An orally administered drug that is not absorbed from the GI tract will have distribution to which tissue compartments?

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Multiple Choice

An orally administered drug that is not absorbed from the GI tract will have distribution to which tissue compartments?

Explanation:
The key idea is that distribution to body tissues depends on the drug being in the bloodstream. An orally administered drug that is not absorbed into the circulation cannot reach distant tissue compartments like liver, brain, or muscle. Without absorption, it stays in the gastrointestinal lumen and may be excreted, but it does not distribute to systemic tissue compartments. The brain, for example, would also require crossing the blood–brain barrier, which can’t happen if the drug isn’t absorbed into the blood. So, there is no distribution to tissue compartments in this scenario.

The key idea is that distribution to body tissues depends on the drug being in the bloodstream. An orally administered drug that is not absorbed into the circulation cannot reach distant tissue compartments like liver, brain, or muscle. Without absorption, it stays in the gastrointestinal lumen and may be excreted, but it does not distribute to systemic tissue compartments. The brain, for example, would also require crossing the blood–brain barrier, which can’t happen if the drug isn’t absorbed into the blood. So, there is no distribution to tissue compartments in this scenario.

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