Delmadinone acetate (DMA), sold under the brand name Tardak among others, is a progestin and antiandrogen which is used in veterinary medicine to treat androgen-dependent conditions such as benign prostatic hyperplasia.

[1][2][3][4] It must be used with care as it has the potential to cause adrenal insufficiency via inhibition of adrenocorticotropic hormone (ACTH) secretion from the pituitary gland.

[1][8][9] It was marketed by this year in Europe and the United Kingdom under the brand names Tardak and Zenadrex.

[1][2][3][4] DMA is most commonly sold as Tardak, but has also been marketed under a variety of other brand names including Delmate, Estrex, Tardastren, Tardastrex, Vetadinon, and Zenadrex.

[2][4] It is specifically marketed in the United Kingdom, France, Belgium, Germany, Austria, Switzerland, the Netherlands, Finland, Australia, and New Zealand.