Using Clindamycin phosphate lotion 1%? Reviews?

I was prescribed Clindamycin phosphate lotion by my cosmetic dermatologist. Will it harm me in any way? I heard it will cause severe diarrhea, colitis, severe abdominal cramps or worse...death. I'm afraid of the effects - minor or major. I haven't taken it yet. What are your reviews on this acne medication?