Trometamol hydrochloride (Tromethamine hydrochloride) is a biologically inert amino alcohol of low toxicity, which buffers carbon dioxide and acids in vitro and in vivo.

Thymus peptide C, a hormonal drug derived from the thymus glands of young calves, acts as a substitute for the physiological functions of the thymus.

Tiaramide hydrochloride is an anti-inflammatory drug that inhibits the action of mediators released from mast cells and has direct smooth muscle relaxant properties.