Pharmacist Guide

What’s normal, what’s not, and what gets missed

A pharmacist’s plain-language guide to GLP-1 medication side effects

Maybe the nausea never let up. Maybe you couldn’t keep food down before work, or constipation took over your week. So you stopped. That was a reasonable call.

Now you might be wondering whether that’s the end of it, or whether something could have gone differently. This guide won’t tell you to try again, and it won’t tell you not to. That’s a decision for you and your prescriber. What it will do is help you look back at what happened, so that conversation is a good one.

It’s written by our pharmacist for anyone who stopped a GLP-1 medication.

Why the side effects hit when they did

GLP-1 medications slow down how fast your stomach empties. That’s behind most of the common side effects: nausea, feeling too full, vomiting, diarrhea, constipation, heartburn and bloating.

The two points where side effects are usually strongest. Illustrative, not data.

These tend to be strongest at two points: in the first few weeks, and right after a dose goes up. For many people they ease after that. For some they don’t, and that’s a real answer too. Side effects aren’t a test of willpower, and not tolerating a medication isn’t a failure.

What’s worth knowing is that several things can make side effects worse than they need to be. Those are often the things nobody went through with you.

Look back: what was going on?

This list is for you. Think it through, or jot notes.

When did it start? Right away, or after a dose change?

How fast did the dose go up? Were you moved up on schedule even while you still felt unwell?

How were you eating? Full-size meals, eating quickly, or rich and fried foods often make nausea worse.

How much were you drinking? Low fluids can make both constipation and dizziness worse.

Did you have a plan for constipation, or did it build up before anyone mentioned it?

What else were you taking? Other prescriptions, over-the-counter products or supplements.

Who could you call between visits? Did you have someone to ask, or were you waiting weeks for the next appointment?

Did you know which symptoms were urgent and which were common?

If several of these ring a bell, that’s useful information.

The things that often get missed

When a prescription is set up quickly, these are the pieces we most often find were skipped.

1. The pace of dose changes

Dose increases follow a schedule, but your prescriber can adjust the dose if side effects are hard to manage. Be sure to bring up side effects if you’re experiencing them.

2. Practical eating advice

Smaller meals, eating slowly, stopping when you’re full and going easy on greasy foods help a lot of people. Many never hear this until they’re already struggling. Sometimes spice and alcohol can also trigger side effects.

3. A plan for your gut

That means fluids through the day, fibre added gradually, and help choosing the right over-the-counter product if you need one, before things build up.

4. A medication review

These medications can change how some pills are absorbed. Combined with insulin or certain other diabetes medications, they can raise the risk of low blood sugar.

5. Someone to call

Side effects are easier to work through when you can ask a quick question the same day instead of waiting it out alone.

If you’re thinking about trying again

That’s a conversation to have with your prescriber. A few things to know going in:

Don’t restart on your own, especially at your old dose. If you’ve been off the medication for a while, restarting usually means going back to a lower starting dose. Restarting where you left off can bring the side effects back harder. If you have leftover pens, ask your prescriber or pharmacist before using them.
Bring your look-back notes. What happened, when, and what you’d want done differently.
Ask what support looks like this time. How often you’ll check in, who you can call, and what the plan is if side effects come back.
Ask about all your options. New GLP-1 medications may be available with fewer side effects. There are other options your prescriber can walk you through as well.

When the side effects were serious

Some reasons for stopping are different. If you had any of these, make sure every prescriber you see knows about it, because it may change what’s safe for you:

Pancreatitis, or severe stomach pain that sent you to emergency
Gallbladder problems
An allergic reaction
Vomiting or diarrhea bad enough to cause dehydration or kidney problems

If you stopped for a different reason

If you stopped because of cost, supply, or because you felt it wasn’t doing what you’d hoped, that’s a different conversation. It’s still worth having with your prescriber.

What to do next

If you’d like to go through your look-back notes with someone, our pharmacist can do that with you in person, at our Edmonton pharmacy.

Book a consult with our pharmacist

A private, in-person conversation. No obligation to start anything.

Book online

Central Point Pharmacy · 10382 105 St NW, Edmonton AB
780-250-2616 · info@centralpointpharmacy.com · calendly.com/centralpointrx

General information, not medical advice. Don’t start, restart or change a prescription medication without talking to your prescriber. In an emergency, call 911.