Quick Review Summary
Impact Diet Whey is a high-protein, low-carb shake designed for people cutting calories who want to keep their muscle. It’s a strong pick for fat loss phases, and a decent (not ideal) pick for pure muscle gain.
| At a glance | Details |
|---|---|
| Protein per serving | About 35g (33–38g depending on flavour) |
| Calories per serving | About 214 kcal |
| Carbs/sugar | 7.5g / 2.6g |
| Serving size | 60g (2 scoops) |
| Added extras | Green tea extract, CLA |
| Servings per 1kg | About 16–17 |
| Typical price (2.2 lb / 1kg) | About $75 list; as low as ~$33 at some US retailers |
| Customer rating | 4.47/5 on Myprotein |
| Best for | Cutting, weight loss, busy days |
Bottom line: Buy it if you want one filling, high-protein shake that fits a calorie deficit. Skip it if you’re bulking on a tight budget. standard whey gives similar protein value with fewer calories spent on extras.
Check today’s price on Impact Diet Whey on Amazon →
In this Impact Diet Whey review, we will explore its effectiveness and value for those looking to enhance their fitness journey.
As you read this Impact Diet Whey review, consider how it fits into your overall nutrition plan.
Introduction: Is Impact Diet Whey Right for You?
Building muscle takes more than lifting. You also need enough protein every day, and that’s hard when you don’t have time to plan and cook meals.
Maybe you train hard, but your progress has stalled. Or you’re trying to lose fat without losing the muscle you worked for.
That’s the problem Impact Diet Whey from Myprotein is built to solve. It packs a big dose of protein into one low-carb shake you can make in 30 seconds.
This Impact Diet Whey review breaks down what’s inside, how it performs, what it costs per serving, and who should buy it. It’s based on the published label, retailer listings, and customer ratings. not personal testing.
What you’ll get from this guide:
- A clear look at the nutrition and added ingredients
- How it compares to regular whey protein
- Real cost per 10g of protein
- A simple plan to break through a muscle-building plateau
Features Overview
Impact Diet Whey is a whey protein powder with fewer carbs than many “meal” shakes, plus a few added diet-support ingredients. It’s suitable for vegetarians.
Nutrition per Serving
Here’s the label for one 60g serving (Myprotein Cookies Nutrient Per Serving, per Holland & Barrett):
| Nutrient | Per 60g serving | Per 100g |
|---|---|---|
| Energy | 214 kcal | 357 kcal |
| Protein | 35g | 59g |
| Carbohydrates | 7.5g | 12g |
| Sugars | 2.6g | 4.4g |
| Fat | 3.7g | 6.2g |
| Saturates | 1.6g | 2.7g |
| Salt | 0.21g | 0.35g |
Protein varies a little by flavour. Myprotein lists a range of 33–38g per serving across its versions.
Added Diet Ingredients
The “diet” part comes from two extras:
- Green tea extract. about 27–29mg of EGCG per serving, depending on flavour
- CLA (conjugated linoleic acid). a fatty acid often sold for body composition
Be realistic about these. Research on both shows small effects at best, so think of them as a bonus. the protein and calorie control do the heavy lifting.
Flavours and Sizes
- Flavours: Chocolate, Cookies & Cream, Strawberry Shortcake, Natural Vanilla (availability varies by country)
- Sizes: 250g, 600g, 1kg, and 2.5kg tubs or pouches
- Servings: about 4 (250g), 16–17 (1kg), 42 (2.5kg)
Safety Notes
Because it contains green tea extract, the label carries a few warnings:
- Don't take it on an empty stomach.
- Don't combine it with other green tea products.
- Not for pregnant or breastfeeding women, or anyone under 18
- Stay under 800mg of EGCG per day from all sources.
See Impact Diet Whey flavours and sizes on Amazon →
Performance Analysis
On paper, Impact Diet Whey performs best during a calorie deficit. Its job is to protect muscle and keep you full, not to add size fast.
Muscle Building and Retention
Most sports nutrition research points to about 1.6g of protein per kg of bodyweight per day for muscle growth. For an 80kg (176 lb) person, that’s roughly 130g a day.
