Collagen

Collagen is the main structural protein in the extracellular space in the various connective tissues in the body. As the main component of connective tissue, it is the most abundant protein in mammals, making 25% to 35% of the whole-body protein content. Collagen consists of amino acids wound together to form triple-helices of elongated fibrils.

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Zaid Alsalami, Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from... Answered 10 months ago

Bismihi ta'āla

If you have assurance that they are genuine and telling the truth, it would be permissible to use, even if they lack certification. 

And Allah knows best

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Hasnain Kassamali, Shaykh Hasanyn Kassamali is the founder and religious director of the Academy for Learning Islam. He has a B.A. in Sociology from the University of Alberta and a Masters in Islamic Studies from the... Answer imported 6 years ago

An animal product is impure (najis) if both of the following are present:

  1. At the time of slaughtering the animal, its blood comes out with gush, and
  2. Such animal (as mentioned above) is not slaughtered according to method prescribed by Islam, nor is there a probability that it may have been slaughtered thus.

Now if these conditions apply to Collagen then it is najis, otherwise it is pure (paak).

Reference: See Tawdheehul Masaa'il of both Ayatullah al-Khu'i (may God have mercy on his ruh) and and al-Seestani in the chapter of Najasat under the discussion of "Dead Body".