Florida Pharmacy Technician Certification Practice Test 2025 - Free Pharmacy Tech Practice Questions and Study Guide

The correct interpretation of the prescription sig "i-ii tsp po q 4h prn" is indeed "Take 1 to 2 teaspoonsful by mouth every 4 hours as needed."

In this order, "i-ii" refers to the number of teaspoons, indicating a range from one to two. The abbreviation "tsp" confirms that the measurement is in teaspoons. The term "po" stands for "per os," which means by mouth, specifying the route of administration. The "q 4h" indicates that the medication should be taken every 4 hours, and "prn" means as needed, suggesting that the medication isn't required at set intervals but rather when the patient feels it is necessary.

This contextual understanding ensures accurate interpretation of prescription instructions, which is vital for safe and effective medication administration. The other options misinterpret the abbreviations or measurement units used in the sig, leading to incorrect dosage or administration routes. For example, options that suggest puffs or milliliters do not reflect the teaspoon measurement specified in the order.