Description

Bristol Dihydrocodeine is a semi-synthetic opioid analgesic used to treat moderate to severe pain and, in some cases, as a cough suppressant or for shortness of breath related to pulmonary conditions. It’s chemically related to codeine but generally considered to be slightly more potent.

Key Information:

• Brand Names: DF118, DHC Continus, Paracodine (cough syrup, in some countries), among others.

• Forms: Tablets, extended-release tablets, liquid, and injectable formulations.

• Common Uses:

  • Moderate to severe pain

  • Chronic pain conditions (e.g., back pain, neuralgia)

  • Cough suppression (less common nowadays)

  • Dyspnea in terminal illness (palliative care)

Pharmacology:

• Class: Opioid analgesic

• Mechanism: Binds to mu-opioid receptors in the central nervous system to reduce the perception of pain and emotional response to pain.

• Onset of action: Typically within 30 to 60 minutes

• Duration: 4 to 6 hours for immediate release; longer for extended-release forms

Side Effects:

• Drowsiness

• Constipation

• Nausea and vomiting

• Dizziness

• Dry mouth

• Respiratory depression (at high doses or in sensitive individuals)

Risks:

• Dependence and addiction: Like other opioids, it carries a risk of physical dependence, tolerance, and addiction.

• Overdose risk: Especially if mixed with alcohol or other CNS depressants.

• Withdrawal symptoms: Can occur if discontinued abruptly after long-term use.

Legal Status:

• Controlled substance in many countries (e.g., Schedule II or III in the U.S., Class B in the UK).

• Often requires a prescription and is subject to strict dispensing regulations.

Let me know if you’re asking about a specific formulation, dosage, medical condition, or legal/regulatory context.