Prune Flax Protein Smoothie
This creamy smoothie is designed for people on GLP-1 medications, combining gentle fiber, magnesium-rich ingredients, and adequate protein in a small, easy-to-tolerate portion. The blend of prunes, flax, and kefir supports regularity while being mild in flavor and easy on a slowed digestive system.
Ingredients
- 250 ml plain kefir — chilled
- 150 ml water — cold
- 60 g prunes — pitted
- 16 g ground flaxseed — ready to use
- 30 g plain whey protein powder — scooped
- 20 g baby spinach — rinsed optional
Instructions
- Add the kefir and cold water to a blender first to create a liquid base.
- Add the prunes, ground flaxseed, whey protein powder, and baby spinach (if using) on top of the liquids.
- Blend on low speed for 20–30 seconds, then increase to high speed and blend until completely smooth and the flax is well dispersed.
- Let the smoothie sit for 3–5 minutes to allow the flax to begin absorbing liquid and thickening slightly, then blend briefly again and pour into two small glasses.
- Sip slowly over 10–15 minutes, stopping when comfortably full; you can add a splash of extra water if it feels too thick.
Tips for GLP-1 users
If you are very sensitive to fiber on GLP-1 medication, start with half the flaxseed and half the prunes, drink slowly with extra water on the side, and increase the amounts over several days as your gut adjusts.
Using chilled kefir and cold water keeps the flavor mild and the smell low, which can be easier to tolerate if you also experience nausea on GLP-1 therapy.
Build a day around Prune Flax Protein Smoothie
Tell us how eating feels at the moment and we’ll build a day around this recipe.
Step 1 of 3
Please pick one so we know where to start.
Step 2 of 3
Pescatarian plus excluding both fish and shellfish doesn't leave anything to build from — pick one or the other.
Step 3 of 3
We will use this to send your day
We'll email you this day as a PDF, plus a quick intro to Food Signals and our current offer.
Please enter a valid email address.
Food Signals
Your day of meals
Daily Reference Ranges
Dietitian's Note
A lot to work around.
We've built this day inside everything you told us. With this many things to avoid — and a smaller appetite on top — it's worth talking it through with a dietitian who can look at the whole picture with you, especially around protein.
Missing something you'd like to see? Tell us what you'd cook and we'll add recipes that fit.
Thanks — we've got it.
We've emailed an intro to Food Signals, an overview of what it does, and our current offer — with your plan attached as a PDF.
Save this day?
Food Signals is open by waiting list at the moment. Add your details and we'll write to you when your place is ready — then you get 14 days of the whole app, with no card needed.
We never share your email, and you can ask us to delete it any time. Read our privacy policy → Consumer Health Data Privacy Policy
You're on the waiting list
We'll email when your place is ready, and you get 14 days of the whole app, with no card needed.
We're keeping this plan for you.
You're in — welcome!
Taking you straight into the app…
More Constipation recipes
Roasted Pumpkin & Whipped Feta Dip
Roasted Pumpkin & Whipped Feta Dip is a dietician-designed snack built around butternut pumpkin, reduced-fat feta and reduced-fat Greek yoghurt. It's made for GLP-1 medication users managing constipation, with protein kept high and portions sized for a smaller appetite.
Berry Kefir Protein Smoothie
Berry Kefir Protein Smoothie is a dietician-designed snack built around plain kefir, reduced-fat Greek yoghurt and frozen mixed berries. It's made for GLP-1 medication users managing constipation, with protein kept high and portions sized for a smaller appetite.
Cinnamon Matcha Prune Protein Smoothie
This cinnamon-matcha smoothie is designed for GLP-1 users with constipation, combining soluble fiber, hydration, and magnesium-rich ingredients to gently support bowel regularity. It stays easy on the stomach, provides over 20 g protein per serving, and is blended smooth for those with reduced appetite or slower gut motility.