What Are The Side Effects Of Prozac?

Ive been on Prozac for four/five weeks - the colour of my urine has gone quite dark (cant detect blood) I think it has been this way from the start of taking them. I have never taken very much water in a day but always drink tea without milk - so I think Im taking in enough liquids. Is there any link to this type of persciption drug and the urine colour please ?

Phil