但去google medical websites 後,
有部份醫生踢爆:
只是一批醫生同藥廠誇大作用去賺錢,
根本身體吸收唔倒幾多. 他們( 2 doctors) 在 video 上說只是placebo effect( placebo effect can be up to 30%),
but Collagen is not scientifically proven to be effective by ingestion ( only 7% of people " felt better" according to medical research).