Tidiacic is a hepatoprotective drug. It is a component of tidiacic arginine.
Tidiacic arginine (trade name Tiadilon) is a 1:1 combination of the amino acid arginine and tidiacic (thiazolidine-2,4-dicarboxylic acid), which acts as a sulfur donor.
In France, its indications and use have been described as "identical to those of silymarin".