When using the antitussive Benzonatate, also known as Tessalon Pearls, it is very important to teach the patient to

A medication error refers to any preventable event that may cause or lead to inappropriate medication use or patient harm. In this case, the nurse administering a double dose of medication due to a failure to cut the pill in half is a medication error. It involves the administration of an incorrect dose, which can potentially result in harm or adverse effects for the patient.

The other situations mentioned do not necessarily indicate medication errors. A patient developing hives after starting an IV antibiotic could have an allergic reaction, and appropriate actions should be taken to address the reaction. A patient complaining of severe pain still present after receiving pain medication may require further assessment and intervention to manage their pain effectively. A patient refusing her morning medication is not a medication error but rather a patient's right to refuse treatment, and appropriate documentation and communication should be done in such situations.

Benzonatate is available in capsule form (such as Tessalon Pearls), and it should be swallowed whole. It is important not to chew, crush, or break the capsules as this can cause adverse effects, including local anesthesia in the oral cavity, which can lead to choking or difficulty swallowing. Swallowing the capsule whole ensures that the medication is released properly in the stomach for the desired effect.

The other options mentioned are incorrect:
A. Eating a high-fat meal prior to taking medication: There is no specific requirement to eat a high-fat meal before taking Benzonatate. However, taking it with food or a glass of water may help with ease of swallowing.

B. Taking medication often and whenever a cough is starting: Benzonatate should be taken as directed by the healthcare provider. It is not recommended to take it more frequently or as needed, as it can lead to an overdose or unwanted side effects.

D. Taking medication with orange juice: There is no specific requirement to take Benzonatate with orange juice. It can be taken with water or other non-alcoholic beverages as directed by the healthcare provider.