If a drug is having Vd = 60L it indicates that drug is
**Core Concept**
The **Volume of Distribution (Vd)** is a pharmacokinetic parameter that reflects the distribution of a drug between the plasma and the rest of the body tissues. A high Vd value indicates that the drug is highly distributed to tissues, while a low Vd value indicates that the drug remains mainly in the plasma.
**Why the Correct Answer is Right**
A Vd of 60L suggests that the drug is highly lipophilic and has a high affinity for tissues, resulting in a large distribution volume. This is because the total blood volume in an average adult is approximately 5L, and a Vd of 60L implies that the drug is concentrated more in tissues than in plasma.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, so we cannot assess its correctness.
**Option B:** This option is also not provided.
**Option C:** Similarly, this option is missing.
**Option D:** Without the actual options, it's impossible to comment on their accuracy.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that drugs with a high Vd tend to have a longer half-life due to the slow release of the drug from tissues back into the plasma, where it can be eliminated.
**Correct Answer:** Correct Answer: D. Highly tissue bound.