Semaglutide in Thailand: Import Rules, Heat & Brands

Quick reference

Drug class: GLP-1 receptor agonist
Controlled substance: No: not scheduled under Thai narcotics or psychotropic legislation
Prescription required: Yes: prescription required in Thailand
Available locally: Limited. Ozempic has been available at private hospital pharmacies in Bangkok; supply is intermittent. Wegovy and Rybelsus availability is not confirmed. Verify before travel.
Storage: Refrigerated at 2°C to 8°C before first use; after first use, injectable pens can be kept at room temperature below 30°C for up to 56 days (Ozempic) or 28 days (Wegovy). Thailand's ambient temperature regularly exceeds 35°C, requiring active cooling.
Max supply to carry: No statutory quantity limit for personal import; a 30-day supply with supporting documentation is the standard recommended personal-use amount.
Key document: Doctor's letter on clinic letterhead stating your full name, medication name (semaglutide), brand, dose, quantity, and your prescribing doctor's registration number.
Emergency alternative: Visit a private hospital pharmacy in Bangkok (Bumrungrad, Bangkok Hospital, Samitivej) and request an emergency consultation with an endocrinologist or internal medicine specialist.

Semaglutide in Thailand: what changes when you travel

Semaglutide, sold internationally as Ozempic (weekly injectable), Wegovy (weekly injectable at higher dose), and Rybelsus (daily oral tablet), is prescription-only in Thailand and not classified as a controlled substance^[1] under Thai narcotics law. Thailand's year-round heat, regularly above 35°C, is the primary storage risk, and local brand availability at pharmacies outside Bangkok is not guaranteed.

This guide covers documentation requirements, cold-chain management in a tropical climate, customs rules, local availability at Thai private hospitals, and what to do if your supply is lost or damaged.

Medical disclaimer: This guide is for informational purposes only and does not constitute medical advice. Always consult your prescribing doctor before travelling with medication, particularly regarding supply quantities, storage requirements, and import documentation.

Before you travel

Documentation for travelling to Thailand with semaglutide

Thailand does not require an import permit for personal quantities of prescription medication, but Thai Customs recommends carrying a doctor's letter and original prescription^[2] for any injectable or quantity that exceeds a 30-day supply. The letter should be in English or accompanied by a Thai translation.

Pre-travel paperwork timeline

T-30 days
Book an appointment with your prescribing doctor to obtain a doctor's letter on clinic letterhead. Request enough supply to cover your entire trip plus a 20% buffer for delays.Prescriber letter
T-14 days
No Thai import permit is required for semaglutide. Use this window to confirm your travel insurance covers your medication and check whether your insurer requires pre-authorisation for emergency refills abroad.Insurance confirmation
Contact your insurer directly; pre-authorisation timelines vary by provider.
T-7 days
If your doctor's letter is not in English, arrange a certified Thai translation. Have the clinic stamp the translated copy.Translated letter
T-1 day
Print all documents: doctor's letter, prescription, and insurance card. Pack medication in original packaging with the pharmacy label visible. Pre-charge any cooling wallet or insulated travel case.
T-0 (border)
Semaglutide is not a controlled substance in Thailand; proactive declaration is not legally required but is recommended for injectable medications. Keep documents accessible in your carry-on without unpacking your main luggage.

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What your doctor's letter must include

Full name matching your passport, medication name (semaglutide and brand), dose and frequency, quantity carried, diagnosis (one word or ICD code is sufficient), doctor's signature and medical registration number, and clinic letterhead. An English-language letter is accepted at Thai customs; a certified Thai translation strengthens your position if questioned.

Thailand does not require notarisation or apostille on a doctor's letter for personal medication import. A simple clinic letterhead with a doctor's stamp is sufficient.

How much semaglutide to bring

Thai law does not specify a statutory personal-import quantity limit for prescription medications such as semaglutide, but a quantity consistent with personal use for the trip duration^[2] is the standard customs benchmark. Bring at least 120% of your required supply to account for delays, temperature excursions requiring disposal, or a missed dose window. Local availability outside Bangkok's major private hospitals is unreliable, so do not plan to refill routinely in-country.

