Remove the syringe from the bottle. Condensation with 1-methylpiperazine. Store mixed oral liquid in the refrigerator. Click here for an email preview. Read the full disclosure here.Manufacture and sale of sildenafil citrate drugs known as “generic Viagra” is common in India, where Pfizer’s patent claim does not apply. Trade names include Kamagra (Ajanta . Viagra is available in 3 doses of 25, 50, and mg doses or as single packet doses (5). Whereas, Kamagra comes in doses of 50 or mg for the tablet variant. Kamagra also has an oral jelly variant, which only comes in mg sachets. Typically, your first prescription would be for 50mg tablets and is changed See more. Learn about uses, how it works, and more for Viagra (sildenafil). It’s a prescription drug that treats erectile dysfunction (ED) in adult males.