It takes about an hour for Kamagra 50 mg to start working. However, the effects may not last as long as with other ED medications. For some men, the effects of Kamagra 50 mg can last up to four hours. If you're considering taking Kamagra 50 Mg, it's important to know how it works and what other people's experiences have been. The medication is designed to help men with erectile dysfunction, so it's important to know whether or not it will be effective.