In the Name of Allah, the Inspirer of Truth.
Assalamu Alaikum Warahmatullahi Wabarakatuh

One must find out the source of the gelatine before one can consume. As a rule of thumb, consider gelatine (kosher or otherwise) as Haraam unless proved otherwise. Fish gelatine is suitable as a substitute. Generally porcine or bovine based gelatine is commonly used which is Haraam.


And Allah knows Best
Wa Alaykumussalaam Wa Rahmatullahi Wa Barakatuh
http://www.foodguide.org.uk