Carrying Medicines, Insulin, Inhalers and Syringes on Indian Flights (2026): What CISF Allows and the Exact Documents You Need
By Ananya Singh (Ananya Singh reports on airport security, baggage rules and travel documentation for Indian and outbound passengers.) · Published · 10 min read
Insulin, inhalers, liquid medicines over 100ml and syringes are all allowed through Indian airport security when carried correctly, but anxious travellers often pack them wrong. This 2026 guide sets out exactly what CISF and customs accept and the proof to keep ready.
The core rule: medicines belong in your cabin bag
The single most important principle is to carry all essential medicines in your cabin (carry-on) baggage, never only in checked luggage. Checked bags can be delayed, mishandled, or lost, and the cargo hold is cold and not pressure-controlled the way the cabin is. Keeping medicines with you guarantees access during the flight and during any delay, and lets you show them to security if asked. There is no rule forcing medicines into checked baggage, so keep them close.
Indian airport security, run by the CISF (Central Industrial Security Force), permits passengers to carry prescription and essential over-the-counter medicines in the cabin. Tablets and capsules rarely cause any issue. The questions tend to arise with liquids, injectables, sharps like syringes and needles, and medical devices, which is where having the right packaging and paperwork makes screening quick and stress-free.
Keep medicines in their original labelled packaging wherever possible. The label ties the medicine to a prescription and to you, which is exactly what a security officer or a customs official wants to see. Loose strips of pills in an unmarked pouch invite questions; the original box and the pharmacy label answer them before they are asked.
Insulin, syringes and needles: what CISF allows
Diabetic passengers can carry insulin, syringes, needles, pen devices, and lancets in the cabin on Indian flights. Sharps are not banned for medical use; the concern security screens for is undeclared or unjustified sharp objects, so the way to clear screening smoothly is to keep the insulin and the sharps together with proof that they are yours and medically needed. Carry the insulin in its original box with the pharmacy label, and keep a copy of the prescription that names the insulin and the supplies.
It helps to carry a short letter from your doctor stating that you are diabetic and require insulin and injection equipment to be carried and used during travel. When you reach the security check, it is sensible to proactively tell the CISF officer that you are carrying insulin and syringes for medical use, rather than letting them discover sharps in the X-ray and pause. A calm, upfront declaration with the paperwork ready turns this into a few-second formality.
Keep insulin cool but do not freeze it; a small insulated pouch with a gel pack works for the journey, and you can ask cabin crew about storage on longer flights. Pack more insulin and supplies than the trip strictly needs in case of delays, and split them across two cabin bags if you travel with someone, so a single bag mishap is not dangerous.
Inhalers, nebulisers and respiratory devices
Asthma inhalers and other metered-dose respiratory inhalers are allowed in the cabin and you should keep them within easy reach, not in the overhead bin, since you may need them quickly. They are small pressurised canisters intended for personal medical use and are accepted at security; carrying the prescription or keeping the inhaler in its labelled box removes any doubt. There is no need to surrender an inhaler to security.
If you use a nebuliser, it is a medical device and can be carried in the cabin; it may be screened separately like a laptop, and a doctor's note explaining the need helps if questioned. Note that you generally cannot rely on using an electrical nebuliser during the flight without checking with the airline first, as in-seat power and device use have their own rules, so discuss in-flight needs with the airline in advance and carry an alternative such as an inhaler.
For passengers who need supplemental oxygen, personal oxygen cylinders are typically not permitted, but many airlines allow an approved portable oxygen concentrator with advance notice and a doctor's letter. This is arranged with the airline before the day of travel, not at the security checkpoint, so plan it ahead.
Liquid medicines over 100ml and the 100ml cabin rule
The familiar cabin-liquid limit restricts most liquids, gels, and creams to containers of 100ml. Medically necessary liquids are an exception. Liquid medicines, syrups, saline, eye drops, liquid nutrition, and the gel packs used to keep insulin cool can be carried in quantities greater than 100ml when they are needed for the journey. The key is to declare them at the screening point and to carry proof, typically the prescription or a doctor's note, so the officer can verify they are genuine medical items.
Practical handling: keep these liquids separate from your other cabin liquids so you can present them quickly, and be prepared for the security officer to inspect or test them. Carry a reasonable quantity for the trip rather than a bulk supply, since 'medically necessary' means what the journey requires. Baby formula and breast milk are similarly treated as permitted essential liquids, again subject to declaration and reasonable quantities.
Declare proactively rather than hoping the liquid passes unnoticed; an undeclared large liquid that triggers the X-ray simply causes a delay while it is examined. A short, clear statement that this is medication, backed by the prescription, is all it takes. Rules can be applied slightly differently across airports, so keeping the documents ready is the safest approach.
