Is it safe to take Lipitor with MAOIs?
No, Lipitor (atorvastatin) and monoamine oxidase inhibitors (MAOIs) should not be taken together due to a major drug interaction that can cause dangerously low blood pressure.[1] Atorvastatin, a statin for lowering cholesterol, is metabolized by the CYP3A4 enzyme, while MAOIs like phenelzine or selegiline inhibit this pathway, leading to elevated atorvastatin levels and increased risk of myopathy (muscle damage), rhabdomyolysis, and hypotension.[2][3]
What happens if you mix them anyway?
Hypotension can occur rapidly, causing dizziness, fainting, or shock. Severe cases may involve rhabdomyolysis, with symptoms like muscle pain, weakness, dark urine, and kidney failure. Emergency medical attention is required if these develop.[1][4]
Which MAOIs pose the biggest risk?
All MAOIs carry this risk, but non-selective irreversible ones like phenelzine (Nardil) and tranylcypromine (Parnate) are highest due to stronger CYP3A4 inhibition. Reversible types like moclobemide have lower risk but still require caution.[2][5]
What do doctors recommend as alternatives?
Switch statins to those less dependent on CYP3A4, like pravastatin or rosuvastatin, which have fewer interactions with MAOIs. Monitor closely if combination is unavoidable, starting with low doses and checking CK levels and blood pressure frequently.[3][6]
Are there patient reports or studies on this?
Clinical data is limited to case reports and pharmacokinetic studies showing 2-5 fold atorvastatin level increases with strong CYP3A4 inhibitors. Patient forums report dizziness and fatigue, but no large trials exist due to the interaction's severity.[4][7]
When can you safely restart after stopping an MAOI?
Wait at least 2 weeks after discontinuing an irreversible MAOI (longer for some like phenelzine) before starting Lipitor, as MAOI effects persist. Consult a prescriber for individualized timing based on the specific MAOI.[5]
[1]: Drugs.com - Atorvastatin and MAOI Interaction
[2]: Medscape - Atorvastatin Drug Interactions
[3]: FDA Label - Lipitor (Atorvastatin)
[4]: PubMed - Statin-MAOI Interactions Review
[5]: UpToDate - MAOI Drug Interactions
[6]: American Heart Association - Statin Alternatives
[7]: Liverpool Drug Interactions Database