Drug Interactions between Magsal and Zegerid
This report displays the potential drug interactions for the following 2 drugs:
- Magsal (magnesium salicylate/phenyltoloxamine)
- Zegerid (omeprazole/sodium bicarbonate)
Interactions between your drugs
sodium bicarbonate magnesium salicylate
Applies to: Zegerid (omeprazole / sodium bicarbonate) and Magsal (magnesium salicylate / phenyltoloxamine)
MONITOR: Agents that cause urinary alkalinization can reduce serum salicylate concentrations in patients receiving anti-inflammatory dosages of aspirin or other salicylates. The mechanism involves reduction in salicylate renal tubular reabsorption due to increased urinary pH, resulting in increased renal salicylate clearance especially above urine pH of 7. This interaction is sometimes exploited in the treatment of salicylate toxicity.
MANAGEMENT: Patients treated chronically with urinary alkalinizers and large doses of salicylates (i.e. 3 g/day or more) should be monitored for potentially diminished or inadequate analgesic and anti-inflammatory effects, and the salicylate dosage adjusted if necessary.
References
- Berg KJ (1977) "Acute acetylsalicylic acid poisoning: treatment with forced alkaline diuresis and diuretics." Eur J Clin Pharmacol, 12, p. 111-6
- Prescott LF, Balali-Mood M, Critchley JA, Johnstone AF, Proudfoot AT (1982) "Diuresis or urinary alkalinisation for salicylate poisoning?" Br Med J (Clin Res Ed), 285, p. 1383-6
- Balali-Mood M, Prescott LF (1980) "Failure of alkaline diuresis to enhance diflunisal elimination." Br J Clin Pharmacol, 10, p. 163-5
- Berg KJ (1977) "Acute effects of acetylsalicylic acid in patients with chronic renal insufficiency." Eur J Clin Pharmacol, 11, p. 111-6
- Brouwers JRBJ, Desmet PAGM (1994) "Pharmacokinetic-pharmacodynamic drug interactions with nonsteroidal anti-inflammatory drugs." Clin Pharmacokinet, 27, p. 462-85
omeprazole magnesium salicylate
Applies to: Zegerid (omeprazole / sodium bicarbonate) and Magsal (magnesium salicylate / phenyltoloxamine)
Coadministration with proton pump inhibitors may decrease the oral bioavailability of aspirin and other salicylates. The interaction has been studied with omeprazole and aspirin, although data are conflicting. In one study, pretreatment with omeprazole (20 mg/day for 2 days) in 11 healthy volunteers led to a significant and progressively greater reduction in the mean serum salicylate level at 30, 60, and 90 minutes after administration of aspirin (650 mg single dose). The investigators suggest that acid suppression may reduce the lipophilic nature of aspirin, thereby adversely affecting its absorption from the gastrointestinal tract. Another study found no effect of omeprazole pretreatment (20 mg/day for 4 days) on plasma salicylate and aspirin levels, skin bleeding times, or antiplatelet effect of low-dose aspirin (125 mg single dose) in 14 healthy volunteers. However, these results do not exclude the possibility that omeprazole might interfere with the analgesic, antipyretic, or anti-inflammatory effects of aspirin, which has been demonstrated in rats.
Proton pump inhibitors may enhance the release rate of salicylates from enteric-coated formulations due to premature disruption of the coating and intragastric release of the drug secondary to an increase in gastric pH. In eight healthy volunteers, omeprazole pretreatment (20 mg/day for 4 days) did not affect the bioavailability of salicylate from uncoated aspirin tablets but significantly increased the absorption rate of salicylate from enteric-coated sodium salicylate tablets. The clinical significance of this interaction is unknown. Theoretically, it may increase the risk of gastric adverse effects associated with salicylates.
References
- Nefesoglu FZ, Ayanoglu-Dulger G, Ulusoy NB, Imeryuz N (1998) "Interaction of omeprazole with enteric-coated salicylate tablets." Int J Clin Pharmacol Ther, 36, p. 549-53
- Anand BS, Sanduja SK, Lichetenberger LM (1999) "Effect of omeprazole on the bioavailability of aspirin: a randomized controlled study on healthy volunteers." Gastroenterology, 116, A371
- Inarrea P, Esteva F, Cornudella R, Lanas A (2000) "Omeprazole does not interfere with the antiplatelet effect of low-dose aspirin in man." Scand J Gastroenterol, 35, p. 242-6
Drug and food interactions
phenyltoloxamine food
Applies to: Magsal (magnesium salicylate / phenyltoloxamine)
GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of CNS-active agents. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.
MANAGEMENT: Patients receiving CNS-active agents should be warned of this interaction and advised to avoid or limit consumption of alcohol. Ambulatory patients should be counseled to avoid hazardous activities requiring complete mental alertness and motor coordination until they know how these agents affect them, and to notify their physician if they experience excessive or prolonged CNS effects that interfere with their normal activities.
References
- Warrington SJ, Ankier SI, Turner P (1986) "Evaluation of possible interactions between ethanol and trazodone or amitriptyline." Neuropsychobiology, 15, p. 31-7
- Gilman AG, eds., Nies AS, Rall TW, Taylor P (1990) "Goodman and Gilman's the Pharmacological Basis of Therapeutics." New York, NY: Pergamon Press Inc.
- (2012) "Product Information. Fycompa (perampanel)." Eisai Inc
- (2015) "Product Information. Rexulti (brexpiprazole)." Otsuka American Pharmaceuticals Inc
magnesium salicylate food
Applies to: Magsal (magnesium salicylate / phenyltoloxamine)
GENERALLY AVOID: The concurrent use of aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) and ethanol may lead to gastrointestinal (GI) blood loss. The mechanism may be due to a combined local effect as well as inhibition of prostaglandins leading to decreased integrity of the GI lining.
MANAGEMENT: Patients should be counseled on this potential interaction and advised to refrain from alcohol consumption while taking aspirin or NSAIDs.
References
- (2002) "Product Information. Motrin (ibuprofen)." Pharmacia and Upjohn
Therapeutic duplication warnings
No warnings were found for your selected drugs.
Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
See also
Drug Interaction Classification
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
No interaction information available. |
Further information
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