Top 10 Low Calorie Whey Isolates
Use this guide to compare ten popular low calorie whey isolates options for UK shoppers, with quick reasons to shortlist each one and a side-by-side look at the leading picks.
Editor’s quick picks
- Top pick:Gold Standard 100% Isolate
- Best value:ISO100 Hydrolyzed
- Best for flavour range:Clear Whey Protein
Side-by-side comparison
| 🥇 Optimum Nutrition Gold Standard Isolate | 🥈 Dymatize ISO100 Hydrolyzed | 🥉 Myprotein Clear Whey Protein | |
|---|---|---|---|
| Protein (g) | ~25 | ~25 | ~20 |
| Calories | ~120 | ~116 | ~90 |
| Type | Isolate | Hydrolysate | Isolate |
| Sweetener | Natural & Artificial | Sucralose | Sucralose |
| Sugar/Carb/Fat levels | Low/Low/Low | Very Low/Very Low/Very Low | Very Low/Very Low/Very Low |
| Servings per tub | ~28 | ~28 | ~20 |
| Extras | None | Hydrolysed Whey | Clear Fruit Flavour |
| Value for money | Best Value 4.0/5 | 3.8/5 | 3.7/5 |
| Overall | Very Good | Good | Good |
| Best for | Lean Muscle | Fast Digestion | Refreshing Shake |
| View Product | View Product | View Product |
Serving figures and supporting notes are based on published product information at the time of writing. Any value-for-money scores shown are editorial judgements, not customer ratings.
FAQs
How does isolate differ from whey concentrate?
Whey isolates undergo extra filtration to remove more lactose, fats and carbohydrates than concentrates. This makes isolates higher in protein per calorie but often at a higher price.
Are low‑calorie isolates lactose free?
Many isolates have reduced lactose levels but may still contain trace amounts. Always check labels or choose products labelled lactose free if you are highly sensitive.
Do I need isolate if I’m cutting calories?
Isolates can be a lean choice for those watching calories and carbs, but some people happily use concentrates depending on their budget and macro needs.
Are hydrolysates better than isolates?
Hydrolysed whey proteins are partially broken down for faster absorption. Whether they’re “better” depends on your goals and budget; many choose isolates for everyday use and hydrolysates for special purposes.
Support your workout recovery with sugar‑free BCAAs.
See Sugar‑Free BCAA