the results indicate ( 1 ) that the use of amoxycillin instead of ampicillin in pregnancies that require estrogen monitoring of feto-placental function , has little clinical advantage , and ( 2 ) that the adverse effect of therapeutic doses of ampicillin ( and amoxycillin ) on estrogen levels during pregnancy may be less important than is commonly assumed .
C0014939
estrogen
C0032961
pregnancy