Carbatrol and Alcohol/Food Interactions
There is 1 alcohol/food/lifestyle interaction with Carbatrol (carbamazepine).
Carbamazepine Food/Lifestyle
Moderate Food Interaction
GENERALLY AVOID: Alcohol may potentiate some of the pharmacologic effects of carbamazepine. Use in combination may result in additive central nervous system depression and/or impairment of judgment, thinking, and psychomotor skills.
In a small, randomized, crossover study, the administration of carbamazepine with grapefruit juice (compared to water) increased plasma drug concentrations by approximately 40%. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruits.
MANAGEMENT: Patients receiving carbamazepine should be advised to avoid or limit consumption of alcohol. Given the drug's narrow therapeutic index, patients receiving carbamazepine therapy should preferably avoid the regular consumption of grapefruits and grapefruit juice to prevent any undue fluctuations in plasma drug levels. Patients should be advised to report signs of carbamazepine toxicity (nausea, visual disturbances, dizziness, or ataxia) to their physicians.
References (3)
- (2002) "Product Information. Tegretol (carbamazepine)." Novartis Pharmaceuticals
- Garg SK, Kumar N, Bhargava VK, Prabhakar SK (1998) "Effect of grapefruit juice on carbamazepine bioavailability in patients with epilepsy." Clin Pharmacol Ther, 64, p. 286-8
- Bailey DG, Dresser GR, Kreeft JH, Munoz C, Freeman DJ, Bend JR (2000) "Grapefruit-felodipine interaction: Effect of unprocessed fruit and probable active ingredients." Clin Pharmacol Ther, 68, p. 468-77
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Carbatrol drug interactions
There are 813 drug interactions with Carbatrol (carbamazepine).
Carbatrol disease interactions
There are 13 disease interactions with Carbatrol (carbamazepine) which include:
- depression
- liver disease
- renal dysfunction
- blood dyscrasias
- history of porphyria
- hyponatremia
- suicidal tendency
- arrhythmias
- anticholinergic effects
- fructose intolerance
- psychosis
- seizures
- thyroid function tests
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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. |
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Further information
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