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UZEDY Injection Volumes by Dose
UZEDY (risperidone) extended-release injectable suspension comes in pre-filled syringes with volumes that vary by strength and dose. The total injection volume depends on the dose administered (25 mg to 100 mg), as higher doses use larger syringes or full volumes of higher-strength formulations.[1]
| Dose (mg) | Strength (mg/mL) | Syringe Size (mL) | Injection Volume (mL) |
|-----------|------------------|-------------------|-----------------------|
| 50 | 100 mg/mL | 0.5 mL | 0.5 |
| 75 | 100 mg/mL | 0.75 mL | 0.75 |
| 100 | 100 mg/mL | 1 mL | 1 |
| 50 | 75 mg/mL | 1 mL | ~0.67 (partial fill) |
| 25 | 50 mg/mL | 0.5 mL | 0.5 |
Doses are given subcutaneously every 1 or 2 months. Providers select the syringe based on patient needs, with partial fills for some lower doses using larger syringes.[1]
How Dosing Starts and Adjusts
Initial dose is typically 50 mg every 2 months or 100 mg every month, titrated based on response. Volumes stay fixed per syringe; no custom drawing required.[1]
Needle Sizes and Administration Tips
Uses 20- or 22-gauge, 2-inch needles for deltoid or 1-inch for abdomen. Shake vigorously for 30 seconds before injecting to resuspend.[1]
Storage and Handling
Refrigerate at 2-8°C; allow to reach room temperature (up to 1 hour) before use. Do not pool leftover volumes across syringes.[1]
[1]: UZEDY Prescribing Information (Teva Pharmaceuticals)