Question 1

What is risperidone?

Accepted Answer

RISPERDAL ® contains risperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. The chemical designation is 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 2 and its molecular weight is 410.49. The structural formula is: Risperidone is a white to slightly beige powder. It is practically insoluble in water, freely soluble in methylene chloride, and soluble in methanol and 0.1 N HCl. RISPERDAL ® Tablets are for oral administration and available in 0.5 mg (red-brown), 1 mg (white), 2 mg (orange), 3 mg (yellow), and 4 mg (green) strengths. RISPERDAL tablets contain the following inactive ingredients: colloidal silicon dioxide, hypromellose, lactose, magnesium stearate, microcrystalline cellulose, propylene glycol, sodium lauryl sulfate, and starch (corn). The 0.5 mg, 2 mg, 3 mg, and 4 mg tablets also contain talc and titanium dioxide. The 0.5 mg tablets contain red iron oxide; the 2 mg tablets contain FD&C Yellow No. 6 Aluminum Lake; the 3 mg and 4 mg tablets contain D&C Yellow No. 10; the 4 mg tablets contain FD&C Blue No. 2 Aluminum Lake. RISPERDAL is also available as a 1 mg/mL oral solution. RISPERDAL ® Oral Solution contains the following inactive ingredients: tartaric acid, benzoic acid, sodium…

Question 2

What kind of drug is risperidone?

Accepted Answer

The FDA classifies risperidone as an atypical antipsychotic. Atypical antipsychotics block dopamine D2 receptors and serotonin 5-HT2A receptors in the brain, rebalancing these signaling chemicals to reduce hallucinations, delusions, and mood symptoms in conditions like schizophrenia and bipolar disorder. If you are checking whether it is safe to combine with something else, the class is what matters — two drugs from the same class usually should not be stacked.

Question 3

Can you take risperidone with other medicines?

Accepted Answer

It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run risperidone against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.

Question 4

What brand names is risperidone sold under?

Accepted Answer

We track 6 risperidone-containing products in the U.S.: Risperdal, Uzedy, Perseris Kit, Risperidone, Risvan and Rykindo. They are the same active ingredient; they differ in form, manufacturer, price and FDA recall record.

Question 5

What forms does risperidone come in?

Accepted Answer

Across the brands we track, risperidone is currently marketed as solution, tablet, injectable, kit and tablet, orally disintegrating, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.

Question 6

Is there a generic risperidone?

Accepted Answer

Yes. Our catalog lists 1 generic risperidone product alongside the brand versions. A generic has the same active ingredient and must meet the FDA's bioequivalence standard; it usually costs less. Ask your pharmacist which one your plan covers.

#	Drug	Rating	Type	Form	Generic?	Typical price
1	Risperdal Boxed warning	72/100	Prescription	Solution	Generic	$2	View →
2	Uzedy

Risperidone: uses, dosing, side effects & brands

Key facts

How risperidone is dosed

Risperidone side effects

Every risperidone product we track (6)

What risperidone pills look like

Frequently asked questions

Who shouldn’t take risperidone

Risperidone drug interactions

Imprint	Strength	Colour	Shape	Maker
RI3	1 mg	white	round	—
r	0.25 mg	yellow	round	—
r;5	0.5 mg	brown	round	—
r;1	1 mg	white	round	—
r;2	2 mg	orange	round	—
r;3	3 mg	yellow