Kisspeptin-10, human is an effective vasoconstrictor and inhibitor of angiogenesis.

Colocynthin is a cucurbitane triterpenoid glycoside that can be isolated from the bitter apple (Citrullus colocynthis).

N-Acetyl-L-phenylalanine is an essential amino acid produced for medical feed and nutritional applications. It appears in large amount in urine of patients with phenylketonuria which is a human genetic disorder due to the lack of phenylalanine hydroxylase the enzyme necessary to metabolize phenylalanine to tyrosine.