NATPARA vs RAYALDEE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Possible drug interaction. NATPARA and RAYALDEE 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.

Attribute	NATPARA	RAYALDEE
Rating	New	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	PARATHYROID HORMONE	CALCIFEDIOL
Manufacturer	Nps Pharms Inc	Eirgen
Dosage forms	Injectable	Capsule, extended release
Drug class	—	Vitamin D3 Analog
Boxed warning	None	None
Treats	Hypocalcemia, Hypoparathyroidism	Hypocalcemia, Hypoparathyroidism, Osteoporosis

natpara rayaldee

Rating

New

Pharmacy pays

—

Type

Active ingredient

PARATHYROID HORMONE

CALCIFEDIOL

Manufacturer

Nps Pharms Inc

Eirgen

Dosage forms

Injectable

Capsule, extended release

Drug class

—

Vitamin D3 Analog

Boxed warning

None

Treats

Hypocalcemia, Hypoparathyroidism

Hypocalcemia, Hypoparathyroidism, Osteoporosis

Frequently asked questions

What is the difference between Natpara and Rayaldee?

Natpara contains Parathyroid Hormone, while Rayaldee contains Calcifediol — 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.