Drug Uses & More Vigora is a generic version of Viagra. It has the same active ingredients as Viagra and is equally effective in curing ED. Usage Information for Vigora Ask your doctor for detailed instructions on using Vigora. On the other hand, you can always refer the patient information booklet which contains professional instructions regarding medication usage. Vigora is absorbed into the body depending on ones health. So, the time often differs in different people. Under normal circumstances, it is most effective when taken around 15 to 30 minutes before you plan to commence sexual activity. The effects last for up to 4 hours. So you can have multiple love making sessions. The medication is also available in two different dosage strengths. Dosage Missed? Important Information Vigora is taken only as and when required. It is not to be used every day as a regular therapy. So, the problem of a missed dose does not arise. If you accidentally missed to take the medication prior to having sex, then you can take it as soon as you remember it. But then you will have to wait for the stipulated amount of time for Vigora to be absorbed by the body and start to take effect. Storing Vigora We recommend storing your medications at room temperature (59 and 86 degrees F) in its original container. Keep it away from excessive heat, moisture or light. Protect it from kids and pets. I think that I overdosed. What should I do? Seek emergency medical care if you suspect an overdose. Contact the nearest poison control center immediately. Some of the possible symptoms are.