Histidine (abbreviated as His or H) is an alpha-amino acid. The L-isomer is one of the 22 proteinogenic amino acids i.e. the building blocks of proteins.

The fruit of Helicteres isora.

Rubrofusarin is an orange polyketide pigment from Fusarium graminearum. Rubrofusarin is also an active ingredient of the Cassia species and ameliorates chronic restraint stress (CRS) -induced depressive symptoms through PI3K/Akt signaling. Rubrofusarin has anticancer, antibacterial, and antioxidant effects.