Generally no, as most products containing Glycerol originate as a by-product of soaps and body lotions, which the majority of contain animal fats. However, Glycerol in itself comes from plants, so this may alter the answer to your question depending on what the Glycerol is mixed with.
The answer to this depends on the vegetarian in question. Some vegetarians only exclude meat from their diets, and still eat things that contain animal-derived enzymes or rennet, which are products of animal slaughter. Other vegetarians are more strict and exclude everything which is a product of animal slaughter. Another question is what is the source of the glycerol? Not all glycerol is animal-derived. If it's not animal-derived, there's no problem. Whether products with glycerol are acceptable is a choice each vegetarian makes. There's no rule set in stone for whether or not glycerol is allowed.
Pollio Ricotta cheese is suitable for vegetarians.
Glycerol/Glycerin (E422) is found in toothpaste, shampoo and soap. It is sometimes vegetarian, but not all the time. Make sure you check first though.
there not suitable for vegetarians
Water chestnuts come from a plant. Therefore, they are suitable for vegetarians.
Nestle Blue Riband biscuits are suitable for vegetarians.
No. Vegetarians do not eat any shellfish.
Yes for vegetarians; no for vegans.
NO!
No
no....not suitable
Yes