Alcohol and Nicotine, a conflict.
Combining nicotine and alcohol increases cardiovascular strain (heart rate and blood pressure) and reinforces co-dependence, with the two substances mutually increasing consumption and addiction risk.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.
At a glance
- Pair type
- Conflict
- Evidence (highest tier)
- Strong
- Source citations
- 2 sources
- Stack Score effect
- −10 to your Stack Score (per scored conflict row).
- Scope
- Supplement × Supplement
- Last verified
- May 30, 2026
Conflict · Strong evidence
Conflict
What is happening. Combining nicotine and alcohol increases cardiovascular strain (heart rate and blood pressure) and reinforces co-dependence, with the two substances mutually increasing consumption and addiction risk.
Mechanism. Nicotine is a stimulant that raises heart rate and blood pressure while alcohol is a depressant, so co-use produces conflicting autonomic effects, and each drug increases craving and intake of the other through shared dopaminergic reward pathways.
Recommendation. Do not combine. If you use both, seek medical advice and support for reduction or cessation, since the pairing raises cardiovascular and dependence risks.
Sources (2)
- Hurley LL et al. Positive and negative effects of alcohol and nicotine and their interactions: a mechanistic review. Neurotox Res. 2012;21(1):57-69. PMID 21932109
- Verplaetse TL et al. An overview of alcohol and tobacco/nicotine interactions in the human laboratory. Am J Drug Alcohol Abuse. 2017;43(2):186-196. PMID 27439453
Stack Score
How this pair moves the number.
Effect on the composite score
If both Alcohol and Nicotine are in the same stack, this pair applies −10 to your Stack Score (per scored conflict row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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