Intravenous Dilution Guidelines top of page

Amphotericin B injection, lipid complex (Amphotec®)

Usual Diluents


Standard Dilutions   [Amount of drug] [Infusion volume] [Infusion rate]

See below

Stability / Miscellaneous

Stability data:

Drug Stability
Room Temp.
Notes P-Insert
Amphotericin B After reconstitution, the drug should be refrigerated at 2-8°C (36-46°F) and used within 24 hours. Do not freeze. After further dilution with 5% Dextrose for Injection, the infusion should be stored in a refrigerator (2-8°C) and used within 24 hours. Store unopened vials of AMPHOTEC at 15-30°C (59-86°F). Solution Partially used vials should be discarded.

Retain in carton until time of use.
02 27 06
After reconstitution, the drug should be refrigerated at 2-8°C (36-46°F) and used within 24 hours. Do not freeze. After further dilution with 5% Dextrose for Injection, the infusion should be stored in a refrigerator (2-8°C) and used within 24 hours. Partially used vials should be discarded.


AMPHOTEC® is a sterile, pyrogen-free, lyophilized powder for reconstitution and intravenous (IV) administration. AMPHOTEC consists of a 1:1 (molar ratio) complex of amphotericin B and cholesteryl sulfate. Upon reconstitution, AMPHOTEC forms a colloidal dispersion of microscopic disc-shaped particles.

The recommended dose for adults and pediatric patients is 3 - 4 mg/kg as required, once a day.

AMPHOTEC, reconstituted in Sterile Water for Injection, is administered diluted in 5% Dextrose for Injection by intravenous infusion at a rate of 1 mg/kg/hour. A test dose immediately preceding the first dose is advisable when commencing all new courses of treatment. A small amount of drug (e.g., 10 mL of the final preparation containing between 1.6 to 8.3 mg) should be infused over 15 to 30 minutes and the patient carefully observed for the next 30 minutes.

The infusion time may be shortened to a minimum of 2 hours for patients who show no evidence of intolerance or infusion-related reactions. If the patient experiences acute reactions or cannot tolerate the infusion volume, the infusion time may be extended.

Directions for reconstitution and preparation of infusion admixture
AMPHOTEC must be reconstituted by addition of Sterile Water for Injection. Using sterile syringe and a 20-gauge needle, rapidly add the following volumes to the vial to provide a liquid containing 5 mg of amphotericin B per mL. Shake gently by hand, rotating the vial until all solids have dissolved. Note that the fluid may be opalescent or clear.
50 mg/vial add 10 mL Sterile Water for Injection
100 mg/vial add 20 mL Sterile Water for Injection

For infusion, further dilute the reconstituted liquid to a final concentration of approximately 0.6 mg/mL (range 0.16 mg/mL to 0.83 mg/mL). The following table provides dilution recommendations:
Dose of
Volume of Reconstituted
Infusion Bag Size for
5% Dextrose for Injection
10 – 35 mg 2 – 7 mL 50 mL
35 – 70 mg 7 – 14 mL 100 mL
70 – 175 mg 14 – 35 mL 250 mL
175 – 350 mg 35 – 70 mL 500 mL
350 – 1000 mg 70 – 200 mL 1000 mL

Do not reconstitute the lyophilized powder with saline or dextrose solutions, or admix the reconstituted liquid with saline or electrolytes.

The use of any solution other than those recommended, or the presence of a bacteriostatic agent (e.g., benzyl alcohol) in the solution may cause precipitation of AMPHOTEC. Do not filter or use an in-line filter with AMPHOTEC.

Do not mix the infusion admixture with other drugs. If administered through an existing intravenous line, flush with 5% Dextrose for Injection prior to, and following, infusion of AMPHOTEC, otherwise administer via a separate line.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration whenever solution and container permit. Do not use if a precipitate or foreign matter is present, or if the seal is not intact. Strict aseptic technique always should be observed during reconstitution and dilution since no preservatives are present in the lyophilized drug or in the solutions used for reconstitution and dilution.

AMPHOTEC® (Amphotericin B) Cholesteryl Sulfate Complex for Injection is a sterile lyophilized powder supplied in single use glass vials. Each vial is individually packaged.
AMPHOTEC 50 mg in 20 mL vial (NDC 64116-025-01)
AMPHOTEC 100 mg in 50 mL vial (NDC 64116-021-01)

Store unopened vials of AMPHOTEC at 15-30°C (59-86°F).

AMPHOTEC should be retained in the carton until time of use.

Manufactured by:
Ben Venue Laboratories, Inc., Bedford, OH 44146, USA
The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgment. Neither GlobalRPh Inc. nor any other party involved in the preparation of this program shall be liable for any special, consequential, or exemplary damages resulting in whole or part from any user's use of or reliance upon this material.  PLEASE READ THE DISCLAIMER CAREFULLY BEFORE ACCESSING OR USING THIS SITE. BY ACCESSING OR USING THIS SITE, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS SET FORTH IN THE DISCLAIMER.
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