Whey protein powder
Whey is protein from milk, separated from fat and milk sugar and dried into powder. It is a food, not a sports agent. The authorised claims concern protein as a whole rather than whey in particular, and they apply equally to quark, chicken or lentils. Powder mainly delivers convenience.
What whey actually is
Milk contains two kinds of protein: casein and whey protein. Making cheese leaves the whey behind, and filtering and drying it produces the powder the trade calls whey. What you buy is therefore concentrated milk protein — an ordinary food, not a separate class of substance. Our food database deliberately excludes the branded powders appearing in coaching schedules from public pages, because branded compositions change without notice and the value on the packaging then no longer matches what our table holds. Casein curdles into a gel in the stomach while whey protein stays liquid; that difference in digestion speed is the only structural distinction between the two milk protein fractions, and it is smaller than the trade suggests.
What may be said about protein
Regulation (EU) No 432/2012 carries, among others: "proteins contribute to a growth in muscle mass", "proteins contribute to the maintenance of muscle mass" and "proteins contribute to the maintenance of normal bones". Importantly, those claims concern protein, not whey. They may only be used on a product that qualifies as at least a source of protein under labelling rules. Quark, chicken breast, lentils and whey therefore fall under exactly the same permitted sentences — there is no separate, stronger claim for powder. For comparison from our own table: low-fat quark supplies 9.8 grams of protein per 100 grams at 52 kcal, raw chicken breast 22.5 grams at 120 kcal and raw turkey breast 23.66 grams at 114 kcal.
What the source data says about dosing: nothing
We publish no dose for protein powder, and that is a deliberate choice with two reasons. First, our own supplement source carries not one verified value: every row in that file sits at the status CHECK LABEL. Second, the amount of protein that suits you depends on body weight, training load and goal, and that is a personal calculation made inside a programme rather than on a public page. What can be said generally: powder is an addition to your total protein intake, not a category of its own. What does belong on this page is the proportion: powder counts in the same sum as your breakfast, your lunch and your evening meal, not in a separate column beside it.
Timing: distribution counts, the window does not
The idea of a narrow anabolic window straight after training persists stubbornly, but the conversation has shifted in recent years towards distribution across the day. Four moments with a decent protein source do more in practice than one large shake at the right hour. For the entrepreneurs and professionals we coach that is also exactly where the gain sits: the problem is rarely the post-training shake, but the lunch that disappears between two meetings. In practice that means: first look at where in the day a protein source is missing, and only then decide whether that gap gets filled with food or with powder. In that order the answer is often food.
When you do not need this
If you reach your protein target with quark, eggs, chicken, fish, pulses and cheese, powder adds nothing substantive — you are buying convenience, and convenience is fine as long as you know that is what you are buying. We sell no powders, run no affiliate links and name no brands. With a cow's milk allergy or lactose intolerance this is not an automatic choice anyway, and the question belongs with a dietitian or GP. Our first intervention in a programme is never a tub, but a third protein moment that structurally fits the day. The same holds for whey, casein or a plant blend: once the protein target is met, that is mainly taste, price and tolerance.
Frequently asked questions
What exactly is whey?
Whey protein from milk, separated from fat and milk sugar and dried into powder. It is concentrated milk protein and therefore an ordinary food.
Is protein powder better than protein from food?
The authorised claims in Regulation (EU) No 432/2012 concern protein as a whole and apply equally to quark, chicken or lentils. No separate, stronger claim exists for powder.
How much protein powder should you take?
We publish no dose. The amount of protein that suits you depends on weight, training load and goal; that is a personal calculation, not a general figure.
Do you need a shake straight after training?
Distributing protein across the day does more in practice than the precise hour. Four moments with a decent source is a more useful starting point than one window.
Sources
- Regulation (EU) No 432/2012 (accessed 26 August 2026)
Please note: This is general information about nutrition, not medical advice. If you have symptoms or suspect a deficiency, discuss it with your doctor. We do not sell supplements and have no commercial interest in any brand.
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Written by Dennis, founder of Dcraft Of Fitness.