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Semalix 8 Pen Injection
Last updated on 12 Oct 2026 | 07:31 AM (IST)
₹4949
MRP: ₹5499
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1 PREFILLED PEN(s) OF 3ML
Semalix 8 Pen Injection
Salt Composition
SEMAGLUTIDEMarketer
TORRENT PHARMACEUTICALS LTD
Prepaid Only. Non-Returnable.
10% OFF
₹4949
MRP: ₹5,499.00
Inclusive of all taxes
10% Off
Salt Composition
SEMAGLUTIDEMarketer
TORRENT PHARMACEUTICALS LTD
Prepaid Only. Non-Returnable.
Dispatch: Today
Care delivered without the wait. Your order is prioritized for rapid dispatch to ensure it reaches your doorstep on time.
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Introduction
Semalix 8 Pen Injection contains semaglutide, a glucagon-like peptide-1 (GLP-1) receptor agonist used to improve blood glucose control in adults with type 2 diabetes mellitus. It is prescribed alongside diet and exercise, either alone when metformin is unsuitable or in combination with other medicines for diabetes.
Each prefilled pen contains 8mg of semaglutide in 3mL of solution. The medicine is administered under the skin once weekly, with the dose increased gradually according to the prescribed treatment plan.
Uses of Semalix 8 Pen Injection
Semalix 8 Pen Injection is indicated for the treatment of adults with insufficiently controlled type 2 diabetes mellitus, alongside diet and exercise.
Helps improve blood glucose control in adults with type 2 diabetes.
May be used alone when metformin-based treatment is unsuitable because of intolerance or contraindications.
May be used alongside other medicines for type 2 diabetes when additional blood glucose control is needed.
Your doctor will decide whether this medicine is suitable for you and determine the appropriate dose and duration of treatment.
How Semalix 8 Pen Injection Works
Semalix 8 contains semaglutide, which mimics the action of the naturally occurring GLP-1 hormone.
It activates GLP-1 receptors and helps regulate blood glucose by stimulating insulin release when blood glucose is high and reducing glucagon secretion. It also delays gastric emptying to some extent, which can slow the rise in blood glucose after meals.
These actions help improve blood glucose control in people with type 2 diabetes.
Interactions of Semalix 8 Pen Injection with Other Medicines
Tell your doctor about all the medicines you take before starting Semalix 8 Pen Injection.
Insulin and sulfonylureas: Using semaglutide with these medicines can increase the risk of low blood glucose. Your doctor may need to adjust their doses.
Warfarin and other coumarin anticoagulants: More frequent monitoring of blood clotting parameters may be required when semaglutide treatment is started.
Oral medicines: Semaglutide delays gastric emptying and may affect how quickly certain medicines taken by mouth are absorbed. Inform your doctor if you take medicines that require rapid absorption.
Other medicines for diabetes: Your blood glucose levels may need closer monitoring when semaglutide is added to your existing treatment.
Storage Conditions
Before first use, store the unopened pen in a refrigerator at 2°C to 8°C.
Do not freeze the medicine. Do not use it if it has been frozen.
After first use, the pen can be stored for 56 days at 15°C to 30°C or in a refrigerator at 2°C to 8°C.
Discard the pen 56 days after first use, even if some medicine remains.
Keep the pen cap on when it is not in use to protect the medicine from light.
Keep the pen away from excessive heat and out of the reach of children.
torrentpharma.com
How to Use
Use Semalix 8 Pen Injection only as prescribed by your doctor.
It is administered as a subcutaneous injection, usually into the abdomen, thigh or upper arm.
Semaglutide is generally administered once weekly, at any time of the day, with or without food.
Treatment usually begins with 0.25mg once weekly for four weeks, followed by 0.5mg once weekly. The dose may then be increased to 1mg and subsequently 2mg at intervals of at least four weeks, depending on blood glucose control and tolerability.
The 0.25mg dose is a starting dose, not a maintenance dose. Weekly doses above 2mg are not recommended for this diabetes treatment regimen.
Follow the instructions supplied with the pen and use a new needle for each injection.
Rotate injection sites and never share the pen or needle with another person.
Do not inject the medicine into a vein or muscle.
Your doctor will determine the dose and any dose changes based on your response to treatment.
Safety Advice
Pregnancy
Semaglutide should not be used during pregnancy. If you become pregnant while using this medicine or plan to become pregnant, inform your doctor. Treatment should be discontinued at least two months before a planned pregnancy.
Breast Feeding
Semaglutide should not be used while breastfeeding because a risk to the breastfed infant cannot be excluded. Inform your doctor if you are breastfeeding before starting treatment.
Lungs
Tell your doctor before undergoing surgery or a procedure requiring general anaesthesia or deep sedation. Semaglutide delays gastric emptying, which may increase the risk of stomach contents entering the lungs during such procedures.
Liver
Inform your doctor if you have liver disease. Dose adjustment is generally not required solely because of hepatic impairment, but caution is advised in people with severe liver impairment.
Alcohol
Discuss alcohol consumption with your doctor. Alcohol may affect blood glucose control and can make diabetes management more difficult. Avoid excessive consumption and follow your healthcare professional's advice.
Driving
