I currently take Diovan 320/25. My pressure is running a little high and I have the medication listed above. Will this medication help bring the pressure down and what side affects will I experience.

Is this your prescribed medication? If not don't take it please. If it is, then yes it is used to control High BP well as other reasons. There is a very small occurrence of side effects, tiredness, dizziness, diarrhea, nausea, dry mouth, Shortness of breath. A few more, but you are unlikely to experience them