This week the US Food and Drug Administration (FDA) issued several warning letters similar to the one below, to food business operators marketing food supplements containing methylsynephrine.
“This letter concerns your product XXX which is labeled and/or offered for sale as a dietary supplement. The ingredient list on your product labeling declares methylsynephrine as a dietary ingredient. This ingredient is also called, among other names, Oxilofrine and p-hydroxyephedrine (hereinafter referred to as methylsynephrine).
Under section 201(ff)(1) of the Federal Food, Drug, and Cosmetic Act (the Act) [21 U.S.C. § 321(ff)(1)], a dietary ingredient is a vitamin; mineral; herb or other botanical; amino acid; dietary substance for use by man to supplement the diet by increasing the total dietary intake; or a concentrate, metabolite, constituent, extract, or combination of the preceding substances. Methylsynephrine is not a vitamin, a mineral, an herb or other botanical, or an amino acid. In addition, according to our research, methylsynephrine is not a dietary substance for use by man to supplement the diet by increasing the total dietary intake. Finally, methylsynephrine is not a concentrate, metabolite, constituent, extract, or combination of a vitamin; mineral; herb or other botanical; amino acid; or dietary substance for use by man to supplement the diet by increasing the total dietary intake. Accordingly, methylsynephrine is not a dietary ingredient within the definition set forth in section 201(ff)(1) of the Act. Declaring methylsynephrine in your product labeling as a dietary ingredient causes your products marketed as dietary supplements to be misbranded under section 403(a)(1) of the Act [21 U.S.C. § 343(a)(1)] in that the labeling is false or misleading in any particular.
We request that you take prompt action to correct the violation cited above, as well as any other violations associated with your XXX product or other products marketed by your firm that list methylsynephrine as a dietary ingredient in the labeling. It is your responsibility to ensure that your firm complies with all requirements of federal law and FDA regulations.
Failure to immediately cease distribution of your XXX product, and any other products you market that list methylsynephrine as a dietary ingredient in the labeling could result in enforcement action by FDA without further notice. Sections 302 and 304 of the Act provide for seizure of violative products and injunction against the manufacturers and distributors of violative products [21 U.S.C. §§ 332 and 334].
Additionally, methylsynephrine is not approved as a food additive or prior sanctioned for use in dietary supplements. Further, FDA’s review of this substance does not identify a basis to conclude that the substance is GRAS [Generally Recognised As Safe] for use in food. If you contend that this substance is GRAS for use in food, please provide your basis for concluding that methylsynephrine is GRAS for use in dietary supplements, including supporting data or other documentation.”
Read more here.