Nalox 400mcg Injection
Written By Dr. Swati Mishra, BDS
Reviewed By Dr. Lalit Kanodia, MBA, MD Pharmacology
Last updated on 12 Nov 2024 | 01:10 AM (IST)
Nalox 400mcg Injection is an opioid antagonist. It is used for the treatment of opioid toxicity. It helps to reverse the depressant effect on breathing, and on other parts of the body. It also helps to determine if a patient has taken an overdose of opioids.
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General Information
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Product introduction
Nalox 400mcg Injection is given as an injection into veins, muscle, or under the skin by a doctor or nurse. It is advisable not to self-administer the injection. Your doctor or nurse will train your family member or caregiver about how to inject the medicine in case of an emergency. It is advisable to follow your doctor's advice while being on the treatment.
The most common side effects of this medicine include injection site redness, dizziness, headache and increased or decreased blood pressure. Most of these usually go away within a short time of the injection. If you are bothered by them or they go on for longer, talk to your doctor or nurse. You should not drive if this medicine makes you feel dizzy.
Before taking it, tell your doctor if you have heart problems, high blood pressure, or high heart rate. This may affect your treatment. Pregnant or breastfeeding women should consult their doctor before taking this medicine. Some other medicines you are taking may interfere with it, so make sure your doctor knows about all the other medicines you are using.
The most common side effects of this medicine include injection site redness, dizziness, headache and increased or decreased blood pressure. Most of these usually go away within a short time of the injection. If you are bothered by them or they go on for longer, talk to your doctor or nurse. You should not drive if this medicine makes you feel dizzy.
Before taking it, tell your doctor if you have heart problems, high blood pressure, or high heart rate. This may affect your treatment. Pregnant or breastfeeding women should consult their doctor before taking this medicine. Some other medicines you are taking may interfere with it, so make sure your doctor knows about all the other medicines you are using.
Uses of Nalox Injection
- Opioid toxicity
Benefits of Nalox Injection
Opioid toxicity
Opioid toxicity or opioid overdose can be life-threatening and requires immediate medical attention. It is most commonly seen in people who take opioids containing painkillers or those who are indulged in drug abuse. Nalox 400mcg Injection helps to reverse the effects of opioid toxicity such as reduced breathing, confusion, lessened alertness, and loss of consciousness.
Nalox 400mcg Injection is given as an injection by a doctor or a nurse and should not be self-administered. If you are a caregiver to a person who is on opioids, you need to be trained well by a healthcare professional to administer Nalox 400mcg Injection in case there is an emergency and you do not have access to medical services immediately.
Opioid toxicity or opioid overdose can be life-threatening and requires immediate medical attention. It is most commonly seen in people who take opioids containing painkillers or those who are indulged in drug abuse. Nalox 400mcg Injection helps to reverse the effects of opioid toxicity such as reduced breathing, confusion, lessened alertness, and loss of consciousness.
Nalox 400mcg Injection is given as an injection by a doctor or a nurse and should not be self-administered. If you are a caregiver to a person who is on opioids, you need to be trained well by a healthcare professional to administer Nalox 400mcg Injection in case there is an emergency and you do not have access to medical services immediately.
Side effects of Nalox Injection
Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Nalox
- Dizziness
- Injection site redness
- Decreased blood pressure
- Headache
- High blood pressure
How to use Nalox Injection
Your doctor or nurse will give you this medicine. Kindly do not self administer.
How Nalox Injection works
Nalox 400mcg Injection is an opioid antagonist. Opioid medicines are strong painkillers, which in high doses can cause life-threatening side effects such as difficulty in breathing.
Nalox 400mcg Injection works by blocking the effects of opioids leading to reversal of these side effects.
Quick tips
- It is given as an injection into veins, muscle or under the skin by the healthcare professionals only.
- Nalox 400mcg Injection might make you feel dizzy. If this happens, avoid driving or operating on machinery.
- Inform the doctor if you are taking any pain killers, sleeping pills (sedatives), narcotic painkillers, or other medicines
- Avoid consuming alcohol while taking the medicine as it can affect the working of the medicine.
Safety advice

Alcohol
UNSAFE
It is unsafe to consume alcohol with Nalox 400mcg Injection.

