Which medications should not be mixed with alcohol?

Opioids and Alcohol

Mixing opioids like oxycodone (OxyContin), hydrocodone (Vicodin), or fentanyl with alcohol intensifies central nervous system depression, raising risks of slowed breathing, coma, and overdose death. Both suppress respiration; combined, they amplify this effect.[1][2]

Antibiotics and Alcohol

• Metronidazole (Flagyl): Causes severe nausea, vomiting, flushing, and rapid heartbeat—known as a disulfiram-like reaction.
  
• Tinidazole: Similar to metronidazole, triggers intense GI distress and headache.
  
• Cefotetan or cefoperazone: Produce flushing, sweating, and tachycardia due to acetaldehyde buildup.
  Even some like erythromycin may heighten stomach upset, though evidence is weaker.[3][4]
  
  

Acetaminophen (Tylenol) and Alcohol

Daily alcohol use with acetaminophen stresses the liver, increasing acute liver failure risk by up to 4 times. Occasional mixing heightens toxicity from acetaminophen's metabolite.[1][5]

Antidepressants and Alcohol

• MAOIs (e.g., phenelzine/Nardil): Risk hypertensive crisis from tyramine in drinks.
  
• SSRIs (e.g., sertraline/Zoloft) or SNRIs: Worsen drowsiness, impair judgment, and boost suicide risk in young adults.
  Alcohol undermines therapeutic effects across classes.[2][6]
  
  

Sleep Aids and Sedatives

Benzodiazepines (Xanax, Valium, Ativan) plus alcohol cause profound sedation, blackouts, and respiratory arrest—major factor in ER visits. Non-benzos like zolpidem (Ambien) carry similar dangers.[1][7]

Antihistamines and Cough Meds

First-generation antihistamines (diphenhydramine/Benadryl) and dextromethorphan cough syrups with alcohol lead to extreme drowsiness and coordination loss. Avoid entirely.[3]

Diabetes Medications

• Insulin or sulfonylureas (glipizide): Alcohol can trigger hypoglycemia, especially on empty stomach.
  
• Metformin: Increases lactic acidosis risk with heavy drinking.[4][8]
  
  

Heart and Blood Pressure Drugs

• Nitrates (nitroglycerin): Cause severe hypotension and fainting.
  
• Beta-blockers or ACE inhibitors: Amplify dizziness and blood pressure drops.[2][5]
  
  

Other Common Mixes to Avoid

• Adderall (amphetamines): Masks alcohol intoxication, leading to overconsumption.
  
• Statins (Lipitor): Heighten liver strain.
  
• NSAIDs (ibuprofen): Increase stomach bleeding risk.[1][3]
  
  | Category | Key Examples | Main Risks |
  |----------|--------------|------------|
  | Painkillers | Opioids, acetaminophen | Overdose, liver damage |
  | Antibiotics | Metronidazole, tinidazole | Nausea, flushing |
  | Sedatives | Benodiazepines, Ambien | Respiratory failure |
  | Antidepressants | SSRIs, MAOIs | Drowsiness, crisis |
  | Diabetes drugs | Insulin, metformin | Low blood sugar, acidosis |
  
  Always check labels or consult a pharmacist—interactions vary by dose and individual factors like liver health.[1][2]
  
  Sources
  [1]: FDA Drug Safety Communication on Alcohol-Drug Interactions
  [2]: Mayo Clinic: Alcohol and Medication Interactions
  [3]: WebMD: Medications That Interact with Alcohol
  [4]: NIH: Alcohol-Medication Interactions
  [5]: Harvard Health: Alcohol and Pain Relievers
  [6]: American Psychiatric Association Guidelines
  [7]: CDC: Benzodiazepines and Alcohol
  [8]: ADA: Alcohol and Diabetes Meds