Kamagra Oral Jelly Week Pack can be a combination of two drugs: Viagra and Dapoxetine, which usually treat impotence and premature ejaculation.Viagra is a phosphodiesterase type 5 (PDE 5) substance that increases blood flow to the phallus during sexual stimulation. Dapoxetine may be a selective monoamine neurotransmitter uptake agent, increasing the amount of monoamine neurotransmitters in the nerves to increase time to ejaculation and improve ejaculation management.