PREGNANCY: Griseofulvin is known to cause birth defects and should be avoided during pregnancy. Women of child bearing potential must use appropriate forms of contraception (birth control) during treatment and for one month after completing griseofulvin therapy. Men are advised to wait six months after completing griseofulvin therapy before attempting to father a child.
NURSING MOTHERS: It is not known whether griseofulvin is excreted into human milk. Due to the lack of conclusive safety data, the manufacturer recommends against the use of griseofulvin in nursing mothers.
REFERENCE: FDA Prescribing Information
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