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The arginine-citrulline cycle represents a continuous metabolic loop where both ingredients participate in ongoing nitric oxide production

10.1146/annurev.arplant.49.1.249 96 ObaraK.SumiK.FukudaH

Available in the form of an easily soluble powder, ideal for people who avoid tablets

Scientists looking at L-carnitines effects on thyroid health suggested that carnitine was a peripheral antagonist of thyroid hormone activity in some tissues (meaning L-carnitine might prevent the entry of T3 and T4 into cells)

Additionally, inflammatory conditions are also suggested to benefit due to its regenerative and protective properties