpha1-mediated smooth muscle tone and can lower vascular resistance. Alcohol blunts orthostatic vasoconstriction, so the combination can impair blood pressure compensation during standing.
Recommendation. Limit alcohol when starting alfuzosin or when your dose changes. If you choose to drink, use small amounts, avoid standing quickly, and pause alcohol if you notice dizziness or near-fainting.
Sources (2)
- Zhang LT, Lee SW, Park K, Chung WS, Kim SW, Hyun JS, Moon DG, Yang SK. Multicenter, prospective, comparative cohort study evaluating the efficacy and safety of alfuzosin 10 mg with regard to blood pressure in men with lower urinary tract symptoms suggestive of benign prostatic hyperplasia with or without antihypertensive medications. Clin Interv Aging. 2015;10:277-286. PMID 25653511
- Narkiewicz K, Cooley RL, Somers VK. Alcohol potentiates orthostatic hypotension: implications for alcohol-related syncope. Circulation. 2000;101(4):398-402. PMID 10653831
Stack Score
How this pair moves the number.
Effect on the composite score
If both Alcohol and Alfuzosin 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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