Pack size: 450 g

ShopAmino acids and proteins

Doctor Life

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Whey Protein

Premium whey protein isolate

171,99 zł

Supports muscle growth and maintenance
Protein support after training and between meals
17.5 g of complete protein per serving

Overview

Complete protein, with a clear ingredient list. Whey Protein makes it easy to increase your daily protein intake. Its foundation is Truly Grass Fed™ whey isolate, sourced from cows that graze on Ireland's green pastures for most of the year.

At the heart of the formula / Whey Protein

Thoughtful support. Clear purpose.

01Supports muscle growth and maintenance
02Protein support after training and between meals
0317.5 g of complete protein per serving
04A natural source of BCAAs, leucine, and glutamine
05Helps maintain healthy bones

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Whey Protein

Made for your daily routine.

One 20 g serving provides 17.5 g of protein and naturally occurring amino acids, including 4.4 g BCAAs, 2 g leucine, and 3.42 g glutamine. Protein contributes to muscle growth and maintenance and helps maintain healthy bones. The isolate-based formula is also low in sugar, fat, and carbohydrates.

The formula contains no artificial flavors, sweeteners, colors, or preservatives. Sunflower lecithin helps the powder mix, while the neutral taste works with water, milk, smoothies, or meals. It offers a flexible protein source for training or everyday nutrition.

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Whey Protein

Why does protein matter?

Protein provides amino acids needed to build and maintain tissues. Adequate intake supports muscle growth and maintenance and healthy bones. Whey isolate is a convenient option when meals alone do not meet your planned protein intake or you want a simple serving after exercise.

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Whey Protein

What does research say about Whey Protein?

Whey is widely studied in sports nutrition. It supplies essential amino acids, including leucine, and stimulates muscle protein synthesis, particularly after resistance exercise. Some comparisons have found a greater short-term muscle response than with slower-digesting casein. Large reviews show that additional protein can support gains in strength and lean mass during resistance training. Overall daily intake and the training program remain important.

Ingredients / Doctor Life

Every ingredient. Clearly explained.

Each ingredient, its form and quantity — in one place.

Ingredient amounts for the servings shown in the table.
Ingredient	1 serving
Energy	74 kcal / 309 kJ
Fat	0.2 g
of which saturated fatty acids from MCTs	48 mg
Monounsaturated fatty acids	52 mg
Polyunsaturated fatty acids	86 mg
Carbohydrates	0.76 g
of which sugars	0.5 g
Fiber	0 g
Protein	17.5 g
Salt	133 mg
Whey protein isolate	19.84 g

*NRV: Nutrient Reference Value

Full ingredient list

Whey protein isolate from cow's milk (99.2%), sunflower lecithin (0.8%). Allergen: milk.

How to use

Part of your daily rhythm.

How to use

Adults: take 1–4 servings daily. One serving is 20 g (1 scoop). Take after waking, between meals, after exercise, or before bed. Mix each serving with 200 mL of water or milk. On training days: take the first serving after waking, the second within 1.5 hours after training, and the third before bed. On rest days: take the first serving after waking, the second between meals, and the third before bed.

Important information

Do not use if you are hypersensitive to any ingredient. Do not exceed the recommended daily serving. This food supplement should not replace a varied diet. A balanced diet and a healthy lifestyle are recommended. Store in a dry place in closed packaging at 15–25°C, out of reach of young children. Use within 3 months of opening.

Science & sources

Understand the formula.

Studies of whey protein examine its value for meeting protein needs, stimulating muscle protein synthesis, and supporting the effects of resistance training.

These publications concern the studied ingredients or formulas. They do not all evaluate the finished Doctor Life product, and research results do not guarantee individual outcomes.

01A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults

Robert W. Morton et al.

British Journal of Sports Medicine (2018), 52(6), 376-384. DOI: 10.1136/bjsports-2017-097608; PMID: 28698222.

An analysis of 49 studies involving 1,863 participants found that protein supplementation enhanced resistance training gains in strength, lean body mass, and muscle size. The findings support protein supplements as part of a well-planned training and dietary routine.

Read publication ↗

02Ingestion of whey hydrolysate, casein, or soy protein isolate: effects on mixed muscle protein synthesis at rest and following resistance exercise in young men

Jason E. Tang et al.

Journal of Applied Physiology (2009), 107(3), 987-992. DOI: 10.1152/japplphysiol.00076.2009; PMID: 19589961.

Whey protein produced a faster rise in amino acid levels and stimulated muscle protein synthesis more than casein or soy, particularly after resistance exercise. The study highlights the practical value of rapidly absorbed whey after training.

Read publication ↗

03Myofibrillar muscle protein synthesis rates subsequent to a meal in response to increasing doses of whey protein at rest and after resistance exercise

Oliver C. Witard et al.

The American Journal of Clinical Nutrition (2014), 99(1), 86-95. DOI: 10.3945/ajcn.112.055517; PMID: 24257722.

A study of different whey isolate servings found that 20 g of protein effectively maximized muscle protein synthesis in young, trained men. It provides a useful reference for planning protein intake around training.

Read publication ↗

FAQ / Whey Protein

Good questions. Clear answers.

Talk to us ↗

How is whey isolate different from concentrate?

Isolate generally contains a higher protein percentage and less fat, sugar, and lactose than concentrate. In this product, whey isolate makes up 99.2% of the ingredient blend. One serving provides 17.5 g protein, 0.5 g sugars, and 0.2 g fat.

What does Truly Grass Fed™ certification mean?

The designation relates to milk from cows grazing on Irish pastures and fed predominantly grass. The standard also covers animal welfare and the absence of rBST and rBGH hormone use. It describes the whey’s source and production standards.

Is it only for people who go to the gym?

No. It can be used by adults who want to supplement dietary protein, including active people and those who find it difficult to prepare protein-rich meals. It does not replace a balanced diet or exercise.

When should I take it after exercise?

The directions allow a serving within 1.5 hours after exercise. Consistent protein intake throughout the day and your overall diet are more important than a narrow timing window. It may also be used in the morning, between meals, or before bed.

How do I prepare Whey Protein?

Mix 1 scoop (20 g) into 200 mL of water or milk. Its neutral flavor also works with fruit, cocoa, coffee, oatmeal, and other meals.

How long does the 450 g container last?

It provides approximately 22 full 20 g servings, with a small amount remaining. At 1 serving daily, that is about three weeks. More servings per day use the container faster; consider your total dietary protein intake.

Is it suitable for someone with a milk allergy?

No. Whey isolate comes from cow’s milk, a declared allergen. Do not use it if you are allergic to milk proteins. If you are lactose-intolerant, discuss individual tolerance with your doctor or dietitian.

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