Naloxonum Hidrohloricum Vzf

Leaflet attached to the packaging: patient information

Warning! Keep the leaflet! Information on the immediate packaging in a foreign language.

Naloxonum Hydrochloricum WZF

400 micrograms/ml, solution for injection

Naloxoni hydrochloridum

You should carefully read the contents of the leaflet before using the medicine, as it contains important information for the patient.

• You should keep this leaflet so that you can read it again if necessary.
• In case of any doubts, you should consult a doctor, pharmacist, or nurse.
• This medicine has been prescribed specifically for you. Do not pass it on to others. The medicine may harm another person, even if the symptoms of their illness are the same.
• If the patient experiences any side effects, including any side effects not listed in this leaflet, they should tell their doctor, pharmacist, or nurse. See section 4.

Table of contents of the leaflet

• 1. What is Naloxonum hydrochloricum WZF and what is it used for
• 2. Important information before using Naloxonum hydrochloricum WZF
• 3. How to use Naloxonum hydrochloricum WZF
• 4. Possible side effects
• 5. How to store Naloxonum hydrochloricum WZF
• 6. Contents of the packaging and other information

1. What is Naloxonum hydrochloricum WZF and what is it used for

Naloxonum hydrochloricum WZF contains the active substance naloxone and belongs to a group of medicines called opioid antagonists.
Naloxonum hydrochloricum WZF reverses (blocks) the unwanted effects of strong painkillers - opioids (e.g., morphine), such as breathing difficulties and drowsiness.
Naloxonum hydrochloricum WZF is used:

• in case of overdose of strong painkillers (opioids) and severe breathing difficulties;
• to reverse the effects of opioids used during surgery;
• to treat breathing difficulties in newborns whose mothers received opioids during childbirth;
• to determine if the cause of poisoning is opioids.

Naloxonum hydrochloricum WZF is always administered by medical personnel.

2. Important information before using Naloxonum hydrochloricum WZF

When not to use Naloxonum hydrochloricum WZF:

• if the patient is allergic to naloxone or any of the other ingredients of this medicine (listed in section 6).

Warnings and precautions

Before starting to use Naloxonum hydrochloricum WZF, you should discuss it with your doctor or pharmacist.
The doctor will exercise special caution when using Naloxonum hydrochloricum WZF and will take appropriate action:

• if the patient has taken too much opioid or is addicted to opioids, acute withdrawal syndrome may develop, with symptoms such as high blood pressure, rapid heartbeat, severe breathing difficulties, or cardiac arrest, which can sometimes be fatal;
• if withdrawal symptoms occur, such as nausea, vomiting, diarrhea, weakness, rapid heartbeat, increased blood pressure, fever, runny nose, sneezing, piloerection (so-called "goosebumps"), sweating, yawning, nervousness, anxiety, irritability, tremors, abdominal cramps, pain in various parts of the body; in newborns, seizures, excessive crying, and increased reflexes may occur;
• if Naloxonum hydrochloricum WZF is to be administered to a newborn whose mother took opioids before childbirth or is addicted to opioids, as severe withdrawal symptoms may occur in the newborn;
• if the patient has heart disease or cardiovascular disease, or is taking heart medications, or medications with undesirable effects on the cardiovascular system, as these patients are at greater risk of side effects, such as irregular heartbeat, high or low blood pressure, or breathing difficulties;
• if the patient has used a strong painkiller - buprenorphine or pentazocine, as the effectiveness of Naloxonum hydrochloricum WZF is limited in this case;
• if breathing difficulties occur after using Naloxonum hydrochloricum WZF, as this may be due to the fact that the duration of action of naloxone is shorter than that of opioids;
• if Naloxonum hydrochloricum WZF is administered after surgery, during which opioids were used, as symptoms such as nausea, vomiting, tremors, high blood pressure, and rapid heartbeat may occur (see section 4);
• if the patient has liver or kidney disease.

Naloxonum hydrochloricum WZF and other medicines

You should tell your doctor about all medicines you are currently taking or have recently taken, as well as any medicines you plan to take.
You should inform your doctor if you have used or are using:

• strong painkillers (e.g., morphine, codeine, buprenorphine, pentazocine);
• sleeping pills and/or sedatives;
• medicines that may affect the heart or cardiovascular system (e.g., medicines used to treat high blood pressure, tricyclic antidepressants, calcium antagonists, beta-adrenergic blockers, digoxin, clonidine, cocaine, methamphetamine). Severe high blood pressure has been reported during the administration of naloxone hydrochloride in cases of clonidine-induced coma.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant, or plan to have a child, you should consult your doctor before using this medicine.
You should tell your doctor if you:

• are pregnant;
• think you may be pregnant;
• plan to become pregnant;
• are breastfeeding. The decision to use Naloxonum hydrochloricum WZF during pregnancy or breastfeeding is made by the doctor. Naloxonum hydrochloricum WZF may cause withdrawal symptoms in newborns (see information above). Naloxone may be used in pregnant women only when, in the doctor's opinion, its use is absolutely necessary. You should avoid breastfeeding for 24 hours after using the medicine.

