Correct Answer: A

Rationale: Levothyroxine is classified as a thyroid preparation because it is a synthetic form of the thyroid hormone thyroxine. It is primarily used to treat hypothyroidism by supplementing or replacing the natural thyroid hormones in the body, helping to regulate metabolism and energy levels.

Correct Answer: D

Rationale: Dizziness and decreased libido are common adverse effects of Venlafaxine. Cough and alopecia are not typical side effects of this medication.

Correct Answer: A

Rationale: The correct answer is A. NRTI antiretroviral medications inhibit the enzyme reverse transcriptase, which is essential for HIV replication. By blocking this enzyme, the medications prevent the virus from replicating and spreading. This mechanism of action helps to control the progression of HIV infection in the body.

Correct Answer: C

Rationale: Filgrastim is known to cause bone pain as a common side effect. Therefore, it is crucial for clients to report any bone pain to their healthcare provider to monitor for potential complications or the need for further management.

Correct Answer: A

Rationale: Verapamil can cause constipation as a side effect. Increasing fiber intake can help prevent constipation. High-fiber foods promote bowel regularity and can counteract the constipating effects of Verapamil.