Slush drinks are a favourite summertime treat, especially for children — colourful, icy, and fun to drink. But recent concerns about glycerol, an ingredient used in many slushie products, have raised questions for parents and retailers alike. Is it safe? Should you avoid it? And why is it used in the first place?
This blog breaks down what glycerol does, the risks and benefits associated with it, and what current guidance says — so you can make informed choices without the hype.
What Is Glycerol and Why Is It in Slush Drinks?
Glycerol (also called glycerine) is a naturally occurring compound often used in food and drink as a sweetener and texture enhancer. In slush drinks, it serves a specific purpose:
👉 It prevents the mixture from freezing into a solid block, giving slushies their signature semi-frozen, spoonable consistency.
Because glycerol can replace sugar, it’s commonly found in “low sugar” or “sugar-free” slushies. That can sound like a healthier option — and in many cases, it is.
What Are the Risks?
While glycerol is widely regarded as safe for general consumption, newer studies and case reports have shown that in young children, especially under 8 years old, high intake can lead to serious side effects. These can include:
- Hypoglycaemia (low blood sugar)
- Nausea and vomiting
- Drowsiness or loss of consciousness
- Seizures in rare cases
These symptoms are associated with what’s now referred to as glycerol intoxication, usually following the rapid consumption of a large amount of slush by small children. One study recorded 21 cases in the UK and Ireland where children aged 2 to 7 required emergency treatment after consuming slush drinks containing glycerol.
All children recovered fully, but the findings have prompted doctors and researchers to call for clearer guidance.
What Does the FSA Recommend?
The UK Food Standards Agency (FSA) currently advises that:
- Children under 4 years old should not consume slushie drinks containing glycerol.
- Children under 11 should have no more than one glycerol-containing slushie per day.
- Retailers are encouraged to inform parents of this advice at the point of sale.
Importantly, this is guidance — not a ban — and is aimed at helping parents make decisions based on age and portion size. The advice is still under review as more data becomes available.
The Benefits of Glycerol: A Balanced Perspective
It’s important to remember that glycerol isn’t inherently harmful. In fact, it offers several advantages in food products, especially frozen drinks:
- Improved texture and pourability
- Reduced need for added sugars
- Lower freezing point, allowing the slushie to maintain its semi-frozen form
For older children, teens, and adults, slushies with glycerol are generally safe when consumed in moderation. Many countries with higher sugar content in slushies don’t use glycerol at all — but may face other health trade-offs related to high sugar consumption.
What Parents Can Do
If you’re a parent, here’s how to enjoy slushies safely:
- Check labels or ask if the slush contains glycerol
- Follow age guidelines — avoid glycerol for under-4s, and limit for younger kids
- Encourage slower consumption and smaller portions
- Consider making homemade slushies using products that are glycerol-free
Conclusion: Informed Choices Are the Coolest
Glycerol in slush drinks isn’t inherently bad — it plays a practical role and offers some benefits. But for very young children, moderation and awareness are key. As with most things, balance is best.
At Florida Syrups, we stay informed on industry developments and food safety so we can keep delivering products that are fun, flavourful, and family-friendly. Always check product information, and if in doubt, homemade slush is a great alternative.
To suit all preferences, we will be offering both glycerol and glycerol-free slush drink options — so you can choose what works best for your household.