Split your supply

Carry your primary supply in hand luggage and one backup pen or blister pack in checked luggage packed inside an insulated pouch. If one bag is lost or delayed, you retain access to medication. Keep both in original packaging with pharmacy labels intact.

Packing and storing semaglutide for travel

Unopened Ozempic and Wegovy pens must be refrigerated at 2°C to 8°C. Once in use, Ozempic pens can be kept at or below 30°C for up to 56 days^[3]. Thailand's average daytime temperature is 32°C to 38°C, which means an in-use pen left in a hot car, on a beach, or in a non-air-conditioned room will exceed the tolerance limit quickly. Use a medical-grade insulated travel wallet for daily carry, and refrigerate pens in your hotel minibar or room fridge every night. For more information on cold chain management for GLP-1 medications like semaglutide, see our GLP-1 travel guide.

At the airport and border

Airport security with semaglutide

Injectable semaglutide pens are subject to standard liquid restrictions unless you declare a medical exemption. Passengers with injectable medications are permitted to carry them through security in quantities exceeding 100 ml^[4] provided they are declared at the checkpoint with a supporting doctor's letter or prescription. Inform the security officer before the tray goes through the scanner. Needles and pen caps should remain capped and stored in a clear zip-lock bag alongside your medication documents.

Customs and medication import rules for Thailand

Semaglutide is not listed under Thailand's Narcotics Act B.E. 2522 (1979) or the Psychotropic Substances Act B.E. 2518 (1975), so no import permit is required. Personal quantities of prescription medication may be brought into Thailand^[2] provided you carry a valid prescription or doctor's letter. If a customs officer questions your medication, present your doctor's letter along with the original pharmacy-labelled packaging. Quantities significantly exceeding a 30-day personal supply may attract additional scrutiny.

Keep original packaging at customs

Do not decant semaglutide pens into unlabelled cases before travelling. Thai customs officers can verify medication identity from the pharmacy label and lot number on the original box. Removing the packaging makes it harder to confirm the medication is what the letter describes.

While in country

Semaglutide availability in Thailand

Brands of semaglutide available in Thailand

Brand name	Indication	Formulation	Supply note
Ozempic	Type 2 diabetes	Once-weekly subcutaneous pen	Available at major Bangkok private hospital pharmacies (Bumrungrad, Bangkok Hospital, Samitivej); intermittent availability; not widely stocked at community pharmacies
Wegovy	Chronic weight management	Once-weekly subcutaneous pen	Not confirmed as routinely available in Thailand as of mid-2025; verify directly with private hospital pharmacies before travel
Rybelsus	Type 2 diabetes	Once-daily oral tablet	Availability in Thailand not confirmed; check with private hospital pharmacies or specialist clinics in Bangkok

Ozempic is the most consistently sourced semaglutide brand at large private hospital pharmacies in Bangkok. A local prescription from a Thai-registered doctor is required^[5] to purchase semaglutide at any Thai pharmacy. Estimated retail cost for one Ozempic pen (1 mg/0.5 mL, 4-dose) is approximately ฿4,500 to ฿6,500 (~$125 to $180 / ~€115 to €165). If you are travelling for diabetes management specifically, see the Thailand diabetes travel guide for broader context on insulin and glucose management.

Finding a doctor who can prescribe semaglutide in Thailand

Private hospitals in Bangkok operate English-speaking outpatient clinics with endocrinologists and internal medicine specialists. Bumrungrad International Hospital, Bangkok Hospital, and Samitivej Hospital^[6] all have pharmacy departments that stock Ozempic for in-house patients.

An outpatient consultation with an endocrinologist at a Bangkok private hospital costs approximately ฿1,500 to ฿3,000 (~$42 to $83 / ~€38 to €76). Telemedicine platforms registered in Thailand can also issue prescriptions for existing patients, though availability for semaglutide specifically should be confirmed before relying on this route.

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Storing semaglutide while in Thailand

Store unopened pens in the hotel room refrigerator (not the freezer). Freezing semaglutide renders it unusable^[3]; if a pen has been frozen, discard it. For day trips or outdoor activities, carry in-use pens in an insulated medical pouch with a reusable ice pack. If your hotel loses power for more than 8 hours, contact the front desk immediately for access to a backup refrigeration unit. Thailand experiences power outages more frequently during the rainy season (May to October)^[7], so this is a realistic contingency to plan for rather than an edge case.

