Drug Interaction Report

MONITOR: Magnesium salts may enhance the effects of nondepolarizing neuromuscular blocking agents. One study showed a 25% increase in vecuronium potency after intravenous administration of 40 mg/kg of magnesium sulfate.

MANAGEMENT: Patients should be closely monitored for excessive or prolonged neuromuscular blockade and ventilatory support should be immediately available.

ADJUST DOSING INTERVAL: Bowel cleansing products can increase the gastrointestinal transit rate. Oral medications administered within one hour of the start of administration of the bowel cleansing solution may be flushed from the gastrointestinal tract and not properly absorbed.

MANAGEMENT: Patients should be advised that absorption of oral medications may be impaired during bowel cleansing treatment. Oral medications (e.g., anticonvulsants, oral contraceptives, antidiabetic agents, antibiotics) should not be administered during and within one hour of starting bowel cleansing treatment whenever possible. However, if concomitant use cannot be avoided, monitoring for reduced therapeutic effects may be advisable.