Adverse Drug Reaction Classification System

Pharmaceutical Information
Drug Name Tizanidine
Drug ID BADD_D02230
Description Tizanidine is a fast-acting drug used for the management of muscle spasm, which may result from the effects of multiple sclerosis, stroke, an acquired brain injury, or a spinal cord injury [T574]. It may also be caused by musculoskeletal injury [A177583]. Regardless of the cause, muscle spasticity can be an extremely painful and debilitating condition. Initially approved by the FDA in 1996, tizanidine is an Alpha-2 adrenergic receptor agonist reducing spasticity by the presynaptic inhibition of excitatory neurotransmitters that cause firing of neurons promoting muscle spasm [FDA label].
Indications and Usage Tizanidine is indicated for the relief of muscle spasticity, which can interfere with daily activities. The general recommendation is to reserve tizanidine use for periods of time when there is a particular need for relief, as it has a short duration of action [FDA label, F4471].
Marketing Status approved; investigational
ATC Code M03BX02
DrugBank ID DB00697
KEGG ID D08611
MeSH ID C023754
PubChem ID 5487
TTD Drug ID D01MDT
NDC Product Code 72789-325; 35356-662; 50090-0840; 51655-740; 53002-1418; 57664-502; 60760-694; 70771-1335; 72578-096; 61919-221; 63187-009; 63187-910; 63629-8533; 68084-645; 29300-168; 29300-169; 42291-809; 55111-180; 60760-263; 63629-2371; 71610-228; 60760-505; 63187-493; 63187-673; 68084-775; 70518-3658; 71610-451; 0615-8468; 72578-097; 0904-6418; 43063-868; 60505-0251; 60760-782; 67877-614; 68071-5268; 70518-2210; 70771-1336; 71205-311; 71335-1016; 71335-1799; 0615-8360; 76420-228; 55111-179; 60505-0252; 60760-719; 63629-3209; 67877-613; 68788-7782; 70518-3181; 71610-162; 71610-455; 42291-808; 50090-0841; 63187-145; 63629-1673; 67296-1599; 70518-0133; 70518-1439; 70518-3112; 71610-167; 0615-8274; 0615-8469; 72789-326; 16714-172; 50090-0811; 50090-5767; 51655-603; 53002-1437; 68071-3440; 70518-0573; 72789-327; 76420-229; 43063-455; 55154-7287; 57664-503; 63629-2370; 68788-7781; 68788-7991; 16714-171; 71335-0914; 43353-167; 50268-759; 50268-760
UNII 6AI06C00GW
Synonyms tizanidine | 5-chloro-4-(2-imidazolin-2-yl-amino)-2,1,3-benzothiadiazole | Zanaflex | tizanidine hydrochloride | tizanidine monohydrochloride | DS 103-282 | Sirdalud
Chemical Information
Molecular Formula C9H8ClN5S
CAS Registry Number 51322-75-9
SMILES C1CN=C(N1)NC2=C(C=CC3=NSN=C32)Cl
Chemical Structure
ADRs Induced by Drug
*The priority for ADR severity classification is based on FAERS assessment, followed by the most severe level in CTCAE rating. If neither is available, it will be displayed as 'Not available'.
**The 'Not Available' level is hidden by default and can be restored by clicking on the legend twice.
ADR Term ADReCS ID ADR Frequency (FAERS) ADR Severity Grade (FAERS) ADR Severity Grade (CTCAE)
Lymphatic disorder01.09.01.003---
Foetor hepaticus07.01.06.026; 09.01.05.006---
Musculoskeletal discomfort15.03.04.001---
Affect lability19.04.01.001---
Haemorrhage24.07.01.002---
Faecaloma07.01.03.004---
Faecalith07.01.03.007---
Cognitive disorder17.03.03.003; 19.21.02.0010.000052%
Angiopathy24.03.02.007---
Cardiac disorder02.11.01.0030.000052%-
Connective tissue disorder10.04.04.026; 15.06.01.006---
Inflammation08.01.05.007; 10.02.01.0890.000052%-
Mediastinal disorder22.09.03.001---
Mental disorder19.07.01.0020.000052%-
Ill-defined disorder08.01.03.049---
Urinary tract obstruction20.08.01.004--
Blood disorder01.05.01.004---
Drug intolerance08.06.01.0130.000293%-
Psychotic disorder19.03.01.002--
Hepatobiliary disease09.01.08.003---
Hyperlipidaemia14.08.03.001--
Cystitis noninfective20.03.02.001--
Vulvovaginal mycotic infection11.03.05.004; 21.14.02.004---
Treatment failure08.06.01.0170.000178%-
Liver injury09.01.07.022; 12.01.17.0120.000105%-
Traumatic liver injury09.01.08.010; 12.01.17.027---
Nail atrophy23.02.05.010---
Acute kidney injury20.01.03.016--
Drug-induced liver injury09.01.07.023; 12.03.01.0440.000167%-
Hepatic cancer09.04.02.008; 16.07.02.004---
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ADReCS-Target
Drug Name ADR Term Target
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