1. If you are sure the foodstuff has been extracted from those animals that are ceremonially unclean or those which haven’t been slaughtered canonically but a lot of changes have been made on that foodstuff to become like stearin pill it would be considered as halal and tahir and have the same ruling as the Istihala, otherwise, eating such that foodstuff is haram unless you have no choice but to eat (take) it. Since it has apparently been transformed (Istihala) it is treated as clean.
2. If you are not sure from what thing the foodstuff has been extracted it is treated as halal and there is no need to be examined.
Appendix:
The grand maraja' answer regarding the above-mentioned question is as follows:[1]
The office of Grand Ayatollah Khamenei (May Allah grant him long life):
1. If these pills have two kinds of halal and haram divisions and you don’t know which one of the both you are taking it is treated as halal.
2. There is no problem.
The office of Grand Ayatollah Sistani (May Allah grant him long life):
1. If you are dubious about from grass or animal the gelatin has been extracted there would be no problem to eat (take) it and no need to be examined. Otherwise, if you know it is extracted from animal and not sure the animal has been slaughtered canonically you are not allowed to eat it even it has been provided by animal's bones according to the obligatory precaution.
However, if you are sure that its material has been transmuted by the chemical operation there is absolutely no problem to take it, but the Istihala hasn’t approved yet.
2. It is clean (Pak).
The office of Grand Ayatollah Makarem Shirazi (May Allah grant him long life):
1. If you are dubious about from grass or animal the gelatin has been extracted it is treated as clean and there is no need to be examined.
2. If you are sure the foodstuff has been extracted from those animals that are ceremonially unclean or those which haven’t been slaughtered canonically but a lot of changes have been made on that foodstuff to become like stearin pill it would be considered as halal and tahir and have the same ruling as the Istihala, otherwise, eating such that foodstuff is haram unless you have no choice but to eat it.
The office of Grand Ayatollah Makarem Shirazi (May Allah grant him long life):
1. If you are sure the pill contains the gelatin it is impermissible to take it unless there is no choice but to take it.
2. Given the supposition made in the questions, the above-mentioned material treated as clean.
The office of Grand Ayatollah Makarem Shirazi (May Allah grant him long life):
1. There is no problem to take it.
2. Using such that cream is permissible if you are dubious about it.
An answer given by Ayatollah Mahdi Hadavi Tehrani (may Allah grant him long life) is as under:
1. Since it has undergone transformation (Istihala) in regards to the above-mentioned question it is treated as clean.
2. It is clean until you make sure there is a Najas material which hasn’t undergone any transformation. Link to Istiftaat Website

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