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morphine sulfate injection, USP VIAL Adverse Reactions


The following serious adverse reactions are described, or described in greater detail, in other sections:

The following adverse reactions associated with the use of morphine were identified in clinical studies or postmarketing reports. Because some of these reactions were reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

The most serious adverse reactions encountered during administration of preservative-free morphine sulfate injection were respiratory depression and/or respiratory arrest.

Cardiovascular System: While low doses of intravenously administered morphine have little effect on cardiovascular stability, high doses are excitatory, resulting from sympathetic hyperactivity and increase in circulating catecholamines.

Central Nervous System: myoclonus, seizures, dysphoric reactions, toxic psychosis, dizziness, euphoria, anxiety, confusion, headache. Lumbar puncture-type headache is encountered in a significant minority of cases for several days following intrathecal catheter implantation and generally responds to bed rest and/or other conventional therapy.

Gastrointestinal System: Nausea, vomiting, constipation

Skin: Generalized pruritus, urticaria, wheals, and/or local tissue irritation. Single-dose epidural or intrathecal administration is accompanied by a high incidence of dose-related generalized pruritus.

Urinary System: Urinary retention, oliguria.

Peripheral edema: There are several reports of peripheral edema

Other: Other adverse reactions reported following morphine therapy include depression of cough reflex, interference with thermal regulation, peripheral edema.

Serotonin syndrome: Cases of serotonin syndrome, a potentially life-threatening condition, have been reported during concomitant use of opioids with serotonergic drugs.

Adrenal insufficiency: Cases of adrenal insufficiency have been reported with opioid use, more often following greater than one month of use.

Anaphylaxis: Anaphylaxis has been reported with ingredients contained in preservative-free morphine sulfate injection.

Androgen deficiency: Cases of androgen deficiency have occurred with chronic use of opioids [see Clinical Pharmacology (12.2)].

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