Driving and using machines

You should not drive vehicles or operate machines for at least 24 hours after using the medicine.

Naloxonum hydrochloricum WZF contains sodium

The medicine contains 3.36 mg of sodium (the main component of common salt) in each ml of solution. This corresponds to 0.17% of the maximum recommended daily intake of sodium in the diet for adults.
The medicine contains 84 mg of sodium (the main component of common salt) in the maximum daily dose of 10 mg of naloxone (25 ml of solution). This corresponds to 4.2% of the maximum recommended daily intake of sodium in the diet for adults.
The medicine can be diluted - see below "Information intended exclusively for healthcare professionals". When calculating the total sodium content in the prepared, diluted solution, the sodium content from the diluent solution should be taken into account. To obtain accurate information about the sodium content in the diluent solution, you should consult the product characteristics of the medicinal product used as the diluent solution.

3. How to use Naloxonum hydrochloricum WZF

Naloxonum hydrochloricum WZF is always administered by medical personnel.
The medicine can be administered:

• intravenously - injected directly into a vein or administered in a drip;
• intramuscularly;
• subcutaneously. The dose of the medicine is determined by the doctor. The administered dose depends on the patient's weight, condition, and the type and amount of opioid used.

Using a higher dose of Naloxonum hydrochloricum WZF than recommended

• After using higher doses of naloxone, pain may recur and muscle tension may return.
• The medicine is administered by medical personnel, so it is unlikely that the patient will receive more medicine than they should.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.
All medicines can cause allergic reactions, but severe allergic reactions after using this medicine are very rare. If you experience wheezing, breathing difficulties, swelling of the eyelids, face, or lips, rash, or itching (especially all over the body), you should see a doctor immediately.
The following side effects have been reported:

• Very common (occurring in more than 1 in 10 patients): nausea.
• Common (occurring in less than 1 in 10 patients):
• dizziness;
• headache;
• rapid heartbeat;
• low or high blood pressure;
• vomiting;
• postoperative pain.

Uncommon (occurring in less than 1 in 100 patients):

• tremors, sweating;
• heart rhythm disorders, slow heartbeat;
• diarrhea;
• dry mouth;
• irritation of the blood vessel walls after intravenous administration of the medicine;
• local irritation, burning, and redness at the site of intramuscular administration of the medicine;
• too rapid and deep breathing.

Rare (occurring in less than 1 in 1,000 patients):

• seizures;
• muscle tension. Very rare (occurring in less than 1 in 10,000 patients):
• severe heart disorders (ventricular fibrillation, cardiac arrest);
• pulmonary edema (symptoms include fluid in the lungs, breathing difficulties, apnea);
• erythema multiforme (symptoms include usually extensive changes in the form of blisters and rash on the skin, changes in skin color, and damage to the mucous membrane and skin);
• allergic reactions (symptoms include usually hives, rhinitis, dyspnea, facial edema), anaphylactic shock (severe allergic reaction).

Reporting side effects

If you experience any side effects, including any side effects not listed in this leaflet, you should tell your doctor, pharmacist, or nurse. Side effects can be reported directly to the Department of Monitoring of Adverse Reactions to Medicinal Products of the Office for Registration of Medicinal Products, Medical Devices, and Biocidal Products, Al. Jerozolimskie 181C, 02-222 Warsaw, tel.: +48 22 49 21 301, fax: +48 22 49 21 309, website: https://smz.ezdrowie.gov.pl.
By reporting side effects, you can help gather more information on the safety of the medicine.

5. How to store Naloxonum hydrochloricum WZF

The medicine should be stored out of sight and reach of children.
Store in a temperature below 25°C.
Store the ampoules in the outer packaging to protect them from light.
Do not use this medicine after the expiry date stated on the packaging. The expiry date refers to the last day of the specified month.
Medicines should not be disposed of via wastewater or household waste. You should ask your pharmacist how to dispose of medicines that are no longer needed. This will help protect the environment.

6. Contents of the packaging and other information

What Naloxonum hydrochloricum WZF contains

• The active substance of the medicine is naloxone hydrochloride. Each ml of solution contains 400 micrograms of naloxone hydrochloride (in the form of naloxone hydrochloride dihydrate).
• The other ingredients are: sodium chloride, diluted hydrochloric acid (to adjust pH), water for injections.

What Naloxonum hydrochloricum WZF looks like and what the packaging contains

Naloxonum hydrochloricum WZF is a colorless, clear solution for injection.
The glass ampoules containing 1 ml of solution are packaged in a cardboard box. The cardboard box contains 10 ampoules.
For more detailed information, you should contact the marketing authorization holder or the parallel importer.

