Erectile dysfunction is a condition associated with an inability to achieve and maintain an erection resulting in an inability to participate in penetrative sexual intercourse. It is commonly seen in diabetic patients, patients with severe atherosclerosis (narrowing of arteries due to fat deposits), and spinal cord accident patients (paraplegics and quadriplegics)
Champix (Varenicline) from Pfizer, a drug that is claimed to help people quit smoking is currently under the scanner by the MHRA, the UK medicines’ watchdog. It has been claimed that Champix is causing suicidal tendencies in people using it. 839 adverse drug recations were reported and included depressive behavior, mainly in people with previous psychiatric disease.
Champix both stimulates and blocks the nicotinic receptors in the brain. By stimulating the receptors it reduces the cravings and by blocking the receptors it results in a weaker response to people who give in and light up a cigarette. 44% of the users give up smoking after taking Champix twice daily for 12 weeks.