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Drug titration
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Drug titration

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Therapeutic (green) and side effect dose response curves (red) illustrating a typical starting and progressively increasing titrated doses (arrows).

Drug titration is the process of adjusting the dose of a medication for the maximum benefit without adverse effects.

When a drug has a narrow therapeutic index, titration is especially important, because the range between the dose at which a drug is effective and the dose at which side effects occur is small. Some examples of the types of drugs commonly requiring titration include insulin, anticonvulsants, blood thinners, anti-depressants, stimulants for ADHD and sedatives.

Titrating off of a medication instead of stopping abruptly is recommended in some situations. Glucocorticoids should be tapered after extended use to avoid adrenal insufficiency.

Drug titration is also used in phase I of clinical trials. The experimental drug is given in increasing dosages until side effects become intolerable. A clinical trial in which a suitable dose is found is called a dose-ranging study.

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