MedPath

Acetaminophen

Generic Name
Acetaminophen
Brand Names
Acephen, Acetadryl, Allzital, Apadaz, Arthriten Inflammatory Pain, Bupap, Butapap, Cetafen, Children's Silapap, Coricidin Hbp Cold & Flu, Darvocet-N, Dayquil Sinex, Diphen, Dolofin, Dologen, Dologesic Reformulated Jun 2016, Duralgina, Dvorah, Endocet, Esgic, Exaprin, Excedrin, Excedrin PM Triple Action, Excedrin Tension Headache, Feverall, Fioricet, Fioricet With Codeine, Goody's Back & Body Pain Relief, Goody's Body Pain, Goody's Extra Strength, Goody's Headache Relief Shot, Goody's PM, Hycet, Legatrin PM, Little Fevers, Lorcet, Lortab, Mapap, Mersyndol, Midol Complete, Midol Cramps & Bodyaches, Nalocet, Norco, Orbivan, Pamprin Max Formula, Pamprin Multi-symptom, Panadol, Pediacare Children's Fever Reducer Pain Reliever, Percocet, Percogesic Reformulated Jan 2011, Pharbetol, Premsyn Pms, Prolate, Rivacocet, Robaxacet, Robaxacet-8, Roxicet, Sudafed PE Sinus Headache, Tactinal, Tencon, Trezix, Triatec, Triatec-30, Triatec-8, Tylenol, Tylenol PM, Tylenol With Codeine, Ultracet, Vanatol, Vanatol S, Vanquish, Xodol, Xolox, Zamicet, Zflex, Zydone
Drug Type
Small Molecule
Chemical Formula
C8H9NO2
CAS Number
103-90-2
Unique Ingredient Identifier
362O9ITL9D
Background

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). It is also used for its antipyretic effects, helping to reduce fever. 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.

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. Confusion about dosing of this drug may be caused by the availability of different formulas, strengths, and dosage instructions for children of different ages. 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.

Indication

In general, acetaminophen is used for the treatment of mild to moderate pain and reduction of fever. 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.

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. Specific dosing guidelines should be followed when administering acetaminophen to children.

Associated Conditions
Acute Gouty Arthritis, Acute Musculoskeletal Pain, Allergic Reaction, Allergy to Tree Pollen, Ankylosing Spondylitis (AS), Chills, Cold, Common Cold, Cough, Cough caused by Common Cold, Coughing caused by Flu caused by Influenza, Dyskinesia of the Biliary Tract, Dyskinesia of the Urinary Tract, Febrile Convulsions, Febrile Illness Acute, Fever, Fibromyalgia, Flu caused by Influenza, Headache, Joint dislocations, Menstrual Distress (Dysmenorrhea), Mild pain, Muscle Inflammation, Muscle Injuries, Muscle Spasms, Musculoskeletal Pain, Myalgia, Nasal Congestion, Neuropathic Pain, Osteoarthritis (OA), Pain, Postoperative pain, Premenstrual cramps, Rheumatoid Arthritis, Rhinopharyngitis, Rhinorrhoea, Severe Pain, Sinusitis, Spasms, Spastic Pain of the Gastrointestinal Tract, Sprains, Symptoms Cold, Tension Headache, Toothache, Upper Respiratory Tract Infection, Whiplash Syndrome, Acute Torticollis, Articular inflammation, Cold or flu syndrome, Mild to moderate pain, Minor aches and pains, Minor pain, Moderate Pain, Moderate to severe pain
Associated Therapies
Airway secretion clearance therapy, Anti-spasmodics, Bronchodilation

Modified Pre-operative Oral Doses Acetaminophen Versus Intravenous Acetaminophen

Phase 4
Completed
Conditions
Tonsillectomy
Adenoidectomy
Interventions
First Posted Date
2016-12-16
Last Posted Date
2021-02-18
Lead Sponsor
University of California, Davis
Target Recruit Count
74
Registration Number
NCT02994940
Locations
🇺🇸

University of California Davis Children's Hospital, Sacramento, California, United States

Dextromethorphan Use in Multimodal Analgesia Regimens for Total Knee Arthroplasty

First Posted Date
2016-12-09
Last Posted Date
2019-05-14
Lead Sponsor
University of Southern California
Target Recruit Count
23
Registration Number
NCT02987920

Efficacy of Opioid-free Anesthesia in Reducing Postoperative Respiratory Depression in Children Undergoing Tonsillectomy

