Hi, My Friend Has Asked Me To Try Herbalife Products

Hi, my friend has asked me to try herbalife products but my concern is that I am already very healthy and exercise regularly and I donated my kidney one year ago. I do not want to damage my remaining kidney but I would like to increase my muscle mass slightly and lower my body fat percentage. I am a healthy weight but am having trouble toning as I am 47. Will taking this soy based protein supplement help me or am I possibly risking damage to my kidney?