


Zenapax 25mg Injection
Product Summary :
Zenapax 25mg Injection contains daclizumab, a monoclonal antibody previously used for multiple sclerosis. It worked by modifying immune system activity to reduce relapses and delay physical disability. Common side effects included respiratory infections, skin reactions, and depression.Written By Dr. Subita Alagh, BDS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 24 Oct 2026 | 01:01 AM (IST)
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General Information



Product introduction
Zenapax 25mg Injection given by the doctor or patients should be trained in the proper technique for self-administering subcutaneous injection. You must receive the exact dose as per the prescription. An overdose of this medicine may have serious side effects on the body.
This medicine may cause common side effects, including upper respiratory tract infection and depression. It may also cause an injection site reaction (redness, pain, and swelling). The medicine can safely be used in children. Inform the doctor immediately if you experience any allergic reactions such as rash, shortness of breath, coughing, swelling, etc.
Before taking this medicine, it is important to consult your doctor if you have any ongoing medication for any underlying disease. Pregnant and breastfeeding women must inform the doctor before the initiation of this treatment. During the treatment, your doctor may advise you some laboratory tests to know the effects of the medicine on the body.
Uses of Zenapax Injection
- Multiple sclerosis (MS) : It helps to treat a condition affecting the brain and spinal cord that causes weakness, numbness, vision problems, and difficulty walking.
Benefits of Zenapax Injection
Multiple sclerosis (MS) is a disease of the brain and spinal cord in which a person’s own immune system attacks the protective sheath (called myelin) of the nerves. This leads to symptoms such as vision loss, pain, fatigue, and improper coordination. Zenapax 25mg Injection helps to suppress the body’s immune system, thereby reducing the progression of the disease. It reduces the inflammation of the damaged nerves, prevents further damage, and stabilizes your immune system.
Side effects of Zenapax Injection
- Upper respiratory tract infection
- Dermatitis
- Bronchitis (inflammation of the airways)
- Eczema
- Depression
- Nasopharyngitis (inflammation of the throat and nasal passages)
- Rash
- Influenza
- Oropharyngeal pain
- Swelling of lymph nodes
- Sore throat
- Increased alanine aminotransferase
How to use Zenapax Injection
How Zenapax Injection works
Dosage
Zenapax 25mg Injection is injected under the skin once a month. The injection was administered into the thigh, abdomen, or back of the upper arm. Patients were trained in the correct injection technique.
Quick tips
- Your doctor may check your liver function before starting treatment and regularly thereafter. Inform your doctor if you notice yellowing of eyes or skin, dark urine, or stomach pain.
- It reduces the body’s ability to fight with infection. Take caution or inform the doctor if you experience a respiratory tract infection.
- Inform your doctor if you experience suicidal thoughts or unusual changes in behavior or mood.
- Inform your doctor if you are pregnant, planning pregnancy or breastfeeding.
Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver
Frequently asked questions
Fact Box
Chemical Class
Habit Forming
Therapeutic Class
Action Class
References
- Lake DF, Briggs AD, Akporiaye ET. Immunopharmacology. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. p. 979.
- 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. 347-48.
- Daclizumab. Nutley, New Jersey: Hoffmann-La Roche inc. [Accessed 06 Apr. 2019] (online) Available from:
- Central Drugs Standard Control Organisation (CDSCO). [Accessed 06 Apr. 2019] (online) Available from:
- Daclizumab. North Ryde, Australia: Biogen Australia Pty Ltd.; 2016. [Accessed 06 Apr. 2019] (online). Available from:




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Lab tests offered by us
- CBC (Complete Blood Count)
- FBS (Fasting Blood Sugar)
- Thyroid Profile Total (T3, T4 & TSH)
- HbA1c (Glycosylated Hemoglobin)
- PPBS (Postprandial Blood Sugar)
- Lipid Profile
- Vitamin D (25-Hydroxy)
- Urine R/M (Urine Routine & Microscopy)
- Coronavirus Covid -19 test- RT PCR
- LFT (Liver Function Test)
- KFT (Kidney Function Test)
- TSH (Thyroid Stimulating Hormone) Ultrasensitive
- ESR (Erythrocyte Sedimentation Rate)
- Uric Acid, Serum
- Vitamin B12
- CRP (C-Reactive Protein), Quantitative
- Urine C/S (Urine Culture and Sensitivity)
- Serum Electrolytes
- Serum Calcium
- Serum Creatinine
- Diabetes Screening (HbA1C & Fasting Sugar)
- KFT with Electrolytes (Kidney Function Test with Electrolytes)
- Cholesterol - Total
- Hb (Hemoglobin)
- Complete Hemogram (CBC & ESR)














