Otilonium bromide is a drug used to treat abdominal pain caused by irritable bowel syndrome. It is an antispasmodic, which is useful to treat the symptoms of irritable bowel syndrome by reducing abdominal spasms, bloating, pain, and gut motility. Technically, otilonium bromide is a quaternary ammonium antispasmodic with preferential local activity on the gastrointestinal smooth muscle; its mechanism includes antagonism of muscarinic receptors and inhibition of L-type calcium channels, producing smooth muscle relaxation with minimal central nervous system exposure due to limited systemic absorption. The substance is formulated for oral use, typically as 40 mg tablets, and displays physicochemical properties consistent with a bromide salt of a lipophilic tertiary amine, low oral bioavailability, and predominant fecal excretion of unchanged material. Stability and formulation development focus on maintaining solid-state stability, control of residual solvents per ICH Q3C, and ensuring low levels of related impurities.
Parent: Otilonium
Parent: Otilonium
Typical analytical and quality control specifications for otilonium bromide include defined limits for related organic impurities and degradation products and adherence to general pharmacopoeial criteria. Known related compounds and impurities that are monitored include otilonium N-oxide, N-dealkylated or desbenzyl derivatives, and minor hydrolysis or oxidation products; individual related organic impurities are commonly limited to 0.1 to 0.3 percent by weight each, with a total related substances limit typically not exceeding 1.0 percent, depending on the regulatory monograph and risk assessment. Genotoxic or potentially harmful impurities are controlled to tighter limits in line with ICH M7. Additional quality attributes include residual solvents within ICH class limits, heavy metals below pharmacopeial thresholds (for example typically less than 10 parts per million), and water content controlled to meet formulation stability requirements.
Take Otilonium bromide exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor. Take it on an empty stomach, preferably 20 minutes before meals.
Otilonium bromide is commonly supplied as oral tablets, often 40 mg strength, with a typical adult dosing regimen of one tablet three times daily before meals; always follow the prescribing information or your healthcare professional’s instructions.
