410 SALTS OF THE HEAVY METALS 



FERRI VALERAS — FERRIC VALERIANATE 



This is the ferric salt of valerianic acid. It may be employed 

 along with the other valerianates v^hen a hematinic action is desired. 

 The valerianates are not active drugs. See page 158. 



SCALE PREPARATIONS OF IRON 



These preparations are so named because concentrated solutions 

 of them are spread upon glass and allowed to evaporate so that the 

 salts may be procured in the form of scales. The following are the 

 most important: 



Ferri Citras. 



Ferri et Ammonii Citras. 



* Ferri et Ammonii Tartras, U. S. P., VIII. 



* Ferri et Potassii Tartras, U. S. P., VIII. 



* Ferri et Quininse Citras, U. S. P., VIII. 



* Ferri et Strychnine Citras, U. S. P., VIII. 

 Ferri Phosphas. 



* Ferri Pyrophosphas Solubilis, U. S. P., VIII. 



These preparations are only used in small animal practice. The 

 average dose of all with the exception of iron and ammonia citrate 

 (grs., viij ; 0.5) and Iron and strychnine citrate (grs. ij ; 0.12) is grs. 

 iv (0.3). They are used in the preparation of certain syrups, 

 glycerites and elixirs. 



FERRUM ALBUMINATUM 



There are several albuminates or proteid compounds of iron. 

 Bung, first demonstrated that iron was present in the tissues and 

 food as the nucleo-albuminate and succeeded in isolating such a com- 

 pound from the yolk of eggs which he called hematogen. This dif- 

 fers from the inorganic salts in resisting the action of sulphides. 

 Bung believed that the inorganic iron salts were not absorbed and 

 only benefited anemia by combining with the hydrogen sulphide, 

 which would protect the iron in the food from reduction by the same 

 agent until absorption took place. These theories have been dis- 

 proved by other investigators and it is generally believed that the 

 inorganic preparations are very capable of absorption. Some of 

 ,the organic preparations, however, are less disagreeable to the 

 stomach and may be slightly more readily absorbed. Schmiede- 

 berg obtained a preparation similar to hematogen from pig's liver 

 which he named "ferratin" (7 — 8 per cent, of iron). This is now 

 prepared by the action of iron salts on egg albumen. Dose for the 

 dog is grs. ii] — ^x ; 0.3 — 0.6. 

 * Unofficial. 



