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 Alcohol + Olanzapine pair, each linking to PubMed by PMID where available. Full sourcing methodology at https://nutristackapp.com/methodology/interactions.

Interaction databaseSupplement × PrescriptionReviewed May 2026

Alcohol and Olanzapine, a caution.

Q: Can I take Alcohol and Olanzapine together?

Possibly, but with caution. Alcohol and Olanzapine have a documented caution-tier interaction. Alcohol can add to olanzapine-related sedation, slowed reaction time, dizziness, and impaired coordination. Olanzapine can already cause sleepiness and orthostatic symptoms, so alcohol increases the chance of falls, unsafe driving, blackouts, and accidental injury. The risk is higher during dose starts or increases, in older adults, or with other sedating medicines.

Q: How does this affect a NutriStack Stack Score?

-5 to your Stack Score per scored caution row.

Alcohol can add to olanzapine-related sedation, slowed reaction time, dizziness, and impaired coordination. Olanzapine can already cause sleepiness and orthostatic symptoms, so alcohol increases the chance of falls, unsafe driving, blackouts, and accidental injury. The risk is higher during dose starts or increases, in older adults, or with other sedating medicines.

2 primary source citations. Strong evidence. Last verified May 30, 2026.

Open the interaction checker →Read the methodology

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.

Sourcing standards·Evidence tiers

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

Substances: Alcohol and Olanzapine
Pair type: Caution
Evidence (highest tier): Strong
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 · Strong evidence

Caution

What is happening. Alcohol can add to olanzapine-related sedation, slowed reaction time, dizziness, and impaired coordination. Olanzapine can already cause sleepiness and orthostatic symptoms, so alcohol increases the chance of falls, unsafe driving, blackouts, and accidental injury. The risk is higher during dose starts or increases, in older adults, or with other sedating medicines.

Mechanism. Alcohol is a CNS depressant that enhances inhibitory signaling and impairs cortical arousal and motor coordination. Olanzapine has central dopamine, serotonin, histamine H1, muscarinic, and alpha-1 adrenergic effects that can produce sedation and postural dizziness, leading to additive pharmacodynamic impairment.

Recommendation. Avoid alcohol while taking olanzapine, especially during titration or if you already feel sleepy. If you drink despite this, do not drive or use machinery and do not take extra sedatives. Seek urgent help for severe confusion, slow breathing, repeated falls, or inability to wake.

Sources (2)

Stack Score

How this pair moves the number.

Effect on the composite score

If both Alcohol and Olanzapine 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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