Modafinil in Thailand: Import Rules & Supply

Quick reference

Drug class: Wakefulness-promoting agent
Controlled substance: No, modafinil is not listed on Thailand's narcotic or psychotropic schedules under the Narcotics Code B.E. 2564 (2021). The Thai FDA checker classes it as a general drug.
Prescription required: Yes, a doctor's letter or original prescription is required to carry modafinil into Thailand
Available locally: No registered brand names. Modafinil is not stocked at mainstream pharmacy chains. Local refill is not a reliable option.
Storage: Room temperature, 20–25°C (68–77°F), away from light and humidity. Do not refrigerate.
Max supply to carry: Up to 30 days of prescribed use, no permit. The Thai FDA describes no permit for larger quantities of general medicines.
Key document: Original prescription and doctor's letter naming your condition, dose, quantity, and prescriber registration number
Emergency alternative: Contact a neurologist or sleep specialist at a large private hospital such as Bumrungrad International or Bangkok Hospital, they are the most likely to have access to wakefulness-promoting agents, though local supply is not guaranteed.

Modafinil in Thailand: what you need to know before you fly

Modafinil, sold internationally as Provigil (US and Canada), Alertec (Canada), and Modiodal (France, Spain, Italy, Greece, and Japan), is not registered with the Thai Food and Drug Administration. No brand-name or generic modafinil is stocked at mainstream pharmacy chains in Thailand, which means you cannot refill your supply in-country.

This guide covers the Thai FDA import rules, what documents to carry, how to store your tablets in Thailand's heat and humidity, and what to do if your supply runs short.

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.

Documentation for travelling to Thailand with modafinil

Because modafinil is unregistered in Thailand, the Thai FDA requires travellers to carry a certifying letter from the prescribing doctor for a personal supply^[3]. The letter must state the patient's full name, the condition being treated, the medication name (generic and brand), dose, frequency, and total quantity carried. The Thai FDA allows medicines in the amount needed for personal use up to 30 days; if you need more, contact the Thai FDA (drug@fda.moph.go.th) before you travel.^[1]

Pre-travel paperwork timeline

T-30 days
Book an appointment with your prescribing doctor to renew your prescription and request a travel letter covering your full trip supply.Prescriber letter
T-15 days
If your stay is longer than 30 days, email the Thai FDA (drug@fda.moph.go.th) before you travel to ask how to cover the extra supply, because its guidance allows general medicines up to 30 days and describes no permit for more.Thai FDA written reply (stays over 30 days)
Keep any written reply with your documents. Otherwise plan a local prescription for the rest of your stay.
T-7 days
Confirm all documents are complete: original prescription, doctor's letter and passport copy. Consider a Thai translation of the doctor's letter for smoother customs interactions.Translated letter (optional)
T-1 day
Print all documents, do not rely on phone-only copies. Keep tablets in original packaging with the pharmacy label visible. Split your supply between hand luggage and checked baggage.
T-0 (border)
With up to 30 days' supply and the right documents, you can use the Green Channel if you have nothing else to declare. Present the doctor's letter and prescription if asked.

Carry every doc to the border

Store your prescriptions, certificates, and emergency card in an encrypted record you can pull up offline.

Set up your encrypted record

What your doctor's letter must include

Full name and address of the patient. Generic name (modafinil) and brand name. Dose and frequency. Total quantity being carried. The medical condition. Prescribing doctor's name, clinic address, and registration number. Clinic letterhead and doctor's signature. A Thai translation is not mandatory under Thai FDA rules but is strongly advisable to avoid delays at customs.

The Thai FDA does not require notarisation or an apostille for a doctor's letter covering a personal medication supply. A signed letter on clinic letterhead is sufficient for a 30-day supply.

How much modafinil to bring

The Thai FDA allows travellers to carry medicines in the amount needed for personal use up to 30 days. Because local refill is not a realistic option, bring a full 30-day supply, and for a longer stay contact the Thai FDA before travel or plan a local specialist appointment. Travel insurance policies vary on coverage for lost or confiscated medication, so check your policy before departure.

Split your supply

Carry your main supply in hand luggage and a backup in your checked baggage. If one bag is delayed or lost, you still have medication for the first days. Keep both portions in original packaging with pharmacy labels intact.