Semaglutide generally has no or negligible direct effect on the ability to drive. However, low blood glucose may occur when it is used with insulin or a sulfonylurea. Check your blood glucose as advised and do not drive if you experience symptoms of hypoglycaemia.
Side Effects
Semalix 8 Pen Injection may cause side effects, particularly when treatment begins or the dose increases. Gastrointestinal symptoms are among the most commonly reported effects.
Common side effects
Nausea
Vomiting
Diarrhoea
Constipation
Abdominal discomfort or pain
Bloating
Indigestion
Reduced appetite
These effects may improve as your body adjusts to treatment. Eating smaller meals and maintaining adequate fluid intake may help manage mild gastrointestinal symptoms.
Serious side effects
Seek medical attention if you experience any of the following:
Severe, persistent abdominal pain: This may indicate pancreatitis, particularly if the pain spreads to the back or occurs with vomiting.
Severe allergic reactions: Swelling of the face, lips, tongue or throat, or difficulty breathing, requires emergency medical attention.
Severe dehydration: Persistent vomiting or diarrhoea can cause dehydration and may affect kidney function.
Sudden changes or loss of vision: These symptoms require prompt medical assessment, particularly in people with diabetic retinopathy.
Low blood glucose: Sweating, shaking, dizziness, confusion or weakness may occur, especially when semaglutide is used with insulin or sulfonylureas.
Symptoms of thyroid tumours: Report a lump in the neck, persistent hoarseness, difficulty swallowing or breathing to your doctor. Semaglutide is contraindicated in people with a personal or family history of medullary thyroid carcinoma or multiple endocrine neoplasia syndrome type 2 (MEN 2).
Expert Tips
Follow your prescribed weekly schedule and do not change the dose without medical advice.
Do not use Semalix 8 as a starting dose simply because the pen contains 8mg in total. Treatment begins at a lower dose and increases gradually.
Monitor your blood glucose as recommended by your doctor.
If you use insulin or a sulfonylurea, ask your doctor whether your existing doses need adjustment.
Eat balanced meals and maintain regular physical activity to support diabetes management.
Drink enough fluids, especially if you experience vomiting or diarrhoea.
Inform your doctor about any history of pancreatitis, diabetic retinopathy or thyroid-related conditions before starting treatment.
Tell your healthcare team that you use semaglutide before surgery or a procedure involving general anaesthesia or deep sedation.
Never share your pen with another person, even if you change the needle.
Discard the pen 56 days after first use, even if some medicine remains.
FAQs
Q1.
What is Semalix 8 Pen Injection used for?
Semalix 8 contains semaglutide and is used to improve blood glucose control in adults with type 2 diabetes mellitus alongside diet and exercise. It may be prescribed alone when metformin is unsuitable or with other diabetes medicines.
Q2.
What does the 8mg strength mean in Semalix?
The 8mg strength refers to the total amount of semaglutide in the 3mL pen. It does not mean that the entire 8mg should be injected at once. Follow your doctor's prescribed dose and the instructions supplied with the pen.
Q3.
How often should I use Semalix 8 Pen Injection?
Semaglutide is generally administered once weekly. Your doctor will determine the appropriate dose and schedule based on your blood glucose control and response to treatment.
Q4.
Can Semalix 8 be used with other diabetes medicines?
Yes, it may be prescribed alongside other medicines for type 2 diabetes. However, combining it with insulin or sulfonylureas can increase the risk of low blood glucose, so your doctor may need to adjust your treatment.
Q5.
What should I do if I miss a dose of Semalix 8?
According to the prescribing information, administer the missed dose as soon as possible within five days of the scheduled dose. If more than five days have passed, skip the missed dose and take the next dose on your usual day. Do not take an extra dose to compensate.
Q6.
How should I store Semalix 8 after opening?
After first use, the pen can be stored for 56 days at 15°C to 30°C or in a refrigerator at 2°C to 8°C. Discard it after 56 days, even if some medicine remains.
Q7.
Can Semalix 8 cause low blood glucose?
Semaglutide alone has a relatively low risk of hypoglycaemia. The risk increases when it is used with insulin or sulfonylureas. Your doctor may adjust these medicines and advise you on monitoring your blood glucose.
Fact Box
Molecule name | Semaglutide |
Therapeutic class | Antidiabetic medicine |
Pharmacological class | GLP-1 receptor agonist |
Indications | Type 2 diabetes mellitus in adults with insufficient glycaemic control, as an adjunct to diet and exercise |
References
Disclaimer
MrMed’s primary intention is to ensure that its consumers get information that is reviewed by experts, accurate and trustworthy. The information and contents of this website are for informational purposes only. They are not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please seek the advice of your doctor and discuss all your queries related to any disease or medicine. Do not disregard professional medical advice or delay in seeking it because of something you have read on MrMed. Our mission is to support, not replace, the doctor-patient relationship.
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Author Details

Written By
Naina Boruah
MSc Biomedical Science

Reviewed By
Dr. Tejashwin Adiga
MBBS
Last updated : 12 Oct 2026 | 07:31 AM (IST)

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