Advanced
Technical
In the Industry Vocabulary Test
therapeutic window
Blood concentration range where medication provides optimal benefit with minimal adverse effects.
Full Definition
The therapeutic window represents the range of drug concentrations that produces desired therapeutic effects while minimizing toxicity. In addiction medicine, this concept is particularly relevant for methadone dosing, where concentrations below the window may result in withdrawal symptoms and treatment failure, while concentrations above may cause sedation, respiratory depression, or other adverse effects. Individual variation in metabolism affects each patient's therapeutic window.
Usage
Usage note: Distinguish from therapeutic dose; emphasize concentration vs. amount administered.
In Context
- "The patient's methadone level fell within the therapeutic window at 400ng/mL." — Laboratory interpretation note
- "Dose adjustments aimed to achieve concentrations within the established therapeutic window." — Pharmacokinetic consultation
Also known as
therapeutic range
therapeutic index
Contrasted with
toxic range
subtherapeutic range
Don't confuse with
therapeutic dose
maximum dose
effective dose