Sorry this is a lot of information for one little thing: Starting here under "Quit Jacking off To Internet Porn" http://anabolicmen.com/how-to-increase-androgen-receptors/ "Masturbation to the point of sexual exhaustion has been seen in multiple studies to block androgen receptors so that only estrogen can enter them. One study even found out that it may take up to 15 days for that receptor to return into its normal state. (more here with links to studies.) Needless to say that if you have been a keen masturbator for your whole life (like most guys are) then you probably don’t even know what it feels like when your androgen receptors function properly." Which leads to this: http://anabolicmen.com/how-internet-porn-makes-you-less-of-a-man/ See "Porn Reduces Testosterone and Androgen Receptor activity" With that in mind, let's assume all of that is accurate. Throughout some research lately I learned more about amino acids, vitamins, and hormones. This led me to one particular amino acid, L-Carnatine which is talked about in "how to increase androgen receptors." Except in this article he talks about Acetyl-L-Carnitine, which is the wrong form of L-Carnatine. What you want is PLCAR or LCLT. ALCAR - Acetyl-L-Carnitine - Helps the brain with memory and mental clarity. This is not the kind you want for this purpose (although wouldn't be bad to take in addition anyway.) LCLT - L-Carnatine L-tartrate - Basically plain L-Carnatine that's not as bioavailable in this form. The body needs to convert it to to use it. PLCAR - A more bioavailable form which helps your androgen receptors where it matters, sexual function. PLCAR is patented and therefore more expensive, so I also got LCLT because it's cheap and I've read that it's also good for sexual function. I actaully have found conflicting claims. So basically I took both, the LCLT to supplement my PLCAR use. At bed time, I took the following: 50mg of DHEA - Prehormone to testosterone production 4000IU of Vitamin D3 - Vitamin D3 is an aromatase blocker. Aromatase is the enzyme that converts testosterone to estrogen in men. 5000mg of creatine - Creatine is one of many things that should help support testosterone production. 1500mg of PLCAR + 1500mg of LCLT (to total 3g of L-Carnatine.) This is in addition to my morning vitamins/suppliments of: Multivitamin (GNC MegaMan Sport,) 2000IU of D3, 1000IU B-12, Fish Oil for Omega-3, 1000mcg of chromium picolinate, 25mg additional zinc + 2mg additional copper (addition to what's in the multi.) *Note, that 6000IU of D3 per day total. The upper safe limit is about 40,000IU per week. I also take about 3000mg of L-Arginine daily (at least lately) which helps maintain erections. Result: Initial day I had reduced libido (may have been nothing but coincidence.) By day 3 I was very very horny and had trouble keeping my erection down. Why? I speculate that the the L-Carnatine may have gotten in there and unblocked/reset androgen receptors possibly taken over by estrogen as well as increased receptors. All of my bioavalable testosterone bound to those receptors lowering my free Testosterone initially (I read that you can have a temporary drop, initially.) With Estrogen blocking and increased testosterone production, my free testosterone eventually came back up and was able to affect androgen receptors in my sexual areas. End result, testosterone binding with androgen receptors the way they should. I dunno, it's completely a theory. I guess I'm just putting this out there for guys that are struggling with libido or erection problems as maybe something to try. I did this experiment coming out of 2 months of using flaxseed oil for Omega 3-6-9 and suffering libido problems. Even Cialis wasn't working and I got really freaked out. One day I read that Flaxseed has 3X more phytoestrogens than soy and I realized that maybe I had been flooding my body with phytoestrogens, thus taking over all of my androgen receptors with estrogen killing my buzz. I'm not even sure that all of the phytoestrogens in flaxseed makes it into the oil, but my performance seemed to directly correlate with use of it. I since switched to fish oil. I need Omega-3 for dry eyes. I got my PLCAR on Amazon: http://www.amazon.com/gp/product/B005IHO9V6 I got my LCLT at PipingRock.com http://www.pipingrock.com/l-carnitine/l-carnitine-500-mg-3762 D3 I got at Costco. Creatine and DHEA I got at GNC. You really don't need the DHEA, especially if you're young, or Creatine (not even sure creatine does anything.) I'm over 40 so my DHEA levels are probably already lower. If you want to do this, just give LCLT or PLCAR (and nothing else in particular) a shot for 5 days and see if it helps. Either that or do a little Google research on it and see if you think it'll help. D3 is cheap and is supposed to naturally lower estrogen (though I don't know how much) so I don't think it hurts to take for a few days. I do about 6000IU and I've read that as high as 10,000IU per day has no known side effects. Either way make sure you're getting your daily vitamins so you're not deficient somewhere else. You can also read this (for example) on maintaining testosterone levels: http://www.poliquingroup.com/ArticlesMultimedia/Articles/Article/934/Five_Simple_Ways_to_Raise_Testosterone_Levels_for_.aspx Anyone else ever tried L-Carnatine? Am I experiencing nothing but a placebo?