One shake covers about 35g. over a quarter of that target. That makes it easier to hit your number without cooking an extra meal.
Fat Loss Support
Protein is the most filling macronutrient. A 214-calorie shake with 35g of protein can replace a higher-calorie snack and curb hunger between meals.
The low carb and sugar count also makes it easy to fit into most diet plans. Remember: the calorie deficit drives fat loss, not the green tea or CLA.
Impact Diet Whey vs. Regular Impact Whey
This is the comparison most buyers need. Pick based on your goal.
| Feature | Impact Diet Whey | Impact Whey Protein |
|---|---|---|
| Serving size | 60g (2 scoops) | 25g (1 scoop) |
| Protein per serving | ~35g | ~20g |
| Calories per serving | ~214 kcal | ~100 kcal |
| Protein content | ~59% | ~80% |
| Added extras | Green tea, CLA | None |
| Best for | Cutting, meal-sized snack | Muscle gain, flexible use |
Takeaway: Regular Impact Whey is a purer protein source on a per-gram basis. Diet Whey is the better pick if you want one bigger, more filling shake while dieting.
Pros and Cons
The strengths are high protein per shake and easy calorie control. The weaknesses are the larger serving and the extras you may not need.
| Pros | Cons |
|---|---|
| ~35g protein in one shake | 60g serving uses tubs up fast (~16 shakes per kg) |
| Low carb (7.5g) and low sugar (2.6g) | Only ~59% protein. less pure than standard whey |
| Filling enough to replace a snack | Green tea and CLA add little proven benefit |
| Vegetarian-friendly | Label warnings limit who can use it |
| Sales and third-party sellers can cut the price sharply | List price is high if you pay full price |
| Multiple flavours and tub sizes | Contains milk; some versions may contain gluten |
User Experience
Customer feedback is mostly positive. Impact Diet Whey has an average rating of 4.47/5 on Myprotein’s site, and Holland & Barrett buyers rate the Strawberry Shortcake flavour 4.3/5 based on 30 reviews.
What Buyers Like
- Taste: Reviewers often praise the flavour and smooth texture
- Mixing: Many say it mixes easily with water or milk
- Convenience: Several use it as a fast breakfast or pre-gym snack
What to Keep in Mind
- Two scoops per serving: You'll need a full-size shaker, not a mini one
- Thicker shake: 60g of powder makes a heavier drink than a single scoop of whey
- Sweetened taste: Like most flavoured proteins, it uses sweeteners. some people find this too sweet
How to Use It (Time-Saving Plan)
If meal prep is your biggest struggle, use the shake to fill the gaps. not to replace every meal. Here’s a simple high-protein day for an 80kg lifter aiming for ~130g:
| Time | Meal | Protein |
|---|---|---|
| Breakfast | Diet Whey shake + banana | ~36g |
| Lunch | Chicken wrap or tuna salad | ~35g |
| Afternoon | Greek yogurt cup | ~15g |
| Dinner | Lean meat or tofu, rice, vegetables | ~40g |
| Total | ~126g |
3 Quick Ways to Use It
- Overnight oats: Stir one serving into 40g oats with milk; refrigerate overnight
- Protein yogurt bowl: Mix half a serving into Greek yogurt with berries
- Post-workout shake: Blend with ice and milk within a couple of hours of training
Always eat something alongside it. the label advises against taking it on an empty stomach.
Value for Money
At US list price (about $75 for 2.2 lb), Impact Diet Whey costs more than twice as much per gram of protein as regular Impact Whey on sale. Bought at a discount, that gap almost disappears.
The fairest way to compare is cost per 10g of protein. Here’s how the main options stack up (US prices, October 2026. prices change often):
| Option | Price | Total protein | Cost per 10g protein |
|---|---|---|---|
| Impact Whey, 65 servings, Myprotein US sale | $74.19 | ~1,300–1,430g | ~$0.52–$0.57 |
| Diet Whey 2.2 lb, third-party US retailer | $32.99 | ~590g | ~$0.56 |
| Diet Whey 2.2 lb, Myprotein US list price | $74.99 | ~590g | ~$1.27 |
Per shake, that’s about $2.00 at the lower price versus roughly $4.50 at full list price.
