When you buy a Mounjaro pen, it’s important to do more than just check the dose and expiry date. In April 2026, authorities in Gurugram seized more than 260 suspected fake Mounjaro pens, which raised concerns about counterfeit injections being sold in India.
Counterfeit medicines can closely resemble genuine products. Some may contain inaccurate ingredients, while others may have been manufactured or stored under unsuitable conditions.
If you have been prescribed Mounjaro, knowing what to check before using your pen can help you avoid suspicious products. Here’s what to look for.
Key Takeaways
| ● Purchase Mounjaro only from licensed pharmacies or authorised distributors.
● Look for spelling errors, poor printing, altered labels and any signs of tampering. ● Ask about storage conditions (especially in the case of home deliveries). ● If you suspect your pen is counterfeit, get in touch with Lilly India. |
Why should you check your Mounjaro pen before you use it?
In April 2026, Haryana drug control authorities seized over 260 suspected counterfeit Mounjaro pens in Gurugram. The probe revealed an alleged illicit manufacturing and distribution setup involving counterfeit products bearing the Mounjaro brand name.
Officials spotted differences in font, colour, printing, and labelling when they compared the seized goods with genuine packaging. The stock had also been stored at the wrong temperature.
Eli Lilly India have confirmed that the products which were seized had not in fact been manufactured by Lilly or obtained through its authorised supply chain.
How to Check If Your Mounjaro Pen Is Genuine
1. Check Where You Purchased It/’
Buy Mounjaro from licensed pharmacies or authorised distributors and always use a valid prescription. Be cautious about sellers offering injections through social media, messaging applications or unfamiliar websites without asking for a prescription.
Unusually low prices can also be a warning sign, particularly when the seller cannot provide reliable information about the product’s source.
2. Inspect the Outer Packaging
Look very carefully at the carton before you open it. The counterfeits of Mounjaro that were seized in India are said to have several differences from the genuine packaging.
Look for:
- Printing quality: Blurry text, uneven printing, poorly aligned labels.
- Fonts and colours: Unusual font styles, inconsistent lettering, or colours that differ from the approved packaging.
- Spelling and labelling: Spelling errors, wrong product names, odd wording.
- Manufacturer details: Manufacturer details are missing or inconsistent.
- Signs of tampering: Damaged seals, resealed cartons or altered labels.
Even small differences are worth checking, particularly when the packaging looks unfamiliar.
3. Check the Batch Number and Expiry Date
Your Mounjaro carton should carry identifiable product information, including the batch number, manufacturing details and expiry date.
Check that these details are clearly printed and look for signs that labels have been altered, covered or replaced. The information should also be consistent across the packaging and pen.
A valid batch number or expiry date in no way proves the medicine is genuine. The counterfeits can have these details as well. If anything appears to be amiss, then get in touch with the pharmacy or Lilly India.
4. Examine the KwikPen
Check the pen for visible damage, cracks, unusual labelling or other manufacturing defects. The product should also match the prescribed strength and the details on its carton.
Whether you have been prescribed Mounjaro 2.5mg injection as an initial dose or Mounjaro 5mg as part of your treatment, check that the strength matches your prescription.
If the pen appears damaged or differs from the product information supplied with it, contact your pharmacist before using it.
5. Check How the Medicine Was Stored
Mounjaro is a temperature-sensitive medicine. Before its first use, the KwikPen should be stored in a refrigerator between 2°C and 8°C, protected from light. It must not be frozen.
Ask the pharmacy how the medicine was transported and stored, particularly if it was delivered to your home. A break in the cold chain can affect medicine quality, even when the product is genuine.
If you suspect that the pen has been exposed to unsuitable temperatures, check with your pharmacist before using it.
What Should You Do If You Suspect Your Mounjaro Pen Is Fake?
Do not use the pen if you suspect it may be counterfeit or tampered with.
Instead:
- Keep the pen, the carton and the packaging that came with it.
- Keep your purchase receipt and details of the seller.
- Get in touch with the pharmacy and ask them to help you with the verification.
- Contact Lilly India to report the suspected product.
You can get in touch with Lilly India’s patient safety team via their toll-free helpline on 1800 123 0021 or by email to mailbox_in-gps@lilly.com. They can also assist in identifying the various authorised distributors and pharmacies.
If you have already used a suspected counterfeit pen, contact your healthcare professional promptly, particularly if you experience unusual symptoms.
Conclusion
Checking where you purchased Mounjaro, reviewing its packaging and confirming how it was stored can help you spot potential warning signs. If the pen or its packaging raises concerns, avoid using it until you have sought verification.
Disclaimer: This article is for general educational purposes only and should not be construed as professional medical advice. Any prescription medication should always be used under the supervision of a qualified medical professional.