Nevertheless, PPAP HCl differs structurally from phenylpiracetam as a result of addition of a hydrazide group, which can produce differences in its potency, period of action, or effects. A (rare) "variant sort" of phenylketonuria called hyperphenylalaninemia is caused by the inability to synthesize a cofactor named tetrahydrobiopterin, which may be https://phenylpiracetambuy28169.wikiconversation.com/6875865/top_latest_five_unifiram_urban_news