Morphin Zur Anwendung Bei Säuglingen, Kindern Und Erwachsenen Merck (Morphine Hydrochloride Trihydrate)

Morphine is an opioid analgesic used to manage severe pain across several clinical settings.

• Severe acute pain: provides rapid relief of intense pain episodes.
• Chronic cancer pain: helps control persistent pain associated with malignancies.
• Postoperative pain: reduces pain following surgical procedures.

• Morphine acts as a full agonist at mu‑opioid receptors in the central nervous system. Binding to these G‑protein‑coupled receptors inhibits adenylate cyclase activity, reduces calcium influx, and increases potassium efflux, leading to decreased neuronal excitability and diminished transmission of nociceptive signals, thereby producing analgesia.

Morphine may cause a range of adverse reactions that vary in frequency and severity.

Common Side Effects

• Nausea: feeling of sickness or urge to vomit.
• Constipation: reduced bowel movements.
• Drowsiness: increased sleepiness or fatigue.
• Dry mouth: reduced salivation.
• Sweating: excessive perspiration.
• Itching: mild skin pruritus.

Serious or Rare Side Effects

• Respiratory depression: slowed or shallow breathing.
• Hypotension: low blood pressure.
• Bradycardia: abnormally slow heart rate.
• Severe allergic reaction: rash, swelling, or anaphylaxis.
• Dependence or addiction: potential for misuse with prolonged use.
• Urinary retention: difficulty emptying the bladder.

When prescribing morphine, clinicians should consider several safety measures.

• Assess pain level: evaluate severity and underlying cause before initiating therapy.
• Monitor respiratory function: watch for signs of depression, especially after dose changes.
• Adjust for renal/hepatic impairment: reduce dose or increase monitoring in patients with organ dysfunction.
• Avoid abrupt discontinuation: taper gradually to prevent withdrawal.
• Use with caution in the elderly: start with lower doses and monitor closely.
• Store below 25°C: keep in the original container, protect from moisture and light.

Morphine can interact with other medications, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Benzodiazepines: combined use may cause profound respiratory depression.
• MAO inhibitors: can precipitate severe hypertension or serotonin syndrome.
• CNS depressants (e.g., barbiturates, alcohol): increase risk of sedation and respiratory compromise.

Moderate Interactions (Monitor Closely):\n- CYP3A4 inhibitors (e.g., ketoconazole): may raise morphine plasma levels.

• CYP3A4 inducers (e.g., rifampin): may reduce analgesic effect.
• Anticholinergics: may exacerbate constipation.