xpin2winx
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I hate taking caffeine in the products i take such as superpump 250 and shock therapy and i found out that L-arginine can help me get good pumps without the caffeine. If I were to start taking l-arginine do i take it preworkout to get the pumps i want because the research i read online says to take it post because pre might be harmful. Can someone tell me if arginine works or when to take it?