Viagra Connect, while also containing sildenafil citrate as its active ingredient, is only sold in the standard dose of 50mg. In the European Union, Canada, and the United States, Kamagra is not considered a licensed treatment and, therefore, cannot be bought with a prescription through a verified and accredited healthcare provider. Post navigation. This medication is taken with or without food an hour before sex. Kamagra Gold tablets for severe ED stages 4. Men who may feel a lot of shame with erectile dysfunction or men who do not want to or cannot go to a healthcare provider are more likely to lean towards purchasing Kamagra vs. Sildenafil is in Viagra, Kamagra the real one and even sold as a generic medication predictably called Generic Sildenafil.Viagra and Kamagra tablets: mg of Sildenafil: 1. Viagra tablets. 2. Kamagra tablets. 3. Kamagra Gold tablets (for severe ED stages) 4. Kamagra Chewable (flavored tablets) .  · Brand names: Revatio, Viagra Drug classes: Agents for pulmonary hypertension, Impotence agents. Medically reviewed by Kaci Durbin, MD. Last updated . Sildenafil (Viagra). This medicine works best when you take it on an empty stomach an hour before sex. The body takes longer to absorb it after a high-fat meal or .