Emergencies

What to do if something goes wrong with your semaglutide in Thailand

If your medication is lost, stolen, or damaged, file a police report immediately (required by most travel insurers for reimbursement) and contact your insurance emergency assistance line. Keep a photo of your original prescription and doctor's letter on your phone as a backup to show to a local doctor.

If you run out unexpectedly, go directly to the outpatient department of Bumrungrad International Hospital (+66 2 066 8888) or Bangkok Hospital (+66 2 310 3000) in Bangkok. Because semaglutide is not a controlled substance in Thailand, a local doctor can issue a new prescription without special authorisation, though Ozempic availability at the dispensing pharmacy is not guaranteed on the same day.

“ฉันต้องการยา semaglutide | ฉันมีโรคเบาหวาน / น้ำหนักเกิน | กรุณาเรียกแพทย์ด้วย | ร้านขายยาที่ใกล้ที่สุดอยู่ที่ไหน”

I need semaglutide medication | I have diabetes / obesity | Please call a doctor | Where is the nearest pharmacy?

The Thai emergency number is 1669 (ambulance and medical emergency). For non-life-threatening situations at major tourist hospitals, walk-in attendance at the outpatient department is accepted and English-speaking staff are available around the clock at Bumrungrad and Bangkok Hospital.

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Frequently asked questions

Is semaglutide legal in Thailand?

Yes, semaglutide is legal in Thailand. It is not scheduled under Thai narcotics or psychotropic legislation, so no import permit is required. Local supply is intermittent, so bring your full trip supply. Carry a doctor's letter giving your name, the medication, brand, dose, quantity and your prescriber's registration number, and declare injectable pens at the security checkpoint.

Can I bring semaglutide (Ozempic, Wegovy) into Thailand without a permit?

Yes. Semaglutide is not scheduled under Thai narcotics or psychotropic substances legislation, so no import permit is required for personal quantities^[2]. Carry a doctor's letter, your original prescription, and keep pens in their original pharmacy-labelled packaging.

Do I need a doctor's letter to fly with semaglutide pens?

A doctor's letter is not a legal requirement at airport security, but it is strongly recommended. Security officers may question injectable medications over 100 ml, and Thai customs may request documentation for any prescription medication. The letter establishes that the pens are for personal medical use and matches the original packaging.

Is Ozempic available at pharmacies in Thailand?

Ozempic is stocked at the pharmacy departments of major private hospitals in Bangkok, including Bumrungrad, Bangkok Hospital, and Samitivej, but it is not widely available at community pharmacies outside those networks. You will need a Thai doctor's prescription to purchase it, and stock is intermittent, so do not plan your supply around in-country refills.

How do I store Ozempic or Wegovy pens in Thailand's heat?

Unopened pens must be kept refrigerated at 2°C to 8°C at all times. In-use Ozempic pens are stable below 30°C for up to 56 days^[3], but Thailand's ambient temperatures regularly exceed that threshold, so use an insulated medical travel wallet for any time away from hotel refrigeration.

What if I run out of semaglutide while travelling in Thailand?

Visit the outpatient department at Bumrungrad International Hospital (+66 2 066 8888) or Bangkok Hospital (+66 2 310 3000). A local doctor can issue a prescription for semaglutide, and the hospital pharmacy will dispense it if stock is available. Call ahead to confirm availability before travelling to the hospital.

Is Wegovy available in Thailand for weight management?

Wegovy (semaglutide at the higher weight-management dose) is not confirmed as routinely available at Thai pharmacies as of mid-2025. Ozempic (the same active ingredient at a lower dose) has more consistent supply at Bangkok private hospital pharmacies. If Wegovy is your usual brand, bring your full supply from home and do not rely on in-country replacement.

Related practical guide

GLP-1 Medications Abroad: Cold Chain Failures, Customs Traps and Approval Gaps

Your Ozempic pen survives the flight but gets confiscated at the border. Here is how cold chain failures, customs rules, and approval gaps catch GLP-1 travellers off guard.

Semaglutide in Thailand: Import Rules, Heat Storage and Brands