Advil Gel Warning:
According to the Advil web site:
Advil Caplets, Tablets, Gel Caplets, and Extra Strength Caplets contain stearic acid (bovine origin); Advil Liqui-Gels and Extra Strength Liqui-Gels contain gelatin (bovine origin).
This makes the product not kosher. Bovine is cattle, cow, buffalo etc.
Beef products are kosher.