title: Timolol eye drops and verapamil--a dangerous combination.
mesh_terms: D001919:Bradycardia / Q000139:chemically induced; D004347:Drug Interactions; D006323:Heart Arrest / Q000139:chemically induced; D006801:Humans; D008297:Male; D008875:Middle Aged; D009883:Ophthalmic Solutions; D011412:Propanolamines / Q000009:adverse effects*; D013999:Timolol / Q000009:adverse effects*; D014700:Verapamil / Q000009:adverse effects*
chemical_list: D009883:Ophthalmic Solutions; D011412:Propanolamines; D013999:Timolol; D014700:Verapamil