What does drug selectivity mean in pharmacology?

Drug selectivity is a medication’s tendency to act on a particular receptor, tissue, or target more than others, especially at therapeutic doses.

What is off-label drug use?

Off-label use means prescribing an approved drug for a condition, dose, age group, or route of administration not listed in its official labeling.

Why should baseline blood pressure be assessed before giving a medication?

Baseline blood pressure provides a comparison point and helps identify patients at risk for unsafe rises or drops after the medication is given.

Free Course Image Introduction to Pharmacology for fundamentals

Free online course Introduction to Pharmacology for fundamentals

Duration of the online course: 1 hours and 42 minutes

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Build safer medication skills with this free pharmacology course—master drug names, routes, selectivity, placebo, off‑label use, and patient adherence.

In this free course, learn about

Core pharmacology concepts and how drugs produce effects in the body
Selectivity: how drugs target specific receptors/tissues and why it matters
Adherence/compliance: term for a patient's willingness to follow a treatment plan
Placebo definition and its role in research and symptom perception
Importance of baseline BP data before giving antihypertensives/vasoactive drugs
Right assessment vs right evaluation: data collection vs judging response/outcomes
Pain as the “5th vital sign” initiative and its impact on clinical practice
Off-label drug use: prescribing outside FDA-approved indication/age/dose/route
Drug naming: chemical, generic (nonproprietary), brand (trade), and class names
Medical marijuana “nullification”: state non-enforcement despite federal illegality
Medication abbreviations: SC/sub-q meaning subcutaneous administration route

About the free online course

Strengthen your foundations in medication safety and clinical thinking with a beginner-friendly introduction to pharmacology. This free online course in Health focuses on core concepts that help you understand how drugs are identified, chosen, and used in real care settings. Whether you are starting a healthcare program, returning to study, or refreshing essentials for practice, you will gain clarity on the terms and decisions that shape safe treatment.

You will learn how pharmacology language works in day-to-day practice, including the multiple names a medication can have and why those labels matter when communicating, documenting, and avoiding errors. You will also explore key ideas such as selectivity, helping you connect drug actions to intended effects and potential risks. Along the way, the course reinforces patient-centered considerations, including what a placebo is and why expectations can influence outcomes.

Clinical safety depends on more than memorizing terms. This course highlights how to think through baseline assessment before giving medications that can affect blood pressure, and how to separate right assessment from right evaluation when monitoring a patient. It also touches on pain assessment practices that have shaped modern care, helping you see how clinical initiatives influence everyday medication decisions and follow-up.

Because real-world pharmacology includes regulations and common practice exceptions, you will also understand off-label drug use and how to recognize it responsibly. Additional coverage includes foundational abbreviations and administration routes, building your confidence in reading medication orders and translating them into safe action. Short exercises reinforce learning so you can check your understanding, correct misconceptions early, and build a reliable pharmacology vocabulary you can carry into clinical training and practice.

Course content

Video class: Introduction to Pharmacology for Fundamentals | Patho Pharm 1 1h42m
Exercise: _What is selectivity in pharmacology?
Exercise: _What is the correct term used to describe a patient's willingness to follow a treatment plan?
Exercise: _What is the definition of placebo?
Exercise: _Why is it important to assess a patient's baseline data before administering a drug that affects blood pressure?
Exercise: _What is the difference between the right assessment and the right evaluation in pharmacology?
Exercise: _What was the big initiative called a couple of years back that asked healthcare workers to assess pain levels as a vital sign?
Exercise: _What is off-label use of a drug?
Exercise: _What are the different names that a drug can have?
Exercise: _What is nullification in the context of medical marijuana laws?
Exercise: _What does the abbreviation "SC" or "sub-q" stand for?