384 HALOIDS OR HALOGENS 



Toxicology. Intravenous doses slow the heai-t and lower blood 

 pressure by stimulating the vagus center. Continuous full doses 

 produce a group of symptoms (thyroidism) : These are anemia, 

 emaciation, loss of appetite, muscular weakness, tremors, nervousness, 

 acceleration of the pulse associated frequently with palpitation, in- 

 crease in temperature believed to be due to increase in metabolism 

 and, somtimes, bulging of the eyes. The effects are similar to those 

 of exophthalmic goiter. 



Uses. 



1. In colloid goiter. 



2. Kachitis and osteomalacia, and delayed union of fracture. 



3. After complete thyroidectomy. 



4. In conditions in which it is believed there is an insufficient 

 secretion of the thyroids. 



5. In myxedema and cretinism of man. 



ANTITHYROID PREPARATIONS 



These agents are recommended to overcome a hyperactivity of 

 the thyroids. Most common are :■ 



* Beebe's Serum. The serum from animals whose thyroids 

 have been removed. 



* Thyroidectin. (Capsulce Antithyroidece). 



Gelatin capsules each containing 0.33 (5 grains) of a powder 

 prepared from the dried blood of thyroidectomized animals. Dose, 

 human, or dog. — One or two capsules daily according to need. P. D. 

 and Co. 



* Antithyroidin — Mcehius. The serum of sheep from blood 

 drawn at least six weeks after the removal of the thyroids, preserved 

 by the addition of 0.5 per cent, of phenol. Dose for dog, 0.5 — 1 mil, 

 (8 — 15 minims) three times daily, increasing gradually if necessary. 



These preparations are not often used in veterinary medicine. 

 * Unoflficial. 



