Each Folnx tablet contains pyridoxal-5-phosphate, or vitamin B-6; mecabalamin; levomefolate calcium; calcium phosphate dibasic; and hypromellose, according to Aegis Shield. Additional ingredients include FD&C Red No. 40, FD&C Blue No. 2, triacetin, titanium dioxide and maltodextrin, as well as polyethylene glycol, magnesium stearate, polydextrose, microcrystalline cellulose and carnauba wax.
Folnx, categorized as a medical food, is the generic version of the Metanx formulation, according to Breckenridge Pharmaceutical Inc. Each Metanx capsule contains 3 milligrams of L-methylfolate calcium in the form of Metafolin, 35 milligrams of pyridoxal-5-phosphate and 2 milligrams of methylcobalamin, according to Pamlab LLC. These ingredients are the natural, active forms of the common B-vitamins folic acid, vitamin B-6 and vitamin B-12. One of the active ingredients, L-methylfolate, is the naturally occurring form of folate that the body uses.
In 2012, Breckenridge Pharmaceutical Inc., entered into a joint venture with Pamlab LLC, reports Globe Newswire. Under this joint venture, Breckenridge Pharmaceutical Inc., has permission to market and distribute authorized generic versions of the other company's medical food products that contain the ingredient Metafolin, one of the ingredients in Metanx. Metanx and Foltanx are medical foods that treat certain symptoms of diabetic peripheral neuropathy. Specifically, the drugs find use in the dietary management of endothelial dysfunction.