Top 10 Mass Gainers
Our editors analyse the UK's leading mass gainer supplements, evaluating formulation, nutrition, suitability and value. This guide explains the strengths and limitations of each product to help you choose the best match for your goals.
Editor’s quick picks
- Top pick:Optimum Nutrition Gold Standard 100% Whey
- Best value:Dymatize ISO100 Hydrolyzed
- Best for flavour range:PhD Diet Whey Lean Protein
Gold Standard 100% Whey
ISO100 Hydrolyzed
Diet Whey Lean Protein
Serious Gainz
Serious Mass
Serious Protein
Platinum Hydro Whey
Instant Mass Heavyweight
Muscle Fuel Anabolic
Total Mass
Side-by-side comparison
| 🥇 Optimum Nutrition Gold Standard 100% Whey Double Rich Chocolate | 🥈 Dymatize ISO100 Hydrolyzed | 🥉 PhD Diet Whey Lean Protein Belgian Chocolate | |
|---|---|---|---|
| Protein (g) | 24 g | 25 g | 17 g |
| Calories | 120 kcal | 110 kcal | 91 kcal |
| Type | Isolate & Concentrate Blend | Hydrolysed Whey Isolate | Whey Blend with Milk Proteins |
| Texture | Milkshake‑like & smooth | Light & clear | Creamy & smooth |
| Sweetener | Acesulfame K & Sucralose | Sucralose & Stevia | Sucralose |
| Sugar Level | Low | Low | Low |
| Carbs Level | Low | Low | Low |
| Fat Level | Low | Low | Low |
| Fibre Level | Low | Low | Low |
| Servings | 29 | 70 | 40 |
| Extras | Isolate & concentrate with peptides; 5.5 g BCAAs & 4 g glutamine | Hydrolysed isolate with 5.7 g BCAAs & leucine; fast absorption | L‑carnitine, green tea, CLA & flaxseed |
| Value for money | 4.0/5 | Best Value 4.5/5 | 3.5/5 |
| Overall | Excellent | Excellent | Very Good |
| Best for | Lean Muscle | Fast Absorption | Weight Loss |
| 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
What makes a good mass gainer?
A good mass gainer typically has a high calorie content and a balance of protein and carbohydrates. Check labels for serving size and ingredients.
Will it make me fat?
Mass gainers are calorie‑dense. Consider your overall calorie needs and goals when adding them to your diet.
When should I drink it?
People incorporate mass gainer shakes at different times, such as post‑workout or between meals, based on their routines. Follow the serving suggestions on the label.
Do I need a blender?
Some mixes are very thick — a blender is helpful, but many shake up fine with water or milk.
Not trying to bulk? Explore lean whey picks for tone and performance.
See Lean Whey Picks →