Viagra is a medical prescription used for men to help treat erectile dysfunction, or impotency.Viagra works by increasing the blood flow to the penis, which helps causes an erection. Viagra will not take into effect unless you are sexually stimulated. The main active ingredient found in Viagra is called sildenafil. The dose range of sildenafil found in Viagra can range from 25mg to 100mg per each tablet. The effects of Viagra may vary for each individual. Viagra will start working about 30 minutes after the first initial dose. The duration of how long Viagra will last varies from each individual, but the average time that it may last up to is about 5 hours, which is enough time for sexual activity. The effects of Viagra may start to wear off about 2-3 hours prior to taking it. Before taking Viagra, speak with a medical professional first. Viagra is not meant for everyone and it might not be safe for you. How well Viagra works depends on many different factors in men. These factors may include: age, diet, alcohol intake, dosage amount, health, and interactions with other drugs. Men who are over the age of 65 have found that taking Viagra stays longer in their system. This is because the body’s metabolic system tends to slow down as your age increases. This means that Viagra may have a longer effect if you are over the age of 65. Depending on your diet, Viagra may not work the way it is intended to work. Ingesting a large meal which is high in fat content may delay the time it takes for Viagra to take effect. Taking Viagra while you have an empty stomach may increase the time it takes for Viagra to take effect.
Consuming alcohol actually decreases the blood flow to the penis, making it more difficult to achieve and maintain an erection. Drinking alcohol might increase the chances of getting negative side effects. The higher dose of Viagra you take, the more effective and long-lasting effects you will get. Your doctor knows which dosage amount size is best for you. If you have liver or kidney problems, Viagra may last longer. This happens because it takes your body a long time to break down a tablet of Viagra. Tell your doctor if you have ever experienced any liver or kidney damage. Tell your doctor about any other medicines you may be taking. Taking other drugs can change the way Viagra works and how long the effects may last. Avoid taking medicines such as, antibiotic rifampicin, which is used to treat tuberculosis. If your body normally breaks down a tablet of Viagra, the effects should not last longer than 4 hours. Take Viagra by your doctor’s instructions to avoid possible side effects. Do not take Viagra in smaller or higher amounts, unless told otherwise by your doctor. If you experience a painful erection or an erection that lasts longer than 4 hours, stop using Viagra immediately and contact your doctor. You may be experiencing a serious and dangerous side effect. Viagra is not meant for everyone. Tell your doctor if you are pregnant or plan to become pregnant.
I am self employed. General Practitioner in Melbourne, VIC. My special interest: male reproductive system.