Only for intravenous infusion!
Before the first use of Ambiz® to determine potential hypersensitivity to the drug and before continuing to administer its full dose, the patient is recommended to enter a minimum of recommended therapeutic doses of the drug. This test dose (1 mg / kg body weight) should be administered slowly over 10 minutes, followed by monitoring the patient for 30 minutes.
The drug Ambiz® should be administered intravenously drip for 30-60 minutes.For doses above 5 mg / kg / day, the duration of intravenous infusion should be more than 2 hours (see section "Special instructions"). The recommended concentration for intravenous infusion is 0.20 mg / ml to 2.00 mg / ml amphotericin B in the form of Ambiz.
Doses
Adult patients
Doses of Ambiz® are selected individually depending on the specific characteristics of each patient.
- For systemic fungal infections caused by sensitive types of pathogens such as cryptococcosis, North American blastomycosis, disseminated candidiasis, coccidioidomycosis, aspergillosis, histoplasmosis, mucomycosis, and in some cases American leishmaniasis of the skin and mucous membranes, treatment usually starts at a daily dose of 1, 0 mg / kg body weight, which, if necessary, gradually increase to 3.0 mg / kg. The standard maintenance dose of Ambiz® is 1.0-3.0 g for 3-4 weeks.
- Empirical therapy in patients with a presumed fungal infection, with symptoms of febrile neutropenia, if antibiotic treatment has not been successful, should be started with a dose of Ambiz® 1.0 mg / kg / day; if necessary, the dose of the drug may be increased to 3.0 mg / kg / day.
- For the treatment of visceral leishmaniasis, a dose of 1.0-1.5 mg / kg / day for 21 days or a dose of 3.0 mg / kg / day for 10 days is applied. To treat patients with impaired immunity (eg, HIV-positive), a dose of 1.0-1.5 mg / kg / day can be used for 21 days. However, due to the risk of relapse, supportive therapy or repeated courses of treatment may be required.
Pediatric Use
Systemic fungal infections and a presumptive fungal infection with symptoms of febrile neutropenia in pediatric patients have been successfully treated with Ambiz®, with no unusual side effects noted. The drug Ambiz® was studied in patients aged from one month to 18 years. The dose of the drug should be calculated in the same way as for adults, per kilogram of body weight. The safety and efficacy of Ambiz® in children under the age of 1 month has not been established.
Special patient groups
Elderly patients
Changing the dose or frequency of dosing is not required.
Impaired renal function
In clinical trials, Ambiz® was administered to patients with an existing renal dysfunction in doses of 1.0-5.0 mg / kg / day; a change in dose or frequency of administration was not required.
Impaired liver function
There is no data to recommend a dose for patients with impaired liver function.
Instructions for reconstitution and dilution of Ambiz®
Recovering the concentrated dispersion Ambizom® preparation should be carried out with water for injection (WFI) (without preservatives) with further dilution in dextrose for infusion of different concentrations (5%, 10% or 20%).
Using other solutions for the recovery and formed the subsequent dilution of the concentrate, as well as the presence of preservatives in these solutions (e.g., benzyl alcohol) can cause precipitate to form.
Preparation of the reconstituted dispersion concentrate of Ambiz®
1. Add 12 ml of water for injection (WFI) in each vial with a preparation to produce a concentrate containing 4 mg / ml of amphotericin B liposomal.
2. Immediately after the addition of water for injection for 30 seconds vigorously shaken to fully disperse VIALS lyophilizate. After recovery the concentrate is translucent yellow dispersion with pH value between 5 and 6. The contents of the vial are checked for the presence of suspended particles and continue agitation until a homogenous dispersion.Do not use if there are undispersed agglomerates and (or) visible mechanical inclusions.
Preparation of Ambiz® dispersion for infusion
1. Calculate the amount of the reconstituted (4 mg / ml) dispersion of the preparation for its further dilution (see Table 1).
2. The infusion solution is prepared by diluting the reconstituted drug dispersion concentrate using 1 to 19 parts by volume of a dextrose solution for infusions (5%, 10%, or 20%) to obtain the final recommended concentration of amphotericin B in the range of 2.00 mg / ml to 0.20 mg / ml (see Table 1).
