title: Dihydrotachysterol
text: # Dihydrotachysterol
  
  Dihydrotachysterol (DHT) is a synthetic vitamin D analog activated in the liver that does not require renal hydroxylation like vitamin $D_2$ (ergocalciferol) and vitamin $D_3$ (cholecalciferol). DHT has a rapid onset of action (2 hours), a shorter half-life, and a greater effect on mineralization of bone salts than does vitamin D.
  
  