QUETIAPINE FUMARATE vs RISPERDAL

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 20, 2026·How we rate

Possible drug interaction. QUETIAPINE FUMARATE and RISPERDAL 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	QUETIAPINE FUMARATE	RISPERDAL
Rating	New	70/100
Pharmacy pays	~$2.62 /30	~$2.07 /30
Type	RX	RX
Active ingredient	QUETIAPINE FUMARATE	RISPERIDONE
Manufacturer	Platinum	Janssen Pharms
Dosage forms	Tablet, extended release, Tablet	Solution, Tablet
Drug class	Atypical Antipsychotic	Atypical Antipsychotic
Boxed warning	None	Boxed warning
Half-life	about 6 hours	about 3 hours in extensive CYP2D6 metabolizers (about 20 hours in poor metabolizers)
Treats	Autistic Disorder, Bipolar Disorder, Major Depressive Disorder	Autistic Disorder, Bipolar Disorder, Dementia

quetiapine fumarate risperdal

Rating

New

70/100

Pharmacy pays

~$2.62 /30

~$2.07 /30

Type

Active ingredient

QUETIAPINE FUMARATE

RISPERIDONE

Manufacturer

Platinum

Janssen Pharms

Dosage forms

Tablet, extended release, Tablet

Solution, Tablet

Drug class

Atypical Antipsychotic

Boxed warning

None

Boxed warning

Half-life

about 6 hours

about 3 hours in extensive CYP2D6 metabolizers (about 20 hours in poor metabolizers)

Treats

Autistic Disorder, Bipolar Disorder, Major Depressive Disorder

Autistic Disorder, Bipolar Disorder, Dementia

Frequently asked questions

Which is cheaper, Quetiapine Fumarate or Risperdal?

Risperdal costs pharmacies less to acquire — about $2.07 vs $2.62 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 Quetiapine Fumarate and Risperdal?

Quetiapine Fumarate contains Quetiapine Fumarate, while Risperdal contains Risperidone — 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.