Problems with the electrical pathways that control the pumping action of the heart (heart block). He did not concede that the evidence pointed ineluctably to a single conspiracy. Headache, nightmares, and insomnia have also been reported, but a drug relationship is not clear. For breast health or breast cancer information, please call the Breast Care Helpline: 1-877 GO KOMEN (1-877- 465- 6636) |Â helpline@komen. Hypotension was more likely to occur if the calcium antagonist were a dihydropyridine derivative, eg, nifedipine, while left ventricular failure and AV conduction disturbances, including complete heart block, were more likely to occur with either verapamil or diltiazem. Otherwise, oral contraceptives may help prevent circulation and heart disease if you are healthy and do not smoke. |