

GSN Big Mass Gainer 6KG is a “mass-gainer” supplement — designed to help people increase caloric intake, support muscle mass gain and recovery, especially if they have high calorie needs, fast metabolism, or trouble eating enough.
According to seller/nutrition data: one serving is two scoops (≈ 180 g)
From the publicly available nutrition facts for GSN Big Mass Gainer:
| Per Serving (≈ 180 g / 2 scoops) | Approximate macros |
|---|---|
| Calories | ~ 675–676 kcal |
| Protein | ~ 40 g |
| Carbohydrates | ~ 127 g |
| Fat | ~ 1 g |
Some seller claims also mention GSN includes creatine (≈ 3 g/day) along with the mass-gainer formula.
Because of these macros — especially high carbs + calories — the product is clearly aimed at bulking / mass gain (not dieting or lean cutting).
GSN Big Mass Gainer 6 KG may help if you:
Have fast metabolism or “hard-gainer” body type, and find it difficult to consume enough calories through regular meals.
Are doing regular resistance training / bodybuilding, so you can channel the extra protein + calories into muscle building instead of just fat.
Need a convenient way to boost caloric intake — e.g. after a tough workout, or when you don’t have time for full meals.
Want to gain weight / size quickly and are okay with a “bulking” phase (i.e. expecting some fat gain along with muscle).
Because of the high carbohydrate + calorie content and low fat, many of the extra calories may lead to fat gain, especially if your training/diet isn’t well-managed.
It’s not a substitute for balanced diet — you’ll still need healthy protein, fats, fiber, micronutrients, and whole foods to stay healthy.
If you have sensitive digestion, a heavy shake (180 g powder + liquid) might be hard to tolerate at once.
As with all mass-gainers: “calorie surplus + training + consistency” matters more than the shake itself.