Nature's Answer Periobrite Alcohol-Free Mouthwash, Cinamint, 16 Ounce, 2 Count by Nature's Answer

What's the difference between periobrite and periowash mouthwashes?

Full ingredient list?

The directions says to rinse twice a day with 2 capfuls. Does that mean to rinse with 2 capfuls each sessions a day for a total of 4 capfuls?

Is this mouthwash vegan? It says "vegetarian" on the label. So need to know what is the animal derived ingredient they use. Thank you.