My question is regarding my mother having an abscess tooth. I had taken her to the dentist on 5/5, she had s script for clindamycin HCL 150 mgs called in. She has been taken this very 6-8 hrs as instructed. The infection has not changed. My mother is 87 years young and I oversee her medication to make sure she is taking it correctly. She has a very sensitive stomach so what should I do?