Adverse Drug Reaction Classification System

Pharmaceutical Information
Drug Name Methylnaltrexone bromide
Drug ID BADD_D01430
Description Methylnaltrexone is a pheriphally-acting μ-opioid antagonist that acts on the gastrointestinal tract to decrease opioid-induced constipation without producing analgesic effects or withdrawal symptoms. It is also a weak CYP2D6 inhibitor. FDA approved in 2008.
Indications and Usage Treatment of opioids induced constipation in palliative patients that are inadequately responding to laxative therapy.
Marketing Status Prescription
ATC Code A06AH01
DrugBank ID DB06800
KEGG ID D06618
MeSH ID C032257
PubChem ID 5361917
TTD Drug ID D03YVO
NDC Product Code 65649-551; 65649-552; 66406-0219; 65649-150; 0406-1251
Synonyms methylnaltrexone | quaternary ammonium naltrexone | (5alpha)-17-(cyclopropylmethyl)-3,14-dihydroxy-17-methyl-4,5-epoxymorphinan-17-ium-6-one | 17-(cyclopropylmethyl)-4,5-epoxy-3,14-dihydroxymorphinanium-6-one | morphinanium, 17-(cyclopropylmethyl)-4,5-epoxy-3,14-dihydroxy-17-methyl-6-oxo-, (5alpha)- | morphinan-17-ium-6-one, 17-(cyclopropylmethyl)-4,5-epoxy-3,14-dihydroxy-17-methyl-, (5alpha)- | naltrexone methylbromide | N-methylnaltrexone bromide | morphinan-17-ium-6-one, 17-(cyclopropylmethyl)-4,5-epoxy-3,14-dihydroxy-17-methyl-, bromide, (5alpha,17R)- | naltrexone MB | naltrexone methobromide | methylnaltrexone bromide | methyl-naltrexone hydrobromide | MRZ 2663BR | Relistor | MRZ-2663 | naltrexonium methiodide
Chemical Information
Molecular Formula C21H26BrNO4
CAS Registry Number 73232-52-7
SMILES C[N+]1(CCC23C4C(=O)CCC2(C1CC5=C3C(=C(C=C5)O)O4)O)CC6CC6.[Br-]
Chemical Structure
ADR Related Proteins Induced by Drug
ADR Term Protein Name UniProt AC TTD Target ID PMID
Not AvailableNot AvailableNot AvailableNot AvailableNot Available
ADRs Induced by Drug
ADR Term ADReCS ID ADR Frequency (FAERS) ADR Severity Grade (FAERS) ADR Severity Grade (CTCAE)
Abdominal pain07.01.05.002--
Diarrhoea07.02.01.001--
Dizziness02.01.02.004; 24.06.02.007; 17.02.05.003--
Erythema23.03.06.001--Not Available
Flatulence07.01.04.002--
Flushing24.03.01.002; 23.06.05.003; 08.01.03.025--
Gastrointestinal disorder07.11.01.001--Not Available
Gastrointestinal pain07.01.05.005--
Gastrointestinal perforation07.04.04.001--Not Available
Hyperhidrosis23.02.03.004; 08.01.03.028--
Injection site reaction12.07.03.015; 08.02.03.014--
Malaise08.01.01.003--
Muscle spasms15.05.03.004--
Nausea07.01.07.001--
Nervous system disorder17.02.10.001--Not Available
Oedema14.05.06.010; 08.01.07.006--Not Available
Pain08.01.08.004--
Skin disorder23.03.03.007--Not Available
Vomiting07.01.07.003--
Perforation08.01.03.058--Not Available
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