SUS-PHRINE SULFITE FREE vs TWINJECT

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 16, 2026·How we rate

Attribute	SUS-PHRINE SULFITE FREE	TWINJECT
Rating	70/100	70/100
Pharmacy pays	~$3898.29 /30	~$3898.29 /30
Type	RX	RX
Active ingredient	EPINEPHRINE	EPINEPHRINE
Manufacturer	Forest Labs	Impax
Dosage forms	Injectable	Injectable
Drug class	Catecholamine	Catecholamine
Boxed warning	None	None
Treats	Airway Obstruction, Anaphylaxis, Bradycardia	Airway Obstruction, Anaphylaxis, Bradycardia

sus-phrine sulfite free twinject

Rating

70/100

Pharmacy pays

~$3898.29 /30

Type

Active ingredient

EPINEPHRINE

Manufacturer

Forest Labs

Impax

Dosage forms

Injectable

Drug class

Catecholamine

Boxed warning

None

Treats

Airway Obstruction, Anaphylaxis, Bradycardia

Frequently asked questions

Which is better-rated, Sus-Phrine Sulfite Free or Twinject?

Sus-Phrine Sulfite Free and Twinject are tied at 3.5 out of 5 by our independent rating.

Which is cheaper, Sus-Phrine Sulfite Free or Twinject?

Pharmacies pay about the same to acquire either one — roughly $3898.29 for a 30-count supply, per the CMS NADAC survey. That is not what you will be charged: your price is set by your insurer and the pharmacy, not by what the drug cost them.

What is the difference between Sus-Phrine Sulfite Free and Twinject?

Both Sus-Phrine Sulfite Free and Twinject share the active ingredient Epinephrine.

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.