dear welcome to healthcaremagic
Herbal drugs has no sideeffects mostly but there is no effectiveness without consulting with the doctor, maintaining of dosage and symptomatic addition should be done.
Ayurveda and sex has intimate relation from its beginning. Ayurvedic herbal preparation are very effective from the early for sexual related problem like erectile dysfunction
, premature ejaculation
, penis size etc
There are lot of drugs available in the market for this, Typically as per written in the text of ayurveda from the time of kamasutra you had to follow the traditional ayurvedic preparation which can help you.
i suggest you consult nearest Ayurvedic physicians for details or write me firstname.lastname@example.org for detail and availability of ayurvedic preparation in you place