There are many claims made in this area of research, but my own experience is that until any natural herbal remedy has been properly tested in clinical trails you should stay well clear of it.
Most recently the is chatter about a group of German researchers working on a plant extract that cures erectile dysfunction which may be available next year! There is only one clinically tested plant extract to-date which is clinically tested and successful for over 80% of all men who take it, that is Butea Superba.
Readily available in pill form under the brand name HealthyED, details of the trials can be found on the internet.
Compared to other tests which indicate Viagra working for around 50% of users Butea Superba with an 84% success rate looks like an attractive alternative to taking prescription drugs.
The plant is widely available throughout Thailand where men wishing to increase their flagging libido can buy the ground down plant in powder form at the general marketplace.
They more often than not use it to cook with or simply add it directly onto their food like a dressing.
The Thai government realizing the profit potential took control of the growing of Butea and now it can only be grown under government license.
Exports are strictly monitored and it would appear HealthyED are the only company in the West of the globe selling the ground down plant extract in pill form.
The evidence in favor of Butea over prescription drugs supplied by your local GP is compelling.
With such high success rates in could be worth a try?