Synephrine tartrateProduct ingredient for Synephrine

Synephrine, also referred to as, p-synephrine, is naturally occurring alkaloid. It is present in approved drug products as neo-synephrine, its m-substituted analog. p-synephrine and m-synephrine are known for their longer acting adrenergic effects compared to norepinephrine.

The similarity of naming between m-synephrine and the unsubstituted form, synephrine, is a source of some confusion however m-synephrine refers to a related drug more commonly known as phenylephrine. While the compounds share some chemical and pharmacological similarities, they are in fact distinct chemical entities.