Hey @Ruka!
Thanks for your question about the level of protein in Queal.
It is indeed relatively high.
However, it is not so high as to cause problems.
The European Food Safety Authority (EFSA) says intakes of at least up to 240gram for a 75kg adult are absolutely fine. The only reason this Tolerable Upper Intake Level as it is known, isn't set even higher, is because there isn't enough research into such high protein intake diets.
The question remains though, why did we put more protein than necessary in Queal?
Quite simply: We needed to up the amount of calories, and increasing the fat or carbs would've been more likely to cause unhealthy issues, or negatively impact the taste or texture of Queal. Whereas increasing the protein doesn't create such problems. Protein is super expensive right now, so believe you me, we would've lowered the protein quantity if it didn't compromise the healthiness or tastiness of the shake.
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To answer your specific question:
As long as you stick to at most one full bag (three 700kcal meals) of Queal per day, there is nothing to worry about.