Drugs that should not be co-administered with ritonavir/Norvir^tm

Contraindicated due to risks of arrhythmias ("irregularity or loss of rhythm, particularly the heartbeat"), hematologic ("blood") abnormalities, seizures or other potentially serious adverse affects:

1. amiodarone (Cordarone^tm)
2. astemizole (Hismanal^tm)
3. bepridil (Vascor^tm)
4. bupropion (Wellbutrin^tm)
5. cisapride (Propulsid^tm)
6. clozapine (Clozaril^tm)
7. encainide (Enkaid^tm)
8. flecainide (Tambocor^tm)
9. meperidine (Demerol^tm, Mepergan^tm, Meperidine^tm)
10. piroxicam (Feldene^tm)
11. propafenone (Rythmol^tm)
12. propoxyphene (Darvon^tm, Propoxyphene^tm, Wygesic^tm)
13. quinidine (Duraquin^tm, Quinaglute^tm, Quinalan^tm, Quinidine^tm)
14. rifabutin (Mycobutin^tm) - for Mycobacterium avium complex (MAC) prophylaxis
15. terfenadine (Seldane^tm)

Contraindicated due to potential for extreme sedation and respiratory depression:

1. alprazolam (Xanax^tm)
2. clorazepate (Clorazepate^tm, Gen-XENE^tm, Tranxene^tm)
3. diazepam (Diazepam^tm, Valium^tm, Valrelease^tm)
4. estazolam (ProSom^tm)
5. flurazepam (Dalmane^tm, Flurazepam^tm)
6. midazolam (Versed^tm)
7. triazolam (Halcion^tm)
8. zolpidem (Ambien^tm)