Adverse Drug Reaction Classification System

Pharmaceutical Information
Drug Name Hydralazine
Drug ID BADD_D01081
Description Originally developed in the 1950s as a malaria treatment, hydralazine showed antihypertensive ability and was soon repurposed.[A186841] Hydralazine is a hydrazine derivative vasodilator used alone or as adjunct therapy in the treatment of hypertension and only as adjunct therapy in the treatment of heart failure.[A186820,L8782,L8785] Hydralazine is no longer a first line therapy for these indications since the development of newer antihypertensive medications.[T691] Hydralazine hydrochloride was FDA approved on 15 January 1953.[L8779]
Indications and Usage For the treatment of essential hypertension, alone or as an adjunct. Also for the management of severe hypertension when the drug cannot be given orally or when blood pressure must be lowered immediately, congestive heart failure (in combination with cardiac glycosides and diuretics and/or with isosorbide dinitrate), and hypertension secondary to pre-eclampsia/eclampsia.
Marketing Status Prescription; Discontinued
ATC Code C02DB02
DrugBank ID DB01275
KEGG ID D08044
MeSH ID D006830
PubChem ID 3637
TTD Drug ID D0K1XK
NDC Product Code Not Available
Synonyms Hydralazine | Hydrallazin | Hydrazinophthalazine | Apressin | Nepresol | Hydralazine mono-Hydrochloride | Hydralazine mono Hydrochloride | mono-Hydrochloride, Hydralazine | Apressoline | Apresoline | Hydralazine Hydrochloride | Hydrochloride, Hydralazine
Chemical Information
Molecular Formula C8H8N4
CAS Registry Number 86-54-4
SMILES C1=CC=C2C(=C1)C=NN=C2NN
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)
Supraventricular tachycardia02.03.03.0120.000828%
Syncope24.06.02.012; 17.02.04.008; 02.01.02.0080.000497%
Systemic lupus erythematosus23.03.02.006; 15.06.02.003; 10.04.03.0040.003313%Not Available
Tachycardia02.03.02.0070.000216%Not Available
Thrombocytopenia01.08.01.002--Not Available
Tremor17.01.06.002--
Urinary retention20.02.02.011--
Urticaria23.04.02.001; 10.01.06.001--
Vascular purpura01.01.04.007; 24.07.06.011; 23.06.01.008--Not Available
Vasculitis24.05.02.001; 10.02.02.0060.007454%
Vasculitis necrotising24.05.02.002; 10.02.02.0080.001160%Not Available
Vision blurred17.17.01.010; 06.02.06.007--
Vomiting07.01.07.003--
Weight decreased13.15.01.0050.001160%
Weight increased13.15.01.006--
Wheezing22.03.01.0090.000331%
White blood cell count decreased13.01.06.012--
Mental status changes19.07.01.0010.000663%Not Available
Tubulointerstitial nephritis20.05.02.0020.001657%Not Available
Lupus-like syndrome23.03.02.004; 15.06.02.004; 10.04.03.0030.009773%Not Available
Foetal heart rate abnormal13.21.01.0010.000331%Not Available
Protein urine present13.13.02.006--Not Available
Musculoskeletal discomfort15.03.04.001--Not Available
Transaminases increased13.03.01.0150.000331%Not Available
Antinuclear antibody positive13.06.01.0030.000331%Not Available
Antineutrophil cytoplasmic antibody positive13.06.01.0120.000663%Not Available
Hepatic enzyme increased13.03.01.0190.000331%Not Available
Decreased appetite14.03.01.005; 08.01.09.028--
Ill-defined disorder08.01.03.049--Not Available
Blood disorder01.05.01.004--Not Available
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