Marketing authorization holder in Bulgaria, the country of export:

Warszawskie Zakłady Farmaceutyczne Polfa S.A.
ul. Karolkowa 22/24
01-207 Warsaw, Poland

Manufacturer:

Warszawskie Zakłady Farmaceutyczne Polfa S.A.
ul. Karolkowa 22/24
01-207 Warsaw, Poland

Parallel importer:

InPharm Sp. z o.o.
ul. Strumykowa 28/11
03-138 Warsaw

Repackaged by:

InPharm Sp. z o.o. Services sp. k.
ul. Chełmżyńska 249
04-458 Warsaw
Marketing authorization number in Bulgaria, the country of export:20030166

Parallel import authorization number: 250/22 Date of approval of the leaflet: 08.06.2022

Information intended exclusively for healthcare professionals:

Naloxonum hydrochloricum WZF

400 micrograms/ml, solution for injection

Naloxoni hydrochloridum

Method of administration of Naloxonum hydrochloricum WZF

The medicine is administered intravenously, intramuscularly, or subcutaneously, or as an intravenous infusion after prior dilution.
In the case of intravenous infusion, the solution should be diluted with sodium chloride 0.9% or glucose 5% solution as follows: 2000 micrograms (5 ml of solution containing 400 micrograms/ml of naloxone) in 500 ml of diluent. The resulting solution after dilution contains 4 micrograms of naloxone in 1 ml. The solution should be prepared immediately before administration.
Note: Naloxonum hydrochloricum WZF should not be administered in the same intravenous drip as other medicines.
During the use of the medicine, it is necessary to ensure the possibility of oxygen therapy and resuscitation treatment, as well as access to equipment that allows for cardiopulmonary resuscitation.

Instructions for opening the ampoule

Before opening the ampoule, you should make sure that the entire solution is in the lower part of the ampoule.
You can gently shake the ampoule or tap it with your finger to facilitate the flow of the solution.
A white dot (see Figure 1) is placed on each ampoule as a mark indicating the location of the break point below it.

• To open the ampoule, you should hold it vertically in both hands, with the white dot facing you - see Figure 2. The upper part of the ampoule should be grasped in such a way that the thumb is above the white dot.
• Press in the direction of the arrow shown in Figure 3.

The ampoules are intended for single use only and should be opened immediately before use. The remaining contents of the unused medicine should be destroyed in accordance with applicable regulations.
Figure 1.

Figure 2.

Figure 3.

Dosing of Naloxonum hydrochloricum WZF

The dose of naloxone and the route of administration depend on the patient's condition, the type of opioid used, and its amount.

Opioid poisoning

Adults
Usually, an initial single dose of 400 to 2000 micrograms is administered intravenously.
If necessary, the intravenous dose can be repeated every 2-3 minutes until the patient regains consciousness and has a regular, measured breathing pattern. If there is no temporary improvement in respiratory function and no return of consciousness after administering 10 mg, the cause of these symptoms is probably not an opioid overdose.
The medicine can also be administered intramuscularly or subcutaneously. In life-threatening situations, the medicine should be administered intravenously.
Children
Usually, the initial single dose administered intravenously is 10 micrograms per kilogram of body weight. If necessary, an additional dose of 100 micrograms per kilogram of body weight can be administered.
If it is not possible to administer naloxone intravenously, the medicine should be used intramuscularly or subcutaneously in divided doses.

Reversal of anesthesia induced by opioids

Adults
Usually, 100 micrograms to 200 micrograms are administered intravenously, i.e., 1.5-3 micrograms per kilogram of body weight.
In some cases, especially when a long-acting opioid has been used, it may be necessary to administer an additional dose of naloxone intramuscularly within 1-2 hours. The medicine can also be administered as an intravenous infusion.
Children
Intravenously, 10 micrograms per kilogram of body weight. If necessary, an additional dose of 100 micrograms per kilogram of body weight can be administered.
If it is not possible to administer naloxone intravenously, the medicine should be used intramuscularly or subcutaneously in divided doses. The medicine can also be administered as an intravenous infusion.

Reversal of respiratory depression in newborns caused by the administration of opioid analgesics to the mother during childbirth

Newborns
In case of apnea, it should be ensured that the airway is maintained before administering the medicine.
Intravenously, intramuscularly, or subcutaneously, 10 micrograms per kilogram of body weight. If necessary, the dose can be repeated after 2-3 minutes.
It is also possible to administer a single dose of naloxone intramuscularly, 200 micrograms (i.e., approximately 60 micrograms per kilogram of body weight).

Differential diagnosis of opioid poisoning

Intravenous administration of a dose of 0.5 micrograms per kilogram of body weight of naloxone allows for the determination of whether respiratory depression or urinary retention is not caused by an opioid. Then, the dose of naloxone can be gradually increased, avoiding too high doses. High doses eliminate all effects of opioids, including analgesic effects, and also cause stimulation of the sympathetic nervous system and the cardiovascular system.