3. Collect the calculated volume of the reconstituted dispersion concentrate of Ambiz® in a sterile syringe. Through a filter (5 μm) supplied with the preparation, Insert the concentrate into a sterile infusion container pre-filled with the calculated amount of dextrose solution for infusions at the desired concentration (5%, 10%, or 20%).
For intravenous infusion of the drug, an integrated membrane filter can be used. However, the average pore diameter of the filter must not be less than 1.0 micron.
AT the table below is presented example preparation of Ambiz® dispersion for infusion in a dose 3 mg / kg / day in a 5% solution of dextrose for infusion. If a patient has been given a dose, different from the dose 3 mg / kg / day, necessary yourself doing new calculation.
Table 1. Example of preparation of Ambiz® dispersion for infusion at a dose of 3 mg / kg / day in a 5% solution of dextrose for infusion
Weight bodies the patient (kg) | Number bottles, necessary for cooking doses | Ambiz®, necessary for the patient (for filling for further dilution) (mg) | Scope reconstituted Ambiz® (for filling for further dilution (ml)) | To achieve a final concentration of 0.2 mg / ml (dilution 1 in 20) | To achieve a final concentration of 2.0 mg / ml (dilution 1 in 2) |
|
|
|
| Scope the required 5% dextrose (ml) | Total volume (ml of Ambiz® plus 5% dextrose) | Scope the required 5% dextrose (ml) | Total volume (ml, Ambiz® plus 5% dextrose) |
10 | 1 | 30 | 7,5 | 142,5 | 150 | 7,5 | 15 |
25 | 2 | 75 | 18,75 | 356,25 | 375 | 18,75 | 37,5 |
40 | 3 | 120 | 30 | 570 | 600 | 30 | 60 |
55 | 4 | 165 | 41,25 | 783,75 | 825 | 41,25 | 82,5 |
70 | 5 | 210 | 52,5 | 997,5 | 1050 | 52,5 | 105 |
85 | 6 | 255 | 63,75 | 1211,25 | 1275 | 63,75 | 127,5 |
* To prepare a dose for the patient, not all the contents of the vial (s) may be required.
Special conditions for storage and treatment of reconstituted and diluted products
Since Ambiz ® is NOT compatible with 0.9% sodium chloride solution, it can not be administered with an infusion system that was previously used for 0.9% sodium chloride solution without prior washing with dextrose solution (5%, 10% or 20% ) for infusion.If this is not practical, Ambiz® should be administered via a separate system.
DO NOT mix Ambiz® with other drugs or electrolytes.
Only for single use.
Any unused contents or waste materials should be disposed of in accordance with local requirements.
Conditions of drug storage, reconstituted with water for injection
If recovery and dilution are carried out in controlled and validated aseptic conditions, the following data can be used to determine the conditions and duration of storage.
Glass bottles: 24 hours at 25 ± 2 ° C under the influence of ambient light.
Glass bottles: up to 7 days at 2-8 ° C.
Polypropylene syringes: up to 7 days at 2-8 ° C.
Do not freeze.
The shelf life of the drug reconstituted with water for injection and then diluted in dextrose
Chemical and physical stability were demonstrated under the following storage conditions using dextrose solutions as a dilution medium in PVC or polyolefin infusion bags.
Table 2.Stability of the drug reconstituted with water for injection and then diluted in dextrose
Diluent | Dilution | The concentration of amphotericin B (mg / ml) | Maximum shelf life at 2-8 ° С | Maximum shelf life at 25 ± 2 ° С |
| 1 in 2 | 2,0 | 7 days | 48 hours |
5% dextrose | 1 in 8 | 0,5 | 7 days | 48 hours |
| 1 to 20 | 0,2 | 4 days | 24 hours |
10% dextrose | 1 in 2 | 2,0 | 48 hours | 72 hours |
20% dextrose | 1 in 2 | 2,0 | 48 hours | 72 hours |
A drug reconstituted with water for injection
The drug Ambiz ® is a sterile single-dose lyophilizate without preservatives. Thus, from the microbiological point of view, the drug must be used immediately after reconstitution. If the drug has not been used immediately after reconstitution, the user is responsible for the timing and conditions for storing the drug prior to use. Typically, the shelf life does not exceed 24 hours at 2-8 ° C, except when the reconstitution and dilution of the drug was carried out under controlled and validated aseptic conditions.