Adverse Drug Reaction Classification System

Pharmaceutical Information
Drug Name Acetaminophen
Drug ID BADD_D00023
Description Acetaminophen (paracetamol), also commonly known as _Tylenol_, is the most commonly taken analgesic worldwide and is recommended as first-line therapy in pain conditions by the World Health Organization (WHO).[A176318] It is also used for its antipyretic effects, helping to reduce fever.[F4124] This drug was initially approved by the U.S. FDA in 1951 and is available in a variety of forms including syrup form, regular tablets, effervescent tablets, injection, suppository, and other forms.[L5756,L5774,F4124,Label] Acetaminophen is often found combined with other drugs in more than 600 over the counter (OTC) allergy medications, cold medications, sleep medications, pain relievers, and other products.[L5783] Confusion about dosing of this drug may be caused by the availability of different formulas, strengths, and dosage instructions for children of different ages.[L5783] Due to the possibility of fatal overdose and liver failure associated with the incorrect use of acetaminophen, it is important to follow current and available national and manufacturer dosing guidelines while this drug is taken or prescribed.[L5786,L5789,Label]
Indications and Usage In general, acetaminophen is used for the treatment of mild to moderate pain and reduction of fever.[F4124] It is available over the counter in various forms, the most common being oral forms. Acetaminophen _injection_ is indicated for the management of mild to moderate pain, the management of moderate to severe pain with adjunctive opioid analgesics, and the reduction of fever.[Label] Because of its low risk of causing allergic reactions, this drug can be administered in patients who are intolerant to salicylates and those with allergic tendencies, including bronchial asthmatics.[F4124] Specific dosing guidelines should be followed when administering acetaminophen to children.[L5780]
Marketing Status approved
ATC Code N02BE01
DrugBank ID DB00316
KEGG ID D00217
MeSH ID D000082
PubChem ID 1983
TTD Drug ID D0U5QK
NDC Product Code 73408-174; 76281-501; 79903-032; 79903-174; 82501-1575; 0904-6645; 0113-4004; 0406-0422; 0406-4255; 0406-7375; 0904-6773; 0904-6883; 25000-901; 0904-7278; 0904-7320; 0924-0128; 51114-0218; 51114-0221; 53604-702; 58103-115; 59644-9910; 59644-9918; 59644-9920; 59917-026; 66326-203; 70120-021; 81919-001; 11673-133; 11673-241; 11673-759; 11673-838; 11673-841; 11822-1575; 11822-9440; 17856-0179; 21130-356; 30142-033; 30142-157; 30142-507; 36800-435; 36800-766; 36800-991; 0113-8959; 0121-1314; 0121-1781; 37808-161; 0135-0537; 41250-317; 0135-7011; 41520-709; 41520-818; 45865-656; 46122-630; 47682-174; 49035-175; 49035-741; 49348-430; 49348-973; 49638-106; 49638-110; 50580-209; 50580-451; 50580-457; 50580-460; 50580-522; 50580-937; 50844-255; 50844-951; 51672-2115; 51672-2116; 51824-060; 53943-092; 53943-449; 54257-720; 55154-4063; 55154-4064; 55154-7897; 55154-7899; 55319-494; 55319-559; 55579-405; 55910-010; 55910-749; 55910-946; 56062-650; 57896-251; 0363-0285; 62011-0247; 62011-0336; 62011-0460; 62207-188; 0363-0959; 63029-610; 63323-434; 63629-1157; 0363-9440; 0363-9781; 63868-089; 63868-503; 0363-9993; 63868-836; 66689-054; 66715-5533; 66715-9737; 67091-311; 68016-333; 68071-2201; 68071-2758; 68094-030; 68210-6113; 68788-6886; 68998-070; 69103-2522; 69676-0084; 69729-006; 69729-047; 69848-008; 70000-0306; 70000-0310; 70677-0018; 70677-1124; 70677-1127; 70692-150; 70795-1200; 71335-0804; 71335-1398; 71399-0160; 72036-104; 72189-197; 73282-1164; 73659-013; 76281-328; 76281-526; 79903-172; 81033-002; 81389-001; 0904-5847; 0113-5002; 0406-0046; 0406-4814; 0406-7250; 10888-8171; 0904-7314; 0924-0228; 69988-0024; 11822-0812; 11822-5091; 17856-0166; 24385-484; 29485-6547; 29485-7003; 0113-0212; 30142-590; 30142-766; 