**Question:** Following features are true about lipid insoluble beta blockers except-

A. They are highly selective for beta-1 receptors
B. They have a long duration of action
C. They produce bronchoconstriction
D. They are rapidly absorbed from the gastrointestinal tract

**Core Concept:**
Lipid-insoluble beta blockers are a class of medications that cannot dissolve in fats and oils, hence their name. They are typically associated with slower absorption, longer half-lives, and a higher likelihood of producing bronchoconstriction due to their less selective nature.

**Why the Correct Answer is Right:**
Option D is incorrect because rapidly absorbed beta blockers can be considered to be lipid soluble, as they can dissolve in fats and oils. This results in faster onset of action compared to lipid-insoluble beta blockers.

**Why Each Wrong Option is Incorrect:**

A. Lipid-insoluble beta blockers are not highly selective for beta-1 receptors (cardioselective beta blockers are, however).
B. Lipid-insoluble beta blockers have a longer duration of action due to their slower absorption and longer half-life.
C. Lipid-insoluble beta blockers can produce bronchoconstriction due to their less selective nature, affecting beta-2 receptors as well.

**Clinical Pearl:**
Selective beta-1 blockers are designed to minimize cardiovascular side effects, while non-selective beta blockers can lead to bronchoconstriction and other side effects due to their lack of selectivity for beta-1 receptors. Understanding the pharmacokinetic and pharmacodynamic properties of beta blockers is essential for safe and effective prescribing.