Pregnancy
SAFE IF PRESCRIBED
Nalox 400mcg Injection is generally considered safe to use during pregnancy. Animal studies have shown low or no adverse effects to the developing baby; however, there are limited human studies.

Breast feeding
SAFE IF PRESCRIBED
Nalox 400mcg Injection is probably safe to use during breastfeeding. Limited human data suggests that the drug does not represent any significant risk to the baby.

Driving
SAFE
Nalox 400mcg Injection does not usually affect your ability to drive.

Kidney
SAFE IF PRESCRIBED
Nalox 400mcg Injection is probably safe to use in patients with kidney disease. Limited data available suggests that dose adjustment of Nalox 400mcg Injection may not be needed in these patients. Please consult your doctor.

Liver
CONSULT YOUR DOCTOR
There is limited information available on the use of Nalox 400mcg Injection in patients with liver disease. Please consult your doctor.

Fact Box
Chemical Class
Phenanthrenes derivatives
Habit Forming
No
Therapeutic Class
NEURO CNS
Action Class
Opioid Antagonist
Related lab tests
References
- Yaksh TL, WallaceIn MS. Opioids, Analgesia, and Pain Management. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. 12th ed. New York, New York: McGraw-Hill Medical; 2011. p. 512.
- Schumacher MA, Basbaum AI, Way WL. Opioids Analgesics & Antagonists. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. pp. 547-48.
- Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 952-53.
- Naloxone hydrochloride dihydrate. King William Street, London: Advanz Pharma; 1990 [revised 30 Aug. 2012]. [Accessed 6 Apr. 2019] (online) Available from:
- Medscape. Naloxone. [Accessed 6 Apr. 2019] (online) Available from:
- Drugs.com. Naloxone injection. [Accessed 06 Apr. 2019] (online) Available from:
- Naloxone. Richmond: Kaleo, Inc.; 1971 [revised Apr. 2014]. [Accessed 6 Apr. 2019] (online) Available from:
- Central Drugs Standard Control Organisation (CDSCO). [Accessed 6 Apr. 2019] (online) Available from:

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Patient concerns
Is there any toxic effect for the drug garoin(phenobarbitone and phenytoin) in constipation child If the child doesnot having epilepsy also??
Dr. Gopal Samdani
Paediatrics
Toxicity is dose dependent
Ferrous sulphate tablets toxicity
Dr. Megha Gupta
Obstetrics and Gynaecology
There is no toxicity as such. Please be specific in what respect are you asking.
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Marketer details
Name: Samarth Life Sciences Pvt Ltd
Address: Samarth House, 168, Bangur Nagar, Off Link Road, Near Ayappa Temple & Kallol Kali Temple, Goregaon (W), Mumbai - 400 090.
Address: Samarth House, 168, Bangur Nagar, Off Link Road, Near Ayappa Temple & Kallol Kali Temple, Goregaon (W), Mumbai - 400 090.
Vendor Details
Country of origin: India
Lab tests offered by us
- CBC (Complete Blood Count)
- FBS (Fasting Blood Sugar)
- Thyroid Profile Total (T3, T4 & TSH)
- HbA1c (Glycosylated Hemoglobin)
- Glucose - Postprandial
- Lipid Profile
- Vitamin D (25-Hydroxy)
- Urine R/M (Urine Routine & Microscopy)
- Coronavirus Covid-19 Test (RT-PCR technique)
- LFT (Liver Function Test)
- Kidney Function Test
- TSH (Thyroid Stimulating Hormone) Ultrasensitive
- ESR (Erythrocyte Sedimentation Rate)
- Uric Acid
- Vitamin B12
- C- Reactive Protein Quantitative
- Urine Culture and Sensitivity
- Serum Electrolyte
- Serum Calcium
- Creatinine
- Diabetes Screening
- KFT with Electrolytes (Kidney Function Test with Electrolytes)
- Cholesterol - Total
- Hemoglobin
- Complete Haemogram
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