Medications That Should Not Mix With Alcohol: A List for Seniors

The average American over 65 takes four prescription medications plus two over-the-counter drugs. The probability that at least one of them interacts with alcohol is high — around 80 percent according to a 2024 NIAAA review. Some interactions are mild (extra drowsiness). Some are serious (internal bleeding, liver failure, fainting). This guide walks through the most common categories, what the risk is, and what to ask your pharmacist.

Blood thinners are the highest-risk category. Warfarin (Coumadin), apixaban (Eliquis), rivaroxaban (Xarelto), and dabigatran (Pradaxa) all increase the risk of bleeding when combined with alcohol. The risk is not from a single drink. It is from the cumulative effect of regular daily drinking, which thins the blood further. A bruise that used to heal in a week now lingers for three. A nosebleed that used to stop on its own now lasts 20 minutes. Internal bleeding (in the stomach or brain) is the most dangerous outcome and may have no warning signs. NIAAA recommends no more than three drinks per week for anyone on a blood thinner, and many cardiologists recommend zero.

Antidepressants are the second-largest category. SSRIs (sertraline, citalopram, escitalopram, fluoxetine) and SNRIs (venlafaxine, duloxetine) cause increased drowsiness and impaired coordination when combined with alcohol. The bigger concern is mood: alcohol is a depressant. And it can blunt the effect of the medication and worsen depression over weeks of regular drinking. Tricyclic antidepressants (amitriptyline, nortriptyline) are higher-risk and combine with alcohol to cause severe drowsiness and dangerously low blood pressure.

Sleep medications are the third category. Zolpidem (Ambien), eszopiclone (Lunesta), trazodone (often prescribed for sleep at low doses), and any benzodiazepine (alprazolam, lorazepam, clonazepam, diazepam) all amplify the sedative effect of alcohol. The combination can cause severe drowsiness, confusion, slowed breathing, and falls in the night. The American Geriatrics Society Beers Criteria — the standard list of risky medications for seniors — flags this combination as one of the most dangerous in older adults.

Blood pressure medications (lisinopril, amlodipine, metoprolol, losartan, hydrochlorothiazide) combine with alcohol to drop blood pressure too low, which causes dizziness, fainting, and falls. The risk peaks 1 to 3 hours after the drink. Many older adults fall at night going to the bathroom after dinner-with-wine, hitting the dose peak of their blood pressure pill at the same time alcohol is at its highest.

Diabetes medications (metformin, glipizide, glyburide, insulin) can cause low blood sugar when combined with alcohol, especially if the drink is consumed without food. Symptoms of low blood sugar — confusion, sweating, shakiness — also look like being drunk, so they are often missed.

Acetaminophen (Tylenol) plus alcohol is the most common over-the-counter interaction. Both are processed by the liver. Regular drinking with regular Tylenol use raises the risk of liver damage. The FDA recommends no more than three alcoholic drinks per day for anyone taking acetaminophen. For older adults, the threshold should be lower.

The practical answer is to talk to your pharmacist, who is free and trained for this exact question. Walk into any CVS, Walgreens, or Walmart pharmacy with your medication list and ask: which of these interact with alcohol, and how much can I safely drink? The conversation takes five minutes. Pharmacists know this material better than anyone and have no incentive to lecture.

(Sources: NIAAA Harmful Interactions Mixing Alcohol with Medicines, niaaa.nih.gov; American Geriatrics Society Beers Criteria 2023 Update; FDA Acetaminophen and Liver Injury fact sheet, accessed May 2026)