In an interview Newspaper.ru general practitioner and expert in anti-aging drugs Yana Ermurake told who should not take collagen supplements – those who suffer from liver or kidney failure.
For people who cannot consume normal amounts of protein, such as those with liver failure or kidney disease, collagen may not be safe.
The doctor recommended taking collagen supplements with caution if there is an allergy.
Typically, an allergy to collagen supplements develops not because of the product itself, but in response to one of its raw ingredients or a specific protein — for example, an allergy to fish.
The article states that collagen supplements are beneficial for anyone over the age of 25.
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