Saptamrit Lauh is an Ayurvedic medicine in tablet or powder form.
Uses:
It can be used as  a source of Iron, since it contains Iron calx (Bhasma) as ingredient.
It is used in the treatment of anorexia, vomiting, vision related eye disorders, gastritis, fever, tiredness, fatigue, difficulty in urination, bloating, edema and inflammation.
Effect on Tridosha – Balances Pitta.
dosage:
250 mg – 500 mg once or twice a day before or after food or as directed by Ayurvedic doctor. It is usually administered along with  honey, ghee, milk.
Saptamrit Loha ingredients:
10 g fine powder of each of
Yashti – Licorice – Glycyrrhiza glabra – 10 g
Haritaki – Chebulic Myrobalan fruit rind – Terminalia chebula – 3.33 g
Vibhitaki – Belliric Myrobalan fruit rind – Terminalia bellirica – 3.33 g
Amalaki – Indian gooseberry fruit – Emblica officinalis Gaertn.  – 3.33 g
Loha Bhasma – Bhasma prepared from Iron – 10 g
Reference: Bhaishajya Ratnavali.