

What is Big Man Zero Iso Whey 30S?
Big Man Zero Iso Whey is a whey-protein isolate powder (i.e. “isolate whey”) — meaning it uses filtered whey protein, with minimal carbs/fat/lactose, aiming for high protein purity.
The “30S” refers to roughly 30 servings per tub, with net weight around 910 g (≈ 1 kg) for that version.
It’s marketed especially for people who want a “clean” protein source — good for lean muscle maintenance/growth, recovery after workouts, or low-carb / macro-controlled diets.
Based on the publicly available supplement facts for Zero Iso:
| Per 30 g serving | Approximate values |
|---|---|
| Protein | ~ 25.5 g |
| Calories | ~ 103 kcal (some sources ~102.9 kcal) |
| Fat | 0 g (or very low depending on flavor/processing) |
| Carbohydrates / Sugars | 0 g reported in one source (i.e. minimal) |
| Digestive enzymes / Additives | Contains a digestive-enzyme complex (per some listings) for better absorption. |
Because it's whey isolate and claims near-zero carbs/fat/lactose, it's positioned as a “clean protein + easy digestion” option.
This product suits you if:
You want a lean, high-purity protein source — ideal for cutting, clean bulking, or maintaining muscle without excess calories or carbs.
You need fast-absorbing protein after workouts or between meals — when whole-food protein might not be enough.
You're watching macros or dieting (e.g. low carb / low fat) — the minimal carbs/fats make it easier to stay on track.
You want a smaller pack (≈ 1 kg / 30 servings) — convenient if you're trying out a protein powder first, or don't want a large tub.
As with any supplement: treat it as a supplement, not a meal replacement — make sure your diet + real food intake + training + rest are good.
Check packaging & authenticity — when buying online (especially in markets with many supplement brands), ensure the tub is sealed and from a trusted seller.
Mixing instructions matter: usually 1 scoop (~30 g) with ~250–300 ml water or skim milk — don’t over-scoop, or macros/calories may change. Even though it's “isolate,” whey is still dairy-derived — if you're lactose-sensitive, monitor tolerance.