Dhatri Lauha is used for indigestion, hyperacidity, jaundice and reduces pitta. 
Indications:

1. Parinamasula (Duodenal ulcer)
   
2. Amlapitta (Hyperacidity)
3. Ajirna (Dyspepsia or indigestion; caused by irregular eating habits)
4. Kamala (Demulcent and cooling)

Ingredients:
Amalaki (Emblica officinalis)
Lauha bhasma (Calcinated and purified iron)
Madhuyasti (Glycrrihiza glabra)
Guduci (Tinospora cordifolia)
Dasamula (Compound of 10 barks, laghu panchumal, barhit panchmula)
Dosage:
Take 1/2  to 1 gm.