MEGESTROL ACETATE vs PLAN B ONE-STEP

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 22, 2026·How we rate

Attribute	MEGESTROL ACETATE	PLAN B ONE-STEP
Rating	70/100	New
Pharmacy pays	~$7.14 /30	~$192.31 /30
Type	RX	OTC
Active ingredient	MEGESTROL ACETATE	LEVONORGESTREL
Manufacturer	Novitium Pharma	Fdn Consumer
Dosage forms	Tablet, Suspension	Tablet
Drug class	Progestin	Progestin
Boxed warning	None	None
Half-life	—	about 36 hours (36 ± 13 hours at steady state)
Treats	Anorexia, Breast Neoplasms, Cachexia	—

megestrol acetate plan b one-step

Rating

70/100

New

Pharmacy pays

~$7.14 /30

~$192.31 /30

Type

OTC

Active ingredient

MEGESTROL ACETATE

LEVONORGESTREL

Manufacturer

Novitium Pharma

Fdn Consumer

Dosage forms

Tablet, Suspension

Tablet

Drug class

Progestin

Boxed warning

None

Half-life

—

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

Treats

Anorexia, Breast Neoplasms, Cachexia

—

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Frequently asked questions

Which is cheaper, Megestrol Acetate or Plan B One-Step?

Megestrol Acetate costs pharmacies less to acquire — about $7.14 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 Megestrol Acetate and Plan B One-Step?

Megestrol Acetate contains Megestrol Acetate, while Plan B One-Step 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.