I'm a 51 year old male who has had 2 spinal surgeries. A couple of years ago I noticed that even if I used viagra I would only get a partial errection. I been taking 12 grams of L. Arginine and 100 mg of pycnogenol and what I've noticed is that I get a partial errection but if I start thinking about sex I start producing alot of pre cum and I feel the parasympathetic nerve start to contract as if I want to ejaculate. I masterbate maybe 2 times a week and when I'm masterbating I get maybe 50% erect but I still cum and cum hard. Has anyone else ever experienced this?