Formerly known as Bh4. Pteridin-4 contains important enzyme co-factors that are naturally present in a number of foods, including mammalian breast milk and royal jelly. This product is free of soy, yeast, gluten and other common allergens.
Vitamin C (as ascorbic acid) 10 mg,
Tetrahydrobiopterin (a stable form of the physiologic agent, biopterin) 2.5 mg.
Other ingredients: Sucrose, Gelatin, L-Leucine.
Take capsules as directed by physician.
