**Question:** Which of the following is a side effect of Octreotide?

A. Hyperglycaemia
B. Hypoglycaemia
C. Constipation
D. Weight loss

**Core Concept:** Octreotide is a synthetic analogue of the hormone somatostatin. It is used to treat conditions such as acromegaly, carcinoid syndrome, and gastrointestinal bleeding by inhibiting the release of growth hormone, gastrin, and other peptides.

**Why the Correct Answer is Right:** Octreotide causes a reduction in the release of growth hormone, which leads to a decrease in insulin production by the pancreas. This results in hyperglycaemia (high blood sugar levels).

**Why Each Wrong Option is Incorrect:**

A. Hypoglycaemia (low blood sugar): While Octreotide can cause hyperglycaemia, it does not typically lead to hypoglycaemia due to its effect on growth hormone and insulin release.

B. Hypoglycaemia: As explained above, Octreotide causes hyperglycaemia, not hypoglycaemia.

C. Constipation: Octreotide does not primarily affect intestinal motility or function, so constipation is not a typical side effect.

D. Weight loss: Octreotide can cause hyperglycaemia and hypercalcaemia, which can lead to weight gain rather than loss.

**Clinical Pearl:** Octreotide's mechanism of action is essential knowledge for understanding its potential side effects and clinical use. It is crucial to recognize the balance between beneficial and adverse effects when prescribing medications to ensure appropriate patient care.