Controlled and narcotic medicines: extra documentation
Some prescribed medicines contain controlled substances, such as certain strong painkillers, sedatives, ADHD medications, and some psychiatric drugs. These are legal to carry for personal medical use, but they attract closer scrutiny, especially on international travel and at customs rather than at the security X-ray. For these, the documentation bar is higher: carry the original prescription, keep the medicine in its original labelled packaging, and carry a signed letter from your prescribing doctor stating your name, the diagnosis, the medicine, the dosage, and that it is for your personal use.
For international journeys, the destination country's rules matter as much as India's, because a drug that is routine in India may be tightly controlled or banned abroad, and vice versa. Carry only the quantity you need for the trip plus a small buffer, never a bulk supply that could look like distribution. Where a country requires it, you may need additional permits or an officially attested prescription; check the destination's embassy or customs guidance well before you travel and verify current requirements on the official source.
At Indian customs, declare controlled medicines if asked and present the documents calmly. The combination of original packaging, a matching prescription, and a doctor's letter is what establishes legitimate personal use. Because requirements change and vary by country, always confirm the current rules for controlled medicines on the official airline, customs, or embassy website before flying.
The document kit to carry every time
Assemble a small medical document kit and keep it with the medicines in your cabin bag. At a minimum it should contain: a current prescription listing each medicine and dose; for injectables, liquids over 100ml, and controlled drugs, a signed letter from your doctor on letterhead stating your condition and the need to carry and use the medicines and any devices; and a simple typed list of your medicines, doses, timings, allergies, and an emergency contact.
Keep medicines in original labelled boxes, with strips inside their cartons rather than loose. For international travel, also carry your passport and any visa, and check whether your destination needs an attested prescription or import permit for any item. If you carry medical devices, a note identifying each device and its purpose helps at screening. Photograph the documents and store them on your phone as a backup, but keep printed copies too, since you cannot rely on a screen during a security check.
Finally, pack extra doses beyond the trip length to cover delays, split essential medicines across two bags if travelling with a companion, and keep the most critical items (insulin, inhaler, heart or seizure medication) immediately accessible. With this kit ready, the vast majority of medicine-related security and customs questions are answered in seconds. For comparing direct flights that minimise time away from a fixed medication schedule, a metasearch tool such as FlightGPT can help you find the most convenient routing.
Common mistakes that cause delays
Most medicine-related holdups at Indian airports come from a handful of avoidable errors. Packing all medicines in checked baggage is the worst, because a delayed bag leaves the passenger without essential drugs and beyond reach of any document check. Removing pills from their labelled boxes into an unmarked organiser is another, since it severs the link between the medicine and the prescription that security wants to see.
Not declaring sharps or large liquid medicines, and instead hoping they slip through the X-ray, reliably causes a pause while the item is examined; a proactive word to the officer is faster. Carrying no prescription or doctor's letter for injectables, liquids over 100ml, or controlled drugs leaves you unable to prove legitimacy if questioned. And assuming a medicine legal in India is legal everywhere can cause real trouble at a foreign customs desk.
The fix for all of these is the same: medicines in the cabin, in original packaging, with prescriptions and a doctor's letter ready, declared proactively, in quantities the trip needs, and checked against the destination's rules for anything controlled. A little preparation converts a source of travel anxiety into a non-event.
Frequently asked questions
Can I carry insulin and syringes on an Indian flight?
Yes. Insulin, syringes, needles, pens, and lancets are allowed in the cabin for medical use. Keep insulin in its original labelled box with the prescription, carry a doctor's letter, and proactively tell the CISF officer you are carrying insulin and sharps so screening clears quickly. Keep insulin cool but not frozen.
Are liquid medicines over 100ml allowed in cabin baggage in India?
Yes, when medically necessary. The 100ml cabin-liquid limit does not apply to essential liquid medicines, syrups, saline, eye drops, or insulin cooling packs. Declare them at the security checkpoint, carry them separately, and keep the prescription or doctor's note ready, as officers may inspect them.
What documents do I need to carry medicines on a flight in India?
Carry a current prescription listing each medicine, and for injectables, liquids over 100ml, or controlled drugs, a signed doctor's letter stating your condition and need. Keep medicines in original labelled packaging and a printed list of doses, allergies, and an emergency contact. For international trips, check destination rules too.
Can I carry inhalers on an Indian flight?
Yes. Asthma and metered-dose inhalers are allowed in the cabin and should be kept within easy reach, not in the overhead bin. Keep the inhaler in its labelled box or carry the prescription. Nebulisers can be carried as medical devices, but check with the airline before relying on in-flight use.
Can I fly with controlled or narcotic prescription medicines in India?
Yes, for personal use, but with extra documentation: the original prescription, original labelled packaging, and a signed doctor's letter stating your diagnosis, the medicine, dosage, and personal use. For international travel, verify the destination country's rules, as some drugs legal in India are restricted abroad. Carry only what the trip needs.
Should medicines go in checked or carry-on baggage?
Always carry-on. Checked bags can be delayed or lost, and the hold is cold and not pressure-stable, so essential medicines belong in your cabin bag where you can access them in flight and show them at security. Pack extra doses for delays and split critical medicines across two bags if travelling with someone.