**Core Concept**
Heparin is a fast-acting anticoagulant that works by enhancing antithrombin III activity, leading to inhibition of thrombin and factor Xa. It is widely used in thromboembolic disorders and has well-documented side effects related to its pharmacodynamic actions.

**Why the Correct Answer is Right**
Heparin does not cause hypokalemia. Instead, it promotes the release of lipoprotein lipase (option C), which helps in lipid metabolism, and is non-teratogenic (option B). Heparin can cause alopecia (option A) due to its effect on platelet function and vascular integrity, particularly with prolonged use. Hypokalemia is not a known or consistent side effect of heparin therapy.

**Why Each Wrong Option is Incorrect**
Option A: Heparin can cause alopecia due to its interference with platelet aggregation and microcirculation, especially in high-dose or prolonged use.
Option B: Heparin is non-teratogenic and is considered safe in pregnancy, unlike some other anticoagulants.
Option C: Heparin stimulates lipoprotein lipase release from adipose tissue, enhancing triglyceride clearance.

**Clinical Pearl / High-Yield Fact**
Heparin is a potent anticoagulant with a unique mechanism involving antithrombin III; it is not associated with hypokalemia, and patients should be monitored for bleeding risk, not electrolyte imbalances.

✓ Correct Answer: D. Causes Hypokalemia