Veklury® (remdesivir)
Compatibility with Alternative Diluents
Gilead Sciences, Inc. is providing this document to you, a US Healthcare Professional, in response to your unsolicited request for medical information.
Gilead Sciences, Inc. is providing this document to you, a US Healthcare Professional, in response to your unsolicited request for medical information.
Veklury® (remdesivir)
Compatibility with Alternative Diluents
Some data may be outside of the US FDA-approved Prescribing Information. In providing this data, Gilead Sciences, Inc. is not making any representation as to its clinical relevance or to the use of any Gilead product(s). For information about the approved conditions of use of any Gilead drug product, please consult the FDA approved prescribing information.
The full indication, important safety information, and boxed warnings are available at: www.gilead.com/-/media/files/pdfs/medicines/covid-19/veklury/veklury_pi
Reconstitution with Alternative Diluents
Only use SWFI to reconstitute RDV for Injection, 100 mg (lyophilized powder).1 Please refer to your local label for full dose preparation instructions.
- Reconstitution with D5W and NS resulted in hypertonic drug solutions with higher osmolality compared to reconstitution with SWFI (Table 1).2
- Use SWFI for reconstitution to minimize osmolality of the drug product solution before it is further diluted.2
Table 1. Osmolality of the Reconstituted Solution2
Formulation | RDV Dose | Reconstitution Diluent | Osmolalitya |
Veklury for Injection, 100mg (lyophilized powder) | 100 mg | 19 mL SWFI | 483 mOsm/kg |
19 mL NS | 780 mOsm/kg | ||
19 mL D5W | 819 mOsm/kg |
aAverage ± standard deviation of osmolality from 3 measurements using freezing point osmometer.
Reconstitution When SWFI is Unavailable
RDV for Injection, 100 mg is recommended to be reconstituted with SWFI prior to further dilution into NS.1
If the preferred reconstitution diluent SWFI is unavailable for reconstitution, NS may be used to reconstitute RDV.2
- If NS is used to reconstitute RDV, then the subsequent dilution should only be done using 250 mL of NS.2
- The dilution volume is recommended to be 250 mL because dilution of the
200 mg loading dose into 100 mL of NS results in osmolality greater than 400 mOsm/kg which may affect tolerability (Table 2).2
Table 2. Osmolality of the Final Solution2
Formulation | Reconstitution Diluent | Dilution Diluent | RDV Dose | Final Infusion Volumea,b | Osmolality |
Veklury for Injection, 100mg (lyophilized powder) | SWFI | NS | 100 mg | 100 mL | 317.5 mOsm/kg |
250 mL | 299.0 mOsm/kg | ||||
200mg | 100 mL | 351.7 mOsm/kg | |||
250 mL | 314.2 mOsm/kg | ||||
NS | NS | 100 mg | 100 mL | 378.0 mOsm/kg | |
250 mL | 327.3 mOsm/kg | ||||
200mg | 100 mL | 468.3 mOsm/kg | |||
250 mL | 361.0 mOsm/kg |
aThe final diluted volume is per the recommended preparation instructions for adults.
bThe proportionate amount of infusion fluid was removed from the IV bag prior to addition of dose volume to maintain the overall solution volume of 100 mL or 250 mL.
Dilution with Alternative Diluents
Dilute the reconstituted RDV solution using NS1 or D5W.2 Please refer to your local label for full dose preparation instructions.
- Based on an internal Gilead study, RDV may be diluted with D5W.2
- The type of infusion fluid (NS or D5W) did not have an impact on osmolality for the same dilution ratios (Table 3).2
Table 3. Osmolality of the Final Solution2
Formulation | RDV Dose | Reconstitution Diluent | Dilution Diluent | Final Infusion Volumea,b | Osmolalityc |
Veklury for Injection, 100mg (lyophilized powder) | 100 mg | 19 mL SWFI | NS | 100 mL | 318 mOsm/kg |
D5W | 100 mL | 310 mOsm/kg | |||
NS | 250 mL | 299 mOsm/kg | |||
D5W | 250 mL | 299 mOsm/kg | |||
200 mg | 19 mL SWFI | NS | 100 mL | 352 mOsm/kg | |
D5W | 100 mL | 354 mOsm/kg | |||
NS | 250 mL | 314 mOsm/kg | |||
D5W | 250 mL | 301 mOsm/kg |
aThe final diluted volume is per the recommended preparation instructions for adults.
bThe proportionate amount of infusion fluid was removed from the IV bag prior to addition of dose volume to maintain the overall solution volume of 100 mL or 250 mL.
cOverall average of osmolality from measurements using freezing point osmometer.
There are no data on the compatibility of RDV with Lactated Ringer’s solution for dilution.
Infusion with Other IV Solutions or Medications
The diluted solution should not be administered simultaneously with any other medication in the same IV line. The compatibility of RDV with IV solutions and medications other than NS is not known.1
References
- Enclosed. Gilead Sciences Inc. Veklury® (remdesivir) for injection, for intravenous use. VEKLURY® (remdesivir) injection, for intravenous use. U.S. Prescribing Information. Foster City, CA.
- Gilead Sciences Inc. Data on File.
Abbreviations
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D5W=dextrose 5% in water
NS=0.9% normal saline
RDV=remdesivir
SWFI=sterile water for injection
Product Label
For the full indication, important safety information, and boxed warning(s), please refer to the Veklury US Prescribing Information available at:
www.gilead.com/-/media/files/pdfs/medicines/covid-19/veklury/veklury_pi
Follow Up
For any additional questions, please contact Gilead Medical Information at:
☎1‐866‐MEDI‐GSI (1‐866‐633‐4474) or www.askgileadmedical.com
Adverse Event Reporting
Please report all adverse events to:
Gilead Global Patient Safety ☎ 1-800-445-3235, option 3 or
www.gilead.com/utility/contact/report-an-adverse-event
FDA MedWatch Program by ☎ 1-800-FDA-1088 or MedWatch, FDA, 5600 Fishers Ln, Rockville, MD 20852 or www.accessdata.fda.gov/scripts/medwatch
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