Paracodin (Dihydrocodeine Tartrate)

Paracodin is an opioid analgesic that acts on the central nervous system to relieve pain.

• Moderate to severe acute pain: Provides effective relief when non‑opioid analgesics are inadequate.
• Post‑operative pain: Helps manage pain following surgical procedures.
• Cancer‑related pain: Used as part of a multimodal regimen for cancer patients experiencing moderate pain.
• Chronic non‑cancer pain: May be prescribed for long‑term pain management under specialist supervision.

• Dihydrocodeine tartrate binds to mu‑opioid receptors in the central nervous system, mimicking endogenous opioids. This binding reduces neuronal excitability and alters pain signal transmission, resulting in decreased perception of pain. The drug also has modest activity at kappa and delta receptors, contributing to its overall analgesic effect.

Paracodin may cause a range of adverse reactions, most of which are dose‑dependent and reversible.

Common Side Effects

• Nausea and vomiting
• Constipation
• Drowsiness or sedation
• Dizziness
• Dry mouth
• Sweating

Serious or Rare Side Effects

• Respiratory depression
• Severe hypotension
• Allergic reactions such as rash, itching, or anaphylaxis
• Hallucinations or delirium
• Seizures
• Dependence, tolerance, and withdrawal symptoms upon abrupt discontinuation

When using Paracodin, several safety considerations should be observed.

• Assess pain severity: Ensure the drug is appropriate for the level of pain.
• Monitor for respiratory depression: Watch for slowed breathing, especially in opioid‑naïve patients.
• Evaluate liver and kidney function: Adjust use if significant impairment is present.
• Avoid concurrent CNS depressants: Limit use with alcohol, benzodiazepines, or other sedatives.
• Pregnancy and lactation: Use only if clearly needed, after risk‑benefit assessment.
• Store below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Paracodin can interact with several other medicines, altering its effectiveness or safety profile.

Major Interactions (Avoid)

• Other opioids or strong CNS depressants: May cause profound respiratory depression.
• MAO inhibitors: Can precipitate severe hypertension or serotonin syndrome.

Moderate Interactions (Monitor Closely)

• CYP2D6 inhibitors (e.g., fluoxetine, quinidine): May increase dihydrocodeine levels.
• Anticholinergic agents: Can worsen constipation.
• Diuretics: May enhance hypotensive effects.
• Alcohol: Increases sedation and respiratory risk.
• Sedating antihistamines: May add to drowsiness.