slow down the process of difficult child's voice changing? I noticed that his voice was squeaking and clearly changing to a deeper, more masculine sound early last summer- before mood stabilizers were tried. But now, it's like it never started to change at all. He's on lithobid and depakote er. He's been on this combo for a year or more but has been on MS's since the middle of last summer. Other "parts" of his body appear to be going through the normal maturity processes.