Tooth extraction on thursday preceded by clindamycin 600 mg for premed before procedure. regularly take miralax (polyethylene glycol) for constipation. black loose stools ?

Medication use : Taking some medications can cause GI changes. Contact your prescribing doctor if the problem continues.

Evaluation: Black stools indicate bleeding somewhere along GI tract. Single dose of antibiotic and the small amount of bleeding from a single tooth extraction is probably not the cause. Run your symptoms by your primary care practitioner. Further studies may be indicated.