I was wondering if you could help me identify an unknown pill type I have recently found in a bottle of Advil at my home? It is a solid white cylindrical pill without tapered edges and has the letters, or letter and number K 0 on one side. The K is modified with an arrow head or carrot at the tip of the slanted arm. Attached is a crude drawing of this. The opposite side is simply scored. There are no pharmaceutical markings on it at all or other identifiers. If you could help me with this puzzle or direct me to someone who could it would be greatly appreciated.