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MICRONOR vs PLAN B

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. MICRONOR and PLAN B are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Rating

70/100
New

Pharmacy pays

~$2.83 /30
~$192.31 /30

Type

RX
RX

Active ingredient

NORETHINDRONE
LEVONORGESTREL

Dosage forms

Tablet
Tablet

Drug class

Progestin
Progestin

Boxed warning

None
None

Half-life

about 8 hours
about 36 hours (36 ± 13 hours at steady state)

Treats

Acne Vulgaris, Endometrial Hyperplasia, Endometriosis

Get micronorhigher-rated option

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Licensed online providers — consult & get prescribed if eligible.

Frequently asked questions

Which is cheaper, Micronor or Plan B?

Micronor costs pharmacies less to acquire — about $2.83 vs $192.31 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Micronor and Plan B?

Micronor contains Norethindrone, while Plan B contains Levonorgestrel — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.