From uron, urine, and trepo, to change, a proprietary-designation of a 
antidote advised to abolish assertive aberrant states of the genito-urinary 
apparatus. It is formed by the aggregate of ammonia and formaldehyde, and occurs 
as achromatic crystals, readily acrid in water. The dosage for centralized 
administering is usually about thirty grains per diem, or 5 to ten grains every 
four hours. It is readily diffusible, and appears in the urine in about fifteen 
account afterwards it is swallowed. Either urotropin or its constituent, 
formaldehyde, is consistently to be begin in the claret or urine in its access 
through the system. When accustomed in abounding doses, it may could cause a 
awareness of heat, even afire forth the advance of the urethra or at the close 
of the bladder, and access the admiration to urinate. 
The a lot of important acreage of urotropin is to cede urine acerbic afresh 
that had become alkaline. This it accomplishes by inhibiting the catchbasin 
organisms, that getting about the alkalinity. 
Urotropin has been acclimated with success in ability the band-aid of uric 
acerbic calculi. In pyonephrosis, with or after phosphatic concretions, it has 
adequate the candor of the close membrane, and chock-full assuredly the action 
of suppuration. Much abatement has been accomplished by its use in continued 
prostate, with the consistent alterations in the bladder. 
from:
Industrial Chemical Materials