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Tylenol with codeine

National Center for Complementary and Integrative Health (NCCIH) · FDA-approved active Small molecule

Acetaminophen reduces fever and mild-to-moderate pain through inhibition of prostaglandin synthesis, while codeine is an opioid agonist that enhances pain relief through central nervous system depression.

Acetaminophen reduces fever and mild-to-moderate pain through inhibition of prostaglandin synthesis, while codeine is an opioid agonist that enhances pain relief through central nervous system depression. Used for Mild to moderate pain, Pain management in adults and children.

At a glance

Generic nameTylenol with codeine
SponsorNational Center for Complementary and Integrative Health (NCCIH)
Drug classOpioid analgesic combination
TargetMu opioid receptor (codeine); cyclooxygenase enzymes (acetaminophen)
ModalitySmall molecule
Therapeutic areaPain Management
PhaseFDA-approved

Mechanism of action

Acetaminophen (paracetamol) works primarily by inhibiting cyclooxygenase enzymes in the central nervous system, reducing prostaglandin production and lowering pain perception and body temperature set point. Codeine is a weak opioid that binds to mu opioid receptors in the brain and spinal cord, providing additional analgesic effects. The combination provides synergistic pain relief for moderate pain that does not respond adequately to acetaminophen alone.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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