Which drug is an exception and does not require a safety cap?

Nitroglycerin is the exception that does not require a safety cap due to its specific therapeutic use and the risk it poses to patients under certain conditions. Nitroglycerin is commonly prescribed for patients with angina or heart conditions, and it is crucial for them to have immediate access to this medication in case of an emergency.

The lack of a child-resistant cap facilitates rapid access when the patient may be experiencing a serious medical event. In contrast, other medications, such as aspirin and ibuprofen, are often used for common conditions like pain or inflammation and are more likely to be involved in accidental ingestions by children; hence, they typically require safety caps. Acetaminophen, another common over-the-counter medication, also necessitates child-resistant packaging to prevent accidental poisoning in children.

This difference in packaging requirements reflects the balance between safety for children and the practical needs of patients with specific medical conditions requiring immediate access to their medications.