yes, there are some natural herbs u could take ... or you could do YOGA and perform other techniques on the organs ...as taught by TANTRIC SEX or KAMASUTRA ...but again , whether u take medicinal pills, a good diet (foods), or any other natural remedies or herbs ....seeing a doctor is a good thing .........sometimes these things are related to other serious illness in the body .... and it could be something else than the performance or appetite for sex issues ....if are putting this down for fun, its another story..but if u are seriousely being affected by this, do see a doctor ...could be anything like problem with testicles, prostrate cancer, effects of taking other drugs ...or some other problems in overall health.