noun[mass noun] Physiology
The proportion of a drug or other substance which enters the circulation when introduced into the body and so is able to have an active effect.
- These effects may profoundly affect the oral bioavailability of drugs.
- Clinicians and patients should beware of possible reductions in systemic bioavailability of conventional drugs when taken concomitantly with St John's wort.
- Systemic bioavailability secondary to lung bioavailability definitely occurs, but the contribution is insignificant.
- Example sentences
- Vancomycin is poorly bioavailable when administered orally, and for systemic infections the intravenous route is used.
- As with other protein products, predigesting proteins facilitate absorption in the gastrointestinal tract, thus making the amino acids more bioavailable.
- It is not surprising that such complex species are not readily bioavailable, and are therefore not toxic.
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Line breaks: bio|avail¦abil¦ity
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