Ferrum pyrophosphoricum

Natural History.
      Ferri pyrophosphate.
      Pyrophosphate of Iron. A scale preparation containing 55 per cent. of Pyrophosphate of Iron (Fe2 P2 O7) combined with Citrate of Soda. Solutions and triturations.

Clinical.
      Brain, congestion of.
      Headache.
      Tarsal cysts.

Characteristics.
      This preparation has not been proved, but it has been used clinically in low attenuations in cases of brain congestion and congestive headache, following great losses of blood.
      If Fe-p. fails to remove tarsal cysts, Cooper says give Ferr-py.