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How long does it take to get Tegretol out of your system?

Medically reviewed by Last updated on Feb 2, 2023.

Official answer


Approximately 93.5 hours (4 days). It takes 5.5 x elimination half-lifes for a medicine to be cleared from ones system. The elimination half-life of Tegretol varies depending on whether it is initial dose or repeated dosing. Initial half-life values range from 25-65 hours, decreasing to 12-17 hours on repeated doses. Tegretol is metabolized in the liver. If you had been taking Tegretol for a while then the expected time for Tegretol to clear from your system would be approximately 93.5 hours (5.5 x 17 hours).

Tegretol (carbamazepine) is an anticonvulsant. It works by decreasing nerve impulses that cause seizures and pain.

Tegretol is used to treat certain types of seizures (partial, tonic-clonic, mixed). It is also used to treat nerve pain such as trigeminal neuralgia and glossopharyngeal neuralgia.

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