Alza tablet (ritilan)

[Wyborowa]

My friend gave swim two alza tablets, also known as ritilan. Siwm got a few alza tablets earlier in the week, they were the 54mg, sustained release. (the cylindricall tube that squeases the medicine out slowly) Today, he got 2 alza tablets, with no marking, but instead, the cylinder type pill was a kinda of slime green on half, the other half, a peach/offwhite color. Does anyone kno the dosage on this pill?

Also, if i split the pill in half, would the pill immediatly be realeased into my blood, rather than slowly creeping out? And can you inject this form of ritilan? Thanks a bunch! SWIM need help!