I would love to know about the herbal products
Always an interesting question. I am a retired doctor with severe ED that responded to nothing including direct injections of Caverject. So I now have an implant. But I have searched everything on ED for years. BTW, I will not debate anyone on my opinions expressed here. Do your own Google research on GOOD reliable medical and clinical sites if you wish! Oh, and please excuse my bad 2 finger typing!
First: silendafil is generic Viagara. May not work for all men. Do NOT use if you use nitrates for angina, Ketoconazol and others for fungal infections, erythromycin and other antibiotics in the same class, or cimetadine (Tagamet) for acid stomach and heartburn.
I would ONLY buy at a known pharmacy, NEVER on the street! You will not know what you are getting!
Herbals: Over the counter medicines are not regulated in the US at all. A few Europen countries do much better with regulation and testing. They thus do NOT have to submit evidence of effectiveness and safety or maximum safe dose to take. As with Viagara, they may work for some men but probably not for most. There is very litlle clnical evidence from good reliable testing that any ED herbals work or are safe.
ROBUST is a natural herbal product made from several flowers etc. And the claims made on the label are not supported by any research. There IS some evidence from one placebo controlled trial that it may work for ED caused by depression, which says nothing about other causes of ED.
ARGINMAX: a mix of arginine, ginko, and Korean red ginseng. One study from Hawaii showed it worked pretty well in 75% of men when compared to placebo. This is probably due to the L-arginine, since another study that gave 5,000 mg a day for 6 weeks found it worked OK in 37% of men. BUT there are other studies of L-arginine showing no effect.
KOREAN RED GINSENG (note the word RED!): which has been steamed and heat dried. One study gave 1,800 mg a day showed effectiveness in 60% of 90 patients but was not completely good for ED in all. Unlike most meds that increase amount or sensitivity to nitric oxide, probably works on increasing blood flow. Most studies do show some effectiveness. What medically is called a Systematic Review that looked at many studies stated that there is "suggestive evidence" that it works.
IMPEOUS MAN: Claims it can increase the size of the penis. NO product ever studied, including this one can EVER do that permanently. It also claims to stimulate a growth gland in turn regenerates the Corpus Cavernosum tissue. What compete HOGWASH! I could not find ANY site that lists the ingredients in Impeous Man, nor ANY clinical studies. Would I take it. No. Up to you.
There are others I know of but time for sleep. If you have questions respond here.