From Facts to Practice

Introduction

While I have always envisioned writing a book for junior pharmacists to help them navigate their new careers, I hesitated because I needed a unique angle.

• I wanted to provide extra value beyond what already exists in standard pharmacy textbooks.

Recently, I was validating the medication counseling skills of fresh provisional registered pharmacists (PRPs) on insulin injection techniques, using the checklists from the Garis Panduan Kaunseling Ubat-ubatan 2025.

• While the information in the guide is factually complete, it lacks clinical insight - the "why" behind the facts.
• Because these insights are missing, most PRPs resort to memorizing factual information instead of truly making sense of it.

Beyond Memorization

Consider administration times. Guidelines state that we should inject short-acting regular human insulin 30 minutes before meals, whereas rapid-acting insulin analogues can be injected 0-15 minutes before, or immediately after, meals.

If we only memorize this, we miss the practical application for the patient.

• The clinical insight here is about lifestyle: while rapid-acting insulin analogues may be more costly, they offer the patient far more flexibility and convenience, sparing them the strict routine of injecting and waiting 30 minutes before eating.

The Danger of Generic Advice

Another surprising observation arose regarding the in-use shelf life of opened insulin cartridges.

• Many PRPs quickly responded that opened insulin must be used within 28 to 42 days.
• However, they overlooked the critical fact that individual product information should dictate our advice.

Relying on a generic "28-42 days" rule is unprofessional and potentially dangerous.

• Patients might falsely believe that all insulins are viable for up to 42 days.
• While checklists often include a generic reminder to "refer to the product leaflet," providing clear, specific examples of in-use shelf lives adds much more practical value.

Navigating Special Populations with Nuance

The special considerations section of the guideline - covering pregnancy, breastfeeding, the elderly, and pediatrics - is excellent, but the sheer volume of unfiltered facts can cause PRPs to miss the essential takeaways.

Pregnancy

The text notes that insulin is the "gold standard" for managing gestational diabetes mellitus (GDM) and type 2 diabetes during pregnancy.

• However, some PRPs harbor the misconception that insulin analogues are less safe than regular and intermediate human insulin.
• While it is true that randomized controlled trials on pregnant women are restricted, pharmacists must recognize that insulin has always been the cornerstone of GDM management, alongside the more recently proven safety of oral metformin.

Breastfeeding

The guideline states, "Exogenous insulin has been detected in human milk, including biosynthetic insulin. Insulin is not absorbed by the infant but may have beneficial local activity in the gastrointestinal tract."

• This sounds complex, but the clinical insight is simple: insulin is a pH-sensitive protein.
• It degrades in the stomach's acidic environment.
• This is exactly why insulin cannot be taken orally and must be administered via subcutaneous injection (or inhalation).

Pediatrics

The guideline highlights a lack of established safety data for certain human insulin analogues in children.

• Yet, the broader clinical context is that Type 1 Diabetes Mellitus involves an absolute lack of insulin secretion.
• Therefore, managing this disease from a very young age with supplemental insulin is both common and essential.

The Elderly

The guideline suggest evaluating factors like manual dexterity, hand strength, tremors, vision, and cognition.

• The real clinical insight is knowing how to evaluate this. We don't just ask them; we observe.
• When an elderly patient sits in front of us, we ask them to demonstrate their technique. During this demonstration, we actively observe if their hands are shaky, if they can remember the steps independently, or if vision issues prevent them from dialing the correct dose.

Moving Beyond the Checklist

While PRPs are validated against checklists, they tend to artificially restrict their knowledge to what is explicitly written on the page.

• Checklists provide a great overview, but they are a poor strategy for conveying complex information.

For example, many PRPs miss crucial information regarding injection sites because it is not heavily emphasized in the checklist.

• They fail to counsel that absorption rates for regular and intermediate-acting insulin are site-specific (the abdomen is preferred for faster absorption, while the thigh or buttocks are preferred for intermediate-acting insulin).
• Conversely, rapid and long-acting analogues can be injected at any site, as their absorption rates are not site-specific.

Furthermore, many fail to explain why we rotate sites: to prevent lipohypertrophy, which drastically reduces the absorption and effectiveness of the injected insulin.

The Path Forward

Medication counseling is not just about how deep our factual knowledge goes; it is about how effectively we translate those facts into practical use.

• There are many more points left to discuss, but I hope this illustrates the profound lack of clinical insight that currently ties all our factual information together.
• Bridging this gap is an exciting direction to explore, should I ever choose to write a pharmacy book.