Phase 3
Completed
Conditions
Anesthesia
General Anesthesia
Analgesics, Opioid
Postoperative Complications
Pathologic Processes
Physiologic Effects of Drugs
Narcotics
Analgesics
Sleep Disordered Breathing
Obstructive Sleep Apnea of Child
Interventions
Drug: Acetaminophen, gabapentin
Drug: Acetaminophen
Drug: Ketamine , Lidocaine , Dexmedetomidine
Drug: Fentanyl, Dexmedetomidine
Drug: Dexamethasone , Ondansetron
Drug: Sevoflurane, Fentanyl
Drug: Sevoflurane
First Posted Date
2016-12-09
Last Posted Date
2021-08-10
Lead Sponsor
University of Saskatchewan
Target Recruit Count
50
Registration Number
NCT02987985
Locations
🇨🇦

Royal University Hospital, Saskatoon, Saskatchewan, Canada

Evaluating Pain Outcomes of Ketorolac Administration in Children Undergoing Circumcision

Phase 1
Completed
Conditions
Pain, Postoperative
Phimosis
Paraphimosis
Balanitis
Interventions
First Posted Date
2016-11-28
Last Posted Date
2018-06-29
Lead Sponsor
Alberta Children's Hospital
Target Recruit Count
30
Registration Number
NCT02973958
Locations
🇨🇦

Alberta Children's Hospital, Calgary, Alberta, Canada

Exploratory Study to Investigate Cognition Function and Mobility in Individuals With Pain

Phase 4
Terminated
Conditions
Pain
Interventions
Other: Placebo
Drug: Paracetamol and caffeine
Drug: Paracetamol
First Posted Date
2016-11-28
Last Posted Date
2018-08-28
Lead Sponsor
GlaxoSmithKline
Target Recruit Count
21
Registration Number
NCT02974114
Locations
🇬🇧

GSK Investigational Site, Brentford, Middlesex, United Kingdom

Antimalaria Drugs Susceptibility Testing for an Effective Management of Infected Patients in Sub-Sahara Africa

Phase 3
Completed
Conditions
Drug Resistant Malaria Due to Plasmodium Falciparum
Interventions
Drug: Arthemeter-lumefantrine
Drug: Artesunate mefloquine
Drug: Dihydroartemisinin piperaquine
Drug: Paracetamol
Drug: Amoxicillin
Drug: Quinine
First Posted Date
2016-11-28
Last Posted Date
2016-11-29
Lead Sponsor
University of Bamenda
Target Recruit Count
300
Registration Number
NCT02974348
Locations
🇨🇲

CDC Hospital, Tiko, South west, Cameroon

SPI-directed Analgesia for Vitreoretinal Surgeries

Not Applicable
Completed
Conditions
Postoperative Pain
Postoperative Nausea and Vomiting
Vitreoretinal Surgeries
Interventions
Drug: Metamizol
Drug: Acetaminophen
Drug: 0,5 % bupivacaine with of 2% lidocaine
Drug: Proxymetacaine
First Posted Date
2016-11-25
Last Posted Date
2018-01-23
Lead Sponsor
Medical University of Silesia
Target Recruit Count
176
Registration Number
NCT02973581
Locations
🇵🇱

Medical University of Silesia, Sosnowiec, Silesia, Poland

Multimodal Narcotic Limited Perioperative Pain Control With Colorectal Surgery

Phase 4
Conditions
Ileus
Colon Cancer
Ileus; Mechanical
Constipation Drug Induced
Colon Diverticulosis
Colonic Neoplasms
Pain, Postoperative
Ileus Paralytic
Colonic Diverticulitis
Constipation
Interventions
First Posted Date
2016-11-08
Last Posted Date
2017-03-20
Lead Sponsor
University of Illinois College of Medicine at Peoria
Target Recruit Count
80
Registration Number
NCT02958566
Locations
🇺🇸

Uicomp, Peoria, Illinois, United States

Outcomes Of Perioperative Pregabalin On Total Knee Arthroplasty

Phase 3
Completed
Conditions
Pain, Postoperative
Interventions
First Posted Date
2016-11-03
Last Posted Date
2017-09-14
Lead Sponsor
National University Hospital, Singapore
Target Recruit Count
116
Registration Number
NCT02954484

PROSTVAC in Combination With Nivolumab in Men With Prostate Cancer

Phase 1
Completed
Conditions
Prostate Cancer
Interventions
Biological: PROSTVAC-V/F
Drug: Nivolumab
Procedure: Prostatectomy
Drug: Tylenol
Procedure: Biopsy
First Posted Date
2016-10-14
Last Posted Date
2024-05-31
Lead Sponsor
National Cancer Institute (NCI)
Target Recruit Count
24
Registration Number
NCT02933255
Locations
🇺🇸

National Institutes of Health Clinical Center, Bethesda, Maryland, United States

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