I was often tired and worn. On the net I came across L-arginine 3600 of Biomenta and have ordered two doses. After 4 weeks on the desired effect ceased, I was able to walk with the dog again, without this constant fatigue in the legs. I'm getting out of half the antihypertensive tablets. What did surprise me, however, most common being, I can see again without glasses into the distance. Whether that is also connected with the L-arginine, but I can not say. I suspect it but, because it should bring better circulation. Anyway, I'm very fond of L-arginine 3600 mg