0113-0484; 0113-0946; 0121-1878; 37808-946; 37808-980; 41163-363; 41163-500; 41250-148; 41250-570; 41250-766; 41520-023; 41520-127; 41520-606; 42681-0025; 0143-9386; 46122-042; 46122-209; 46122-322; 47682-434; 49035-308; 49035-869; 49314-1753; 49580-0281; 49738-024; 50066-525; 50090-0395; 50090-5313; 50090-5535; 50090-5971; 50090-6059; 50269-008; 50580-177; 50580-521; 50580-555; 50580-599; 50594-045; 51013-402; 51672-5320; 51824-086; 53329-643; 53943-298; 53943-525; 55150-307; 55301-175; 55319-282; 55319-288; 55700-946; 55758-026; 55910-506; 55910-697; 55910-701; 56062-227; 56062-484; 57896-206; 58602-745; 58602-766; 58602-775; 59779-350; 59779-754; 59779-946; 60687-740; 61919-271; 62011-0001; 62011-0023; 0363-0579; 62207-183; 63187-373; 63187-588; 63187-968; 0363-5101; 63868-174; 63868-679; 68016-198; 68016-240; 68016-502; 68071-5229; 68210-3100; 68599-4679; 68788-8461; 68998-001; 68998-392; 69168-418; 69256-105; 69618-011; 69842-491; 69842-750; 69848-015; 70000-0481; 70000-0627; 70677-0093; 70692-399; 71205-322; 71205-461; 71309-077; 71335-1536; 72288-766; 76420-372; 79481-0184; 79903-107; 80267-484; 0904-5769; 82673-096; 82706-007; 0406-7233; 16528-002; 0924-0123; 50580-248; 59644-9006; 59644-9206; 59644-9913; 59644-9919; 59651-034; 61474-4265; 62485-033; 66326-100; 70120-007; 70120-036; 70120-155; 11673-105; 11673-519; 17714-012; 17856-0175; 21130-108; 21130-155; 0113-0025; 29485-6926; 30142-052; 33992-0175; 36800-632; 36800-770; 36800-946; 36800-973; 37808-120; 37808-285; 37808-747; 41226-341; 41250-501; 41520-544; 42681-7076; 45802-730; 46122-390; 46994-663; 47682-172; 49035-313; 49035-455; 49348-325
UNII 362O9ITL9D
Synonyms Acetaminophen | Acetominophen | Hydroxyacetanilide | APAP | p-Acetamidophenol | p-Hydroxyacetanilide | Paracetamol | N-(4-Hydroxyphenyl)acetanilide | Acetamidophenol | N-Acetyl-p-aminophenol | Acephen | Acetaco | Tylenol | Anacin-3 | Anacin 3 | Anacin3 | Datril | Panadol | Acamol | Algotropyl
Chemical Information
Molecular Formula C8H9NO2
CAS Registry Number 103-90-2
SMILES CC(=O)NC1=CC=C(C=C1)O
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)
Hypoaesthesia23.03.03.081; 17.02.06.023--Not Available
Hypoalbuminaemia14.10.01.002; 09.01.02.003--
Hypoglycaemia14.06.03.001; 05.06.03.0010.000089%
Hypokalaemia14.05.03.0020.000107%
Hypomagnesaemia14.04.02.001--
Hyponatraemia14.05.04.0020.000036%
Hypophosphataemia14.04.03.0010.000036%
Hypotension24.06.03.0020.000250%
Hypothermia08.05.01.003; 12.05.03.0010.000054%
Hypotonia17.05.02.002; 15.05.04.008--Not Available
Hypoxia22.02.02.003--
IIIrd nerve paralysis17.04.02.003; 06.05.02.011--Not Available
Immune system disorder10.02.01.001--Not Available
Impaired healing08.03.02.001--Not Available
Incontinence17.05.01.006; 07.01.06.011; 20.02.02.004--Not Available
Increased appetite14.03.01.003; 08.01.09.027--Not Available
Influenza like illness08.01.03.0100.000121%
Injection site bruising24.07.06.017; 23.03.11.015; 12.07.03.042; 08.02.03.042--Not Available
Injection site erythema23.03.06.015; 12.07.03.001; 08.02.03.0010.000036%Not Available
Injection site extravasation08.02.03.002; 12.07.03.002--Not Available
Injection site haemorrhage24.07.01.010; 12.07.03.005; 08.02.03.005--Not Available
Injection site induration12.07.03.007; 08.02.03.007--Not Available
Injection site inflammation12.07.03.009; 08.02.03.008--Not Available
Injection site pain12.07.03.011; 08.02.03.010--Not Available
Injection site reaction08.02.03.014; 12.07.03.015--
Insomnia17.15.03.002; 19.02.01.0020.000261%
Intentional self-injury19.12.01.002; 12.01.08.0360.000214%Not Available
Intestinal ischaemia24.04.08.001; 07.15.02.001--Not Available
Intestinal obstruction07.13.01.002--Not Available
Intracranial aneurysm17.08.06.001; 24.02.04.001--Not Available
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ADReCS-Target
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