C TJRRENT COLORIMETRIC METHODS for the measurement of formaldehyde in the presence of methenamine salts appear misleading. The principal problems with these technics include the release of formaldehyde (1, 2) from intact methenamine and the nonspecificity of the reaction producing color with other compounds present in urine. However, a modification of the method of Tannenbaum and Bricker (3) ap...

methenamine salts have been traditionally used in the veterinary and human medicine, but its use is sometimes associated with some side effects.toxicopathological effects of methenamine salt have always been a major concern. there is scantly information available about the lesions of methenamine compound in embryo. the objective of this study was to determine the teratogenic effects of methenam...

In a randomised, double blind, long term, crossover study 1 g twice daily of methenamine hippurate was compared with placebo for its preventive effect on recurrent attacks of acute cystitis. Methenamine hippurate and placebo were interchanged every six months for two years. During one of the years patients took 250 ml extra fluid every morning and evening. Out of 21 enrolled patients, 14 comple...

Methenamine salts have been traditionally used in the veterinary and human medicine, but its use is sometimes associated with some side effects.Toxicopathological effects of methenamine salt have always been a major concern. There is scantly information available about the lesions of methenamine compound in embryo. The objective of this study was to determine the teratogenic effects of methenam...

Nyka9) employed the Gomori-Grocott's chromic acid-methenamine silver method for demonstrating tubercle bacilli in tissue sections after sublimate fixative with added hydrogen peroxide or periodic acid. He described that this procedure could demonstrate mycobacteria that had lost their acidfastness by the usual carbol fuchsin stain. Harada5) also employed the periodic acid-methenamine silver sta...

Methenamine salts have been traditionally used in the veterinary and human medicine, but its use is sometimes associated with some side effects.Toxicopathological effects of methenamine salt have always been a major concern. There is scantly information available about the lesions of methenamine compound in embryo. The objective of this study was to determine the teratogenic effects of methenam...

The administration of methenamine mandelate (Mandelamine) to normal individuals and patients with carcinoid resulted in a marked reductionin apparent urinary hydroxyindoleaceticacid (HIAA) as determined by the quantitative nitroso-naphthol method. Mandelamine, methenamine, and formaldehyde inhibited the normal color development in vitro. The interfering reaction is dependent on an acid pH and i...

The socket of a prosthesis is a tightly closed container. Sweating inside the socket is annoying and may also irritate the skin over the stump or lead to local infection such as folliculitis. The most effective method of preventing sweating is by the use of astringent agents. Formaldehyde is a very strong astringent but is not pleasant to use and may cause skin irritation and systemic reactions...

    In conclusion, UTI is a globally distributed disease with emergence of multidrug-resistant bacteria; thus, new drug discovery or activation of previously used drugs is an urgent issue. Methenamine has been suggested as a beneficial agent for the UTI prevention as it works as a urinary antiseptic by safely producing formaldehyde to prevent bacterial growth while avoiding bacterial resistance...