Drugs A to Z
Choose a medicine, supplement or substance to see everything it interacts with in our database, sorted by severity, with the FDA label source for each warning.
A
Acetaminophen (Tylenol)Acyclovir (Zovirax)Albuterol (ProAir, Ventolin)Alcohol (beer, wine)Allopurinol (Zyloprim)Alprazolam (Xanax)Amitriptyline (Elavil)Amlodipine (Norvasc)Amoxicillin (Amoxil)Amoxicillin-clavulanate (Augmentin)Amphetamine salts (Adderall)Apixaban (Eliquis)Aripiprazole (Abilify)AshwagandhaAspirin (Bayer, Ecotrin)Atenolol (Tenormin)Atorvastatin (Lipitor)Azithromycin (Zithromax, Z-Pak)
B
Baclofen (Lioresal)Birth control pills (combined oral contraceptives)Bismuth subsalicylate (Pepto-Bismol)Buprenorphine-naloxone (Suboxone)Bupropion (Wellbutrin, Zyban)Buspirone (Buspar)
C
Caffeine (coffee, energy drinks)Calcium carbonate (Tums)Cannabis (marijuana, THC)Carvedilol (Coreg)Celecoxib (Celebrex)Cephalexin (Keflex)Cetirizine (Zyrtec)Ciprofloxacin (Cipro)Citalopram (Celexa)Clindamycin (Cleocin)Clonazepam (Klonopin)Clonidine (Catapres)Clopidogrel (Plavix)Codeine (Tylenol with Codeine)Colchicine (Colcrys, Mitigare)CreatineCyclobenzaprine (Flexeril)
D
DayQuil (Vicks DayQuil)Dextromethorphan (Robitussin DM, Delsym)Diazepam (Valium)Diclofenac (Voltaren, Cataflam)Digoxin (Lanoxin)Diphenhydramine (Benadryl, ZzzQuil)Doxycycline (Vibramycin, Doryx)Doxylamine (Unisom SleepTabs)Duloxetine (Cymbalta)
E
F
Famotidine (Pepcid)Fexofenadine (Allegra)Finasteride (Proscar, Propecia)Fish oil (omega-3)Fluconazole (Diflucan)Fluoxetine (Prozac)Furosemide (Lasix)
G
H
Hydrochlorothiazide (HCTZ)Hydrocodone (Norco, Vicodin)Hydroxychloroquine (Plaquenil)Hydroxyzine (Atarax, Vistaril)
I
Ibuprofen (Advil, Motrin)Insulin (Lantus, Humalog)Iron supplements (ferrous sulfate)Isotretinoin (Accutane, Absorica)
K
L
Lamotrigine (Lamictal)Levetiracetam (Keppra)Levofloxacin (Levaquin)Levothyroxine (Synthroid, Levoxyl)Lisdexamfetamine (Vyvanse)Lisinopril (Zestril, Prinivil)Lithium (Lithobid)Loperamide (Imodium)Loratadine (Claritin)Lorazepam (Ativan)Losartan (Cozaar)
M
MagnesiumMeclizine (Antivert, Bonine)MelatoninMeloxicam (Mobic)Metformin (Glucophage)Methocarbamol (Robaxin)Methotrexate (Trexall, Otrexup)Methylphenidate (Ritalin, Concerta)Methylprednisolone (Medrol)Metoprolol (Lopressor, Toprol XL)Metronidazole (Flagyl)Mirtazapine (Remeron)Montelukast (Singulair)Morphine (MS Contin)
N
Naltrexone (Vivitrol, ReVia)Naproxen (Aleve)Nicotine (cigarettes, vapes)Nitrofurantoin (Macrobid, Macrodantin)NyQuil (Vicks NyQuil)
O
P
Pantoprazole (Protonix)Paroxetine (Paxil)PaxlovidPhentermine (Adipex-P)Phenylephrine (Sudafed PE)Potassium supplements (potassium chloride)Pravastatin (Pravachol)PrednisonePregabalin (Lyrica)ProbioticsPromethazine (Phenergan)Propranolol (Inderal)Pseudoephedrine (Sudafed)
Q
R
S
Semaglutide (Ozempic, Wegovy)Sertraline (Zoloft)Sildenafil (Viagra)Simvastatin (Zocor)Spironolactone (Aldactone)St. John's wortSulfamethoxazole-trimethoprim (Bactrim, Septra)Sumatriptan (Imitrex)
T
Tadalafil (Cialis)Tamsulosin (Flomax)Tirzepatide (Mounjaro, Zepbound)Tizanidine (Zanaflex)Topiramate (Topamax)Tramadol (Ultram)Trazodone (Desyrel)Turmeric (curcumin)