Source Naturals - L-Arginine Free Form 1000 Mg. 100 Tablets

This stuff really gets the job done. I used to waste a lot of money on expensive nitric oxide pre-workout supplements. Look at the label on almost any of them and you will see the main ingredient is L-Arginine. I am using this to give me a boost for p90x. Did not notice much change for the first couple weeks, but since then there has been a noticeable improvement in endurance and muscle tone. I take 5 pills a day with gatorade for 4 weeks and then take 2 weeks off (mayo clinic website recommends 6 grams per day for four weeks to enhance athletic performance). I also have problems with circulation in my hands and feet and these pills have helped improve that as well. I have not experienced any bad side effects. Great value for the price

Purchased on Amazon for Work out endurance and ENERGY. The energy was very noticeable. Not a buzz but good old fashioned "I feel good, why dont I get something done" I'm told its 4 weeks on and 2 weeks off. In the last few days my wife has given nearly all my bottle away because she loved them so much she wanted her friends (who are all Moms) to at least try it. It really works immediately. The only problem with these pills are instead of a soft capsule they are large pills that hurt my stomach. I have found other brands that have capsules and I will try those next. The benefits make this pill worth taking. Also, a side affect is increased blood-flow. Not a bad thing. Let me know if anyone has any questions. Would be 5 stars for me if the capsules were soft and dissolved quicker. My workaround is dissolving 3 pills in a cup of hot water and drinking that. Not for everyone, tastes bad but it solves the stomach problem.

A good vitamin for those who consume little or no meat or dairy as this is usually where you will find this essential amino acid. However, even those who do often don't get enough.L Arginine:Rids the body of ammoniais necessary for the production of proteinstimulates the release of insulinmakes nitric oxide so it releases blood vesselsThose who take it for alternative benefits claim that L-arginine can benefit:*colds*congestive heart failure*dementia*erectile dysfunction*high blood pressure*intermittent claudication*interstitial cystitis*male infertility*migraines*preeclampsia*sexual dysfunction in womenSome people also use L-arginine to boost the immune system, improve athletic performance, and shorten recovery time after surgery. L-arginine is also used for bodybuildingI actually got it to use during strength training workouts as I'd heard that it helps your body in this regard and I wanted the improved circulation benefit. Although that's a little hard to guage, I do seem to have improved circulation and faster warm-up

not sure, took 3 a day for 3 weeks and didn't notice any difference.since i have a double order,i'll keep taking then and see what happens

I was very pleased to see this product at one-fourth the price of the similar GNC brand. Skeptical because of the price but willing to give it a try for the same reason. I'm very well pleased and will continue to buy this brand. Men especially will feel the benefits quickly of this supplement.