According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety. They may also consider any potential drug interactions or underlying health conditions that could affect its safety or effectiveness. It’s available in 50 mg, mg, and mg tablets. Other conditions that may disqualify you from an ED prescription include a history of stroke, kidney or liver disease, cancer, diabetes, or a bleeding disorder. It is important to consult with a healthcare professional before starting this medication if you have any of the following conditions: Heart disease: Generic Viagra can increase heart rate and blood pressure, so individuals with pre-existing heart conditions should be cautious. Higher doses tend to have longer-lasting effects compared to lower doses. Importance of Medical Guidance It cannot be stressed enough that seeking medical guidance is crucial.Many online companies claim to sell Viagra without a prescription, but this is illegal. What many of these sites actually sell is counterfeit Viagra. It is worth noting that these kinds of. In fact, in some countries, generic Viagra is available without a prescription, making it even more accessible to those in need. Generic viagra is available in various strengths, . Generic Viagra (sildenafil) is an alternative to the branded Viagra drug that can be used for treating erectile dysfunction (ED). It’s now sold by many manufacturers, including online.