How to Get the Best Value
- Never pay list price. Myprotein's US site runs discounts most weeks.
- Compare Amazon and other retailers. Third-party sellers often beat the brand's own price.
- Check the label. US and UK recipes can differ slightly, so confirm the nutrition panel before you buy
Check the latest Impact Diet Whey deal on Amazon →
Stuck on a Plateau? Pair the Shake With Progressive Overload
No protein powder fixes a plateau on its own. Muscles grow when you give them a reason to. a slowly increasing training load. plus enough protein and recovery.
Progressive Overload in 5 Steps
- Pick 4–6 main lifts. Squat, deadlift or hip thrust, bench press, overhead press, rows, and pull-ups cover most muscles.
- Choose a rep range. For example, 3 sets of 8–12 reps.
- Log every session. Write down the weight and reps. a notes app works fine.
- Use "double progression." Add reps until you hit 12 on every set. Then add the smallest weight jump (2.5–5 lb or 1–2.5kg) and start back at 8.
- Train close to failure. End most sets with only 1–3 reps left in the tank.
A Simple 3-Day Starter Plan
| Day | Workout | Sets × reps |
|---|---|---|
| Monday | Squat, bench press, row, plank | 3 × 8–12 each |
| Wednesday | Deadlift, overhead press, pull-ups, lunges | 3 × 8–12 each |
| Friday | Leg press, incline press, cable row, curls | 3 × 8–12 each |
Plateau Checklist
- Am I adding reps or weight at least every 1–2 weeks?
- Am I eating about 1.6g of protein per kg of bodyweight daily?
- Am I sleeping 7–9 hours most nights?
- If my goal is size, am I eating in a small calorie surplus?
Tip: If you’re bulking, regular whey gives you more protein per calorie. Save Diet Whey for cutting phases, when its fullness and low carbs help most.
Frequently Asked Questions
Is Impact Diet Whey good for building muscle?
Yes, it supports muscle growth thanks to ~35g of protein per serving. But for bulking, regular whey gives more protein per calorie and per dollar spent.
Does Impact Diet Whey help you lose weight?
It can help by keeping you full on few calories. Weight loss still depends on an overall calorie deficit.
How many shakes a day can I have?
One or two is typical. Each contains green tea extract, so don’t combine it with other green tea products or exceed 800mg of EGCG daily.
Can I use it as a meal replacement?
Not on its own. It lacks the fibre, vitamins, and calories of a full meal, so pair it with fruit, oats, or a balanced snack.
When is the best time to drink it?
Any time that helps you hit your daily protein. Breakfast, after training, or as an afternoon snack all work. just not on an empty stomach.
Is it suitable for vegetarians?
Yes. It’s labelled vegetarian, but it contains milk, so it’s not vegan.
Who should avoid it?
Pregnant or breastfeeding women and anyone under 18, per the label. Check with a doctor if you take medication or have a health condition.
Final Verdict
Impact Diet Whey is a smart buy for anyone cutting fat who struggles to eat enough protein. It’s a weaker buy for people focused only on bulking.
| Buy it if you… | Skip it if you… |
|---|---|
| Are in a calorie deficit and want to keep muscle | Are bulking and want the most protein per dollar |
| Need a fast, filling breakfast or snack | Already take green tea or fat-burner supplements |
| Want low carbs and low sugar | Are pregnant, breastfeeding, or under 18 |
| Can buy it on sale | Only find it at full list price |
Your Next 3 Steps
- Work out your protein target: bodyweight in kg × 1.6.
- Plan one shake a day to fill your biggest protein gap.
- Start logging your lifts this week using the double progression method above.
Used this way, Impact Diet Whey saves you prep time and makes it easy to hit your protein target. Pair it with steady progressive overload, and you give yourself the best shot at breaking through a plateau.