What Should I Discuss With My Healthcare Provider Before Taking

What should I discuss with my healthcare provider before taking metronidazole (Flagyl)?
You should not use this medication if you are allergic to metronidazole, or if you are in the first trimester of pregnancy. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
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What are the reprecussions for a health care provider that 1. gives this medicaion to a pregnant woman knowing she is in the first trimester and 2. Fails to discuss the benefits or risks 3. The woman miscarries.