Pure Grass Whey

Whey protein is a high-quality protein source derived from the liquid by-product of cheese-making. Once considered waste, whey is now recognised as one of the most effective dietary supplements in sports nutrition, thanks to its high biological value and rich essential amino acid profile — including leucine, a key driver of muscle protein synthesis.

There are three main types of whey protein on the market. Whey concentrate contains 70–80% protein and retains some lactose and fat — it offers the best balance of quality, taste and value. Whey isolate undergoes additional filtration to reach around 90% protein with minimal lactose, making it suitable for those with lactose sensitivity. Whey hydrolysate is pre-digested for the fastest absorption, often recommended around training sessions.

Pure Grass Whey by Swilab is a premium whey protein concentrate sourced from grass-fed cows, with natural flavourings and stevia — formulated and manufactured in Switzerland. Whether you're into fitness, cycling, skiing or bodybuilding, whey remains the benchmark for boosting protein intake in a practical, effective way.

Whey protein stands out for its rapid absorption and high biological value, making it one of the most studied supplements in sports nutrition. Its primary benefit lies in stimulating muscle protein synthesis through its high leucine and BCAA (branched-chain amino acid) content — two key factors for muscle development.

A meta-analysis published in the British Journal of Sports Medicine (Morton et al., 2018) found that protein supplementation combined with resistance training significantly improves both strength and muscle mass in healthy adults. A separate systematic review (Davies et al., 2018) confirms that whey promotes muscle recovery after intense exercise.

Beyond athletic performance, whey offers additional benefits: it helps maintain muscle mass during a calorie-restricted diet, supports the immune system through immunoglobulins and lactoferrin, and provides a notable satiating effect for weight management. For men and women alike — whether in bodybuilding, fitness or endurance sports — whey is a versatile product that integrates easily into a balanced diet.

Using whey protein is straightforward and adapts to your lifestyle. The recommended dosage across most studies is 20–40 g of protein per serving — roughly one scoop of powder mixed into 200–300 ml of water, milk or plant-based drink. It also works well blended into a shake, smoothie or protein-rich snack such as pancakes or porridge.

Timing depends on your goal. For optimal muscle recovery, consume whey within 30–60 minutes of training — the anabolic window when muscle protein synthesis peaks (Li et al., 2025). As a snack between meals, whey ensures a steady protein supply throughout the day, which is essential for muscle building.

For a bulking phase, two to three servings per day may be appropriate. For weight loss, one or two servings typically suffice as a replacement for calorie-dense snacks. Choose a flavour you enjoy — Pure Grass Whey is available in Vanilla and Chocolate — to make the daily routine sustainable long-term.

Pure Grass Whey dissolves easily and delivers a smooth, creamy texture — ideal in a shaker or as an addition to your meals. Consult a healthcare professional to tailor the dosage to your individual needs.

Choosing the right whey depends on several factors: your training goal, digestive tolerance and budget. The three types — concentrate, isolate and hydrolysate — each offer distinct advantages. Whey concentrate provides the best value for money (CHF) with a good protein-to-cost ratio, though it contains more lactose. Whey isolate is better suited for lactose-sensitive individuals thanks to advanced filtration, typically exceeding 85% protein content. Hydrolysate, meanwhile, is pre-digested for ultra-fast absorption.

In sports nutrition, many international brands compete across different price and quality tiers. For Swiss consumers who value provenance and transparency, Pure Grass Whey by Swilab stands apart: it's made from grass-fed cow's milk, free from artificial flavourings and unnecessary sweeteners, with a complete amino acid profile and high biological value — formulated and manufactured in Switzerland.

To choose the best product for you, check the ingredient list, the protein percentage per serving and the absence of unnecessary additives. A high-quality product with a short ingredient list is generally a reliable indicator.

Whey protein is a strategic ally for weight loss. Its main mechanism is the thermic effect of protein: digesting protein burns more energy than digesting carbohydrates or fat, thereby increasing daily calorie expenditure. Whey also promotes satiety, reducing the urge to snack between meals. A review by Westerterp-Plantenga et al. (2012) confirms that moderately high-protein diets support weight loss while maintaining basal energy expenditure.

The other major advantage of whey during a calorie deficit is preserving muscle mass. Losing weight without losing muscle is essential for maintaining an active metabolism and avoiding the yo-yo effect. A meta-analysis (Liao et al., 2019) demonstrates that whey supplementation combined with resistance training improves body composition — promoting fat loss while preserving lean mass.

In practice, replacing a calorie-dense snack with a whey shake (approximately 118–132 kcal per serving with Pure Grass Whey) reduces overall caloric intake while keeping protein levels adequate. Whether your sport of choice is fitness, bodybuilding or endurance activities like cycling or skiing, whey fits seamlessly into a controlled eating plan.

For optimal results, pair whey intake with a balanced diet and regular exercise — and consult a healthcare professional before making any significant dietary changes.

For muscle building, whey protein is the gold-standard supplement in sports nutrition. Building muscle requires a protein intake above baseline needs: current scientific recommendations suggest an optimal range of 1.6–2.2 g of protein per kilogram of body weight per day to maximise muscle protein synthesis (Morton et al., 2018). For an 80 kg individual, that's 128–176 g of protein daily — a target that's difficult to reach through food alone.

This is where whey comes in: with roughly 23–24 g of protein per serving, two to three shakes a day efficiently bridge the gap. Whey is particularly effective for building mass thanks to its high leucine content — the amino acid that directly activates the mTOR signalling pathway, the primary mechanism of muscle protein synthesis. Consuming 20–40 g of whey around training stimulates this pathway in a dose-dependent manner (Li et al., 2025).

The Swiss Sports Nutrition Society (SSNS) highlights the importance of protein quality for athletes, noting that whey protein offers significantly higher quality for muscle synthesis compared to plant-based proteins. Pure Grass Whey, with its complete essential amino acid profile and 5.23 g of BCAAs per serving, provides a high-quality foundation for your muscle-building goals.

Beyond sports performance, whey protein offers significant benefits for overall health. Whey contains bioactive components — immunoglobulins, lactoferrin, alpha-lactalbumin — that support the immune system. These peptides stimulate innate immunity, boost macrophage activity and promote glutathione production, a powerful antioxidant that protects immune cells.

In Switzerland, the Federal Food Safety and Veterinary Office (FSVO) recommends a daily protein intake of 0.83 g per kg of body weight for adults under 65. For athletes, older adults or those in recovery, requirements are higher. The Swiss Sports Nutrition Society (SSNS) emphasises the importance of protein quality for athletes, and whey serves as a practical supplement to help meet these recommendations within a balanced diet.

Whey also shows positive effects on inflammatory markers: a meta-analysis (Prokopidis et al., 2023) found a significant reduction in interleukin-6 (IL-6) among subjects supplemented with whey. Additional studies indicate beneficial effects on insulin resistance and glycaemic control in overweight individuals.

For adults of all ages, men and women alike, whey is a safe product when consumed as part of a balanced diet. If you have any specific medical conditions, consult a healthcare professional before starting supplementation.