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ONSOLIS vs ULTRAM

Independent side-by-side comparison.

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

Possible drug interaction. ONSOLIS and ULTRAM 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

New
70/100

Pharmacy pays

$9.51 /mL
~$0.72 /30

Type

RX
RX

Active ingredient

FENTANYL CITRATE
TRAMADOL HYDROCHLORIDE

Dosage forms

Film
Tablet

Drug class

Opioid Agonist
Opioid Agonist

Boxed warning

None
None

Half-life

about 6 hours (mean terminal elimination half-life of tramadol in healthy adults)

Treats

Pain
Pain

Frequently asked questions

What is the difference between Onsolis and Ultram?

Onsolis contains Fentanyl Citrate, while Ultram contains Tramadol Hydrochloride — 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.