Dear Merc: Thanks for the response. I was also wondering why nobody was responding.
Background Stuff: I started out looking for things that would get me back to feeling like I had, when I was a lot younger and could get really hard. I researched a lot, and talked to my urologist a lot, and tried a lot of worthless things in the way of supps, and vitamins etc. I found a lot of info on the internet about various impotency drugs, and all their side effects. I began to try things for myself, and to weed out the things that did not work, and keep the things that seemed to have a beneficial effect and that supported the necessary functions for the penis to perform to the max. I tried all the V, C, and L drugs as they came out, along with caverject and apomorphine. V still works the best, but lasts the shortest time. Finding the Rx Yohimbine was a major advance in my progress, because as you age your ability to produce hardness with blood pressure declines and the Y offsets that, up to a point, but enough to really help with the hardness. I did a lot of reading and research in medical books about the penis and the prostate, and the whole blood and nervous system that operates the penis. I investigated the brain functions that support the libido and the physical penis function, and things that effect those brain functions. After all this work and personal experimentation, I developed the regimen that I have explained in the earlier message posting.
When I started out, yes, I was cautious and used smaller amounts of these things to "sneak" up on the correct amount to produce the effect that I wanted and to learn about the side effects and my body responses to the compounds.
What I learned was this:
The Arginine compounds work almost like, and almost as well, as the V, C or L drugs, however, using them together is much, much better. The A seems to "load" the system for a higher level response, but is not as specific for hardness as the Rx drugs. The A works best as a mix of the normal A and the L-A isomer. It also works best accompanied by Cystine and Glutamine and Taurine, in smaller quantities.
The Tagamet, or generic name Cemetidine, has a wonderfully enhancing effect on the performance of the V and the C drugs, but less so on the C drug. You can check the relative effect by researching the side effects, or drug interaction info, for each of the erection drugs. The best effect for me seemed to come from 400mg, or two 200mg tabs, along with V. I never have had any noticeable side effect from this, except the production of a more intense blue vision side effect from the V. No blue vision with C or L.
As little as 25mg of V will do a very good job, but it does not seem to produce any more side effects or last any longer to take more. All sizes of the V pills cost the same, so buy the 100mg and break them down into pieces for your use. I usually use a 1/2 tab, or 50mg. Likewise, C comes in 40mg tabs and a 1/2 tab is plenty to do the job, so break them in two for use.
A Little caffeine in the system works to further adjust the blood pressure upward and make all the other components work a little better for really hard and long lasting effects.
A little extra dopamine in the system also seems to help. I use Mucuna Pruriens that has about 20% dopamine content and take 2 caps along with the regimen for the extra brain chemical support and libido enhancement.
Each of these regimen components seems to have a certain threshold value that you have to find for yourself. Before reaching that T value, you will have almost no effects, and afteward you will get the effect you want, and if you add more you will not further enhance the effects, but just waste compound and money.
Y is a paradoxical compound. If you take some everyday, you get accustomed to it, and it seems to raise the libido and increase the penis sensitivity some. If you only take it occasionally, it has an immediate marked effect on the blood pressure and the body temperature, very much like Niacin flushing effects. If you use it daily and then add some for the regimen, it still works better, but the immediate response is more muted. It is actually very inexpensive as a Rx drug because it is old and not patented by anyone. The GNC Yohimbine Active supp is the next best, but produces significantly greater flushing, temperature elevation, and nasal congestion.
I am almost 70 age, about 225 lbs., pretty good shape, no heart problems, no vascular problems, normal blood pressure, normal cholesterol measurements. The amounts of each that I included in the regimen are what I use. I have been doing this for about 2 years, and other than the transient side effects, I have had no ill effects from this regimen. It has made a major improvement in my physical performance every time I have done it. It has made a major improvement in my psychological confidence to know that I can perform like a 30 year old, whenever I want to do the regimen. I certainly don't do it everyday, and not for every Penis Enlargement workout. I sort of reserve this for times when I want to have a superior experience from the Penis Enlargement workout or for great feeling sex.
I can't guarantee you anything about the effects you might have, or anything about whether this would be safe for you to do. You will have to find your own best level of all, or any, of these things. If you do find your own best level of them, I believe you will experience something that is pretty good, and better than usual for your Penis Enlargement workouts, and for sex, even it is only with yourself.
All the best to you. I will be happy to answer questions and comment on this some more, if you want me to. B
along with 3-4 grams of l-arginine just before my Penis Enlargement workouts. This was while I was clamping and it was very beneficial in keeping erection strength for about 20 min. Bear in mind that clamping is much more stressful so I don't know how long it would last otherwise. I've never had erection problems in normal activity so I've never used it otherwise. 
