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Rimso-50 (Dimethyl Sulfoxide) - Description and Clinical Pharmacology

 
 



PRESCRIBING INFORMATION

Rx only

DESCRIPTION

RIMSO-50®(dimethyl sulfoxide) (DMSO) 50% w/w Aqueous Solution for intravesical instillation.

Each mL contains 0.54 gm dimethyl sulfoxide STERILE AND NON-PYROGENIC.

Intravesical instillation for the treatment of interstitial cystitis.

NOT FOR INTRAMUSCULAR OR INTRAVENOUS INJECTION.

The active component of RIMSO-50® is dimethyl sulfoxide which has the empirical formula C2H6OS, and is structurally represented as:

Dimethyl sulfoxide is a clear, colorless and essentially odorless liquid which is miscible with water and most organic solvents. Other physical characteristics include: molecular weight 78.13, melting point 18.3° C, and a specific gravity of 1.096.

CLINICAL PHARMACOLOGY

Dimethyl sulfoxide is metabolised in man by oxidation to dimethyl sulfone or by reduction to dimethyl sulfide. Dimethyl sulfoxide and dimethyl sulfone are excreted in the urine and feces. Dimethyl sulfide is eliminated through the breath and skin and is responsible for the characteristic odor from patients on dimethyl sulfoxide medication. Dimethyl sulfone can persist in serum for longer than two weeks after a single intravesical instillation. No residual accumulation of dimethyl sulfoxide has occurred in man or lower animals who have received treatment for protracted periods of time. Following topical application, dimethyl sulfoxide is absorbed and generally distributed in the tissues and body fluids.

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