What is phosferine?

Answer 1

Phosferine is a herbal supplement containing Cinchona bark extract, sodium benzoate (Preservative), potassium sorbate (Preservative), citric acid, water and coloring. It is marketed for improving your appetite. Cinchona is a genus of South American plants, often used as sources of quinine as an antimalarial medication.

However, as far as I can tell, the FDA has not evaluated the claims of Phosferine as an appetite improver.