Men use kamagra 100mg to treat erectile dysfunction. This medication is a very helpful and successful treatment for impotence. Sildenafil, an ingredient in this medication, aids in giving men a powerful erection during sexual activity. To enable you to have sex with your partner, take this medication one hour prior to sexual activity. This medication can be taken with water, but avoid breaking or chewing the tablet. This medication can be taken either before or after a meal. Use this medication just once every 24 hours.