By Dr. Moxit Shah, DM Endocrinologist
Vishuddha Endocrine Clinic, Ahmedabad
Weekly GLP-1 injections such as Ozempic (Semaglutide), Wegovy (Semaglutide) and Mounjaro (Tirzepatide) are now widely used in India for Type 2 Diabetes and Obesity.
But a medicine only works if it is injected and stored correctly.
Heat, freezing, wrong injection technique and missed doses are common reasons for poor results or extra side effects. This guide explains how to use a GLP-1 pen, where to inject, how to store it in Indian summers, and how to travel with it.
Always follow the instruction leaflet for your specific pen, as details differ between products.
How often and when should I take a GLP-1 injection?
Semaglutide and Tirzepatide injections are taken once a week, on the same day each week.
- Any time of day
- With or without food
- Choose a day you will remember, for example every Sunday morning
Liraglutide, an older GLP-1 medicine, is injected once daily.
Where should I inject a GLP-1 pen?
GLP-1 medicines are injected under the skin (subcutaneously), not into a muscle or vein. Suitable sites:
- Abdomen: at least 5 cm (2 inches) away from the navel
- Front of the thighs
- Back of the upper arm, usually easier if someone else gives it
Rotate your injection site every week. Using exactly the same spot repeatedly can cause lumps under the skin. Avoid skin that is bruised, scarred, hard or tender.
Step-by-step: how to use a GLP-1 pen
- Wash your hands.
- Check the pen name, dose and expiry date.
- Check that the medicine is clear and colourless. Do not use it if it is cloudy or has particles.
- Attach a new needle if your pen needs one.
- Do the flow check or priming step if your pen’s leaflet requires it.
- Set or select the prescribed dose.
- Clean the skin and inject at your chosen site, holding the pen in place for the time your leaflet advises.
- Remove and safely discard the needle.
Ask your clinic team to demonstrate the first injection. Most patients find it much easier than expected.
“It was less painful than a blood test.”
How should GLP-1 pens be stored?
Before first use:
- Store in the refrigerator at 2–8°C
- Keep away from the freezer compartment and the back wall of the fridge
- Never freeze. A pen that has been frozen should not be used, even after thawing
After first use:
Many pens can be kept at room temperature, usually below 30°C, for a limited number of days, or returned to the fridge. The number of days differs between products, so check your leaflet.
In Indian summers, room temperature often exceeds 30°C. Unless your leaflet says otherwise, keeping the pen in the fridge between doses is the safer choice.
- Keep the cap on to protect from light
- Never leave a pen in a parked car or in direct sunlight
- Do not store it with the needle attached
How do I travel with a GLP-1 pen?
- Carry it in your hand luggage, never in checked-in bags, where it may freeze or get lost
- Use an insulated cool pouch, with a cool pack that does not touch the pen directly
- Carry a copy of your prescription
- Take spare needles and a small sharps container
- Keep to your usual weekly day, adjusting sensibly for time zones
How should used needles be disposed of?
Use a new needle for each injection. Put used needles in a sharps container or a hard plastic bottle with a tight lid, and ask your clinic or pharmacy about disposal.
Never share a pen with another person, even if the needle is changed.
What if I miss my weekly dose?
The rules depend on the medicine and how many days have passed. For Semaglutide the window is up to 5 days after the missed day; for Tirzepatide it is up to 4 days. After that, skip it and take the next dose on your usual day.
Our detailed guide explains what to do if you forget your Mounjaro or Ozempic dose. If you have missed several weeks, speak to your doctor before restarting, as a lower dose may be needed.
Common injection-site problems
- Mild redness or itching: usually settles on its own
- Small bruise: common, harmless
- Lumps: rotate sites more consistently
Seek medical advice for spreading redness, swelling, warmth or pain, or any signs of an allergic reaction.
For stomach-related effects, read our guide to GLP-1 side effects.
Should I increase my dose myself?
No.
GLP-1 medicines are started at a low dose and increased gradually to reduce side effects. The maximum dose is not necessarily the ideal dose for every patient. Learn more about GLP-1 dose escalation.
Be careful where you buy GLP-1 medicines
WHO has warned about falsified and substandard GLP-1 medicines. Buy only on a valid prescription from a licensed pharmacy, and be cautious of unusually cheap products or those sold through social media.
GLP-1 treatment in Ahmedabad
At Vishuddha Endocrine Clinic, Dr. Moxit Shah provides endocrinology-based assessment for GLP-1 therapy in Diabetes and Obesity, including injection training, dose planning and monitoring.
Frequently Asked Questions About GLP-1 Pens
Can I inject Ozempic or Mounjaro at night?
Yes. Any time of day is fine, as long as it is the same day each week.
Does a GLP-1 pen need to be kept in the fridge?
Unused pens, yes, at 2–8°C. After first use, many can stay below 30°C for a limited time. Check your leaflet.
Can I use a pen that was frozen?
No. Frozen GLP-1 medicine should not be used.
Which injection site works best?
The abdomen, thigh and upper arm all work. Rotate between them.
Can I carry my GLP-1 pen on a flight?
Yes, in your hand luggage with your prescription, in a cool pouch.
Final Takeaway
Correct technique and storage protect both your results and your safety.
Same day every week + rotate injection sites + fridge storage + never freeze + hand luggage when travelling + no self-escalation + genuine medicines only.
If you are starting GLP-1 treatment in Ahmedabad, consult an endocrinologist for proper assessment and training.
Dr. Moxit Shah
DM Endocrinologist
Vishuddha Endocrine Clinic, Ahmedabad
📞 +91 99799 92797
📍 Elite Magnum, Bhuyangdev Cross Road, Ahmedabad
🌐 endocrinologistinahmedabad.com
This article is for educational purposes only and does not replace an individual medical consultation. Prescription medicines should be started, adjusted or stopped only under the supervision of a qualified healthcare professional.
