Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. If you are taking Viagra and experience temporary decrease or permanent loss of vision, stop taking Viagra and immediately consult your doctor. If you are planning pregnancy, become pregnant, or think you may be pregnant, talk to your doctor about the benefits and risks of using sildenafil. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional. Always ask your health care professional for complete information about this product and your specific health needs. Do not drink alcohol while taking Viagra as it can decrease the ability to get and maintain an erection.Low libido (reduced sex drive) can strike men at any age, but it becomes more common as a man gets older. It may be caused by: psychological factors, such as child abuse, . Buying drugs over the internet. If you buy drugs on line, you may be putting your health at serious risk. This is especially true if you order prescription drugs without being . The medication Viagra is manufactured by Pfizer Canada Inc and it comes in 25 mg, 50 mg and mg dosage forms in a blister pack of 4 tablets. We are supplying brand Viagra .