Here you can find the products and things which are forbidden in islam i.e. Haram in islam the products may be food, ingredients, cosmetic, entertainment, clothes. The haram products are the things which are forbidden in Islamic Shariah Laws and Muslims don’t use these things in their lives.

Meat;  Which is not slaughtered according to Islamic Shariah Laws.
Pig Meat; Meat which is obtained from the Pig.
Alcohol and Drugs; All types of intoxicants are haram in islam which can lead to the state of unconsciousness.
Gelatin;  Produced from animal mainly from Pig but if the source is Cow, chicken or fish then it is halal.
Cholesterol;  Source is always animal if the animal is Halal and slaughterd according to Islamic laws then it is considered as halal.
Diglyceride; If extracted from plants then it is halal, but if the source is animal then it should be from halal animal which is slaughtered in line with Islamic guidelines.
Pepsin; It is a digestive enzyme which is extracted from pig’s stomach and is haram as the source is also haram.
Glycerol, Glycerine, Glyceryl; The source can be Plants, Animal, or Synthetic but if the source is animal the product is haram.
Rennin, Rennet;  It is a protein which is used in preparation of cheese for curdling of the milk, it is haram. 
Hormones; Animal Hormones are haram source and it is a common source, you should confirm the source.
Meat of Carnivore animals; The meat of all carnivore animals is also forbidden in Islam.
Lard; It is Fats origin from Swine which is haram in Islam for Muslims

Following emulsifier are considered as Haram 120,140, 141, 160[a], 161, 252,300,301,422, 430, 431, 433, 435, 436, 441,470,471(*Animal Base),472[a],472[b],472[c],472[d], 472[e], 473, 474, 475, 476,477, 478, 481, 482, 483, 491, 492,493, 494, 542, 570, 572, 631, 635,920.

471 with vegetable base is said as Halal by some people.

E100, E110, E120, E153, E210, E213, E214, E216, E234, E256, E270, E280. E325, E326, E327, E334, E335, E336, E337.E432, E433, E434, E440, E470, E472, E495 E904 are also haram Emulsifier.

E120 and E904 contains Insects.