Morfina 2% Braun (Morphine Hydrochloride Trihydrate)

Morphine, an opioid analgesic, is used for pain management across several clinical settings.

• Severe acute pain: provides rapid relief of intense pain episodes.
• Post‑operative pain: reduces pain following surgical procedures.
• Cancer pain: controls persistent malignant pain.
• Labor analgesia: offers effective analgesia during childbirth.
• Chronic pain requiring opioid therapy: maintains baseline pain control in selected patients.

• Morphine acts as a full agonist at mu‑opioid receptors located in the central nervous system and spinal cord. Activation of these G‑protein‑coupled receptors inhibits the release of excitatory neurotransmitters, reduces ascending nociceptive transmission, raises the pain threshold, and alters the perception of pain, resulting in analgesia.

Morphine may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Nausea: feeling of queasiness often occurring shortly after administration.
• Vomiting: forceful expulsion of stomach contents.
• Constipation: reduced bowel motility leading to hard stools.
• Drowsiness: increased sleepiness or reduced alertness.
• Pruritus: itching, especially around the face and neck.
• Sweating: excessive perspiration unrelated to temperature.

Serious or Rare Side Effects

• Respiratory depression: slowed or shallow breathing that can be life‑threatening.
• Severe hypotension: marked drop in blood pressure causing dizziness or fainting.
• Addiction or dependence: development of physical or psychological reliance on the drug.

When using morphine, clinicians should observe several safety measures.

• Assess pain level before initiating therapy: determine baseline severity and goals.
• Monitor respiratory function regularly: watch for reduced rate or depth of breathing.
• Adjust dose in renal or hepatic impairment: reduce dosage or increase interval as needed.
• Avoid use with other central nervous system depressants: limit concurrent benzodiazepines or barbiturates.
• Use caution in elderly or debilitated patients: start with lower doses and titrate slowly.
• Store at controlled room temperature: keep in original container, protect from light and moisture.

Morphine interacts with several drug classes that can modify its safety or efficacy.

Major Interactions (Avoid)

• Other opioids: additive respiratory depression and sedation.
• Central nervous system depressants (e.g., benzodiazepines, alcohol): heightened risk of profound sedation.
• Monoamine oxidase inhibitors (MAOIs): can precipitate severe hypertension or serotonin syndrome.

Moderate Interactions (Monitor Closely)

• CYP3A4 inhibitors (e.g., erythromycin, ketoconazole): may increase morphine plasma levels.
• CYP3A4 inducers (e.g., rifampin, carbamazepine): may reduce analgesic effect.
• Drugs that prolong QT interval: monitor cardiac rhythm for arrhythmias.