Causes of low blood pressure
pressure, including: All blood pressure medicines. These include diuretics, alpha blockers and beta blockers. Examples of diuretics are furosemide (Lasix, Furoscix) and hydrochlorothiazide (Microzide). Alpha blockers include prazosin (Minipress). Some beta blockers are atenolol (Tenormin) and propranolol (Inderal LA, Innopran XL, others). Medicines for Parkinson's disease, such as pramipexole (Mirapex ER) and medicines that contain levodopa (Dhivy, Duopa, others). Certain types of depression medicine called tricyclic antidepressants, including doxepin (Silenor) and imipramine (Tofranil). Medicines for erectile dysfunction, including sildenafil (Revatio, Viagra) or tadalafil (Adcirca, Alyq, others), especially when taken with the heart medicine nitroglycerin (Nitrostat, Nitro-Dur, others).