Should I worry about allergies with Plan B One-Step?

Donna Hill Howes, RN
Donna Hill Howes, RN
Family Practitioner
Plan B One-Step contains only one medication, a hormone called levonorgestrel. This hormone is a type of progesterone. Women who have a known allergy or sensitivity to this medication should not take Plan B One-Step.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.