Registered Practical Nurse (RPN) Practice Test

What is the consequence of a potent drug needing to produce a therapeutic effect?

1. It should be given in a high dose

2. It can be given at a lower dose

3. It should not be used

4. It leads to dependency

The correct answer is: It can be given at a lower dose

A potent drug is defined as one that produces significant therapeutic effects even at lower doses. This characteristic allows for effective treatment while minimizing the risks of side effects associated with higher doses. The therapeutic index of a potent drug typically means that it requires a smaller amount to achieve desired effects compared to less potent drugs. This is particularly important in pharmacology because utilizing lower doses can help reduce the likelihood of adverse reactions and toxicity. Therefore, the correct answer indicates that a potent drug can be effective and achieve its therapeutic goals without necessitating high doses. In clinical practice, this principle is crucial not only for patient safety but also for enhancing overall treatment efficacy.