Packing and storing modafinil for travel

Modafinil tablets should be stored at 20–25°C (68–77°F), away from light and moisture^[2]. Keep tablets in original blister packs inside a dark, airtight container during transit. Bangkok's ambient temperature regularly exceeds 30°C, so avoid leaving medication in a bag stored in a hot vehicle or direct sunlight. Refrigeration is not recommended as condensation when tablets return to room temperature can accelerate degradation.

Airport security with modafinil

Modafinil tablets are solid-dose oral medication and do not trigger liquid or sharps rules at airport security. Keep them in your hand luggage in original packaging with the pharmacy label visible. Security officers at departure airports may ask what the tablets are; having your doctor's letter accessible avoids delays.

Rules on carrying prescription medication through security vary by departure country. Check with your departure airport's security authority for specific guidance. The Thai FDA rules apply at the Thai border, not at your point of departure.

Customs and medication import rules for Thailand

Modafinil is not on Thailand's narcotic or psychotropic schedules, so it is treated as an unregistered general prescription medicine at Thai customs. A 30-day personal supply accompanied by a doctor's letter^[1] can pass through the Green Channel without a permit.

The Thai FDA's 31 to 90-day permit (Form IC-2) covers narcotics and psychotropics only; its guidance describes no permit for larger quantities of a general medicine like modafinil, so keep to 30 days. Possession of modafinil without a valid prescription or doctor's letter can attract customs scrutiny because the drug is unregistered.^[4]

Keep original packaging at customs

Because modafinil is unregistered in Thailand, customs officers may be unfamiliar with it. Original blister packs with the pharmacy label, alongside your doctor's letter, provide the clearest evidence that the medication is legitimately prescribed for personal use. Loose tablets in an unlabelled container are significantly harder to explain.

Modafinil availability in Thailand

Brands of modafinil registered in Thailand

Brand name	Indication	Formulation	Supply note
No registered brand	N/A	N/A	Modafinil is not registered with the Thai FDA. No brand-name or generic modafinil product is stocked at licensed pharmacy chains. Bring your full trip supply from home.

Mainstream Thai pharmacy chains such as Boots, SaveDrug, and SuperSave do not stock modafinil because it is not registered in the Thai MIMS drug reference. Some tourist-area pharmacies in Bangkok and Phuket have been reported to sell generic modafinil without a prescription, but these products carry a documented counterfeit risk and their purchase is not legal under Thai law. Hospital-dispensed armodafinil (marketed as Nuvigil) is the closest legally available related medicine and requires a local specialist prescription.^[5]

Counterfeit risk at tourist pharmacies

Pharmacies in tourist areas that sell modafinil are operating outside Thai law. Modafinil sold through these outlets has been reported as counterfeit. There is no legal recourse if you receive a fake product, and taking an unknown tablet of unknown provenance carries a health risk. Do not rely on local purchase as a backup plan.

Finding a doctor who can help with modafinil in Thailand

Because modafinil is unregistered in Thailand, a Thai doctor cannot legally prescribe it. Large private hospitals with neurology or sleep-medicine departments, including Bumrungrad International Hospital and Bangkok Hospital, are most likely to have English-speaking neurologists and may be able to discuss alternative wakefulness agents. A private consultation with a specialist typically costs ฿1,500–฿3,000 (~$45–$89 / ~€41–€79). Learn about healthcare options and estimated costs for visitors through our Thailand travel guide.

International telemedicine platforms can connect you with a doctor licensed in your home country if you need documentation reviewed or a plan adjusted, though they cannot prescribe modafinil for local dispensing in Thailand.

Search for providers near your destination

Use Nomedic's provider search to find neurologists and specialist clinics in Thailand.

Find a provider

Storing modafinil while in Thailand

The FDA-approved storage range for modafinil tablets is 20–25°C, with excursions permitted up to 30°C^[2]. Bangkok's average daily high exceeds 33°C for most of the year, and hotel rooms without air conditioning can reach temperatures that exceed the excursion limit. Keep tablets in an air-conditioned room, away from direct sunlight and bathroom humidity.

Do not store tablets in a car, outdoor bag, or poolside area during the day. If you use an Airbnb without reliable air conditioning, a small insulated case kept in a cool internal space is sufficient. Modafinil does not require refrigeration.

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

If your medication is lost or stolen, file a police report immediately (call 191). A police report reference number supports any travel insurance claim and demonstrates to a doctor that you had a legitimate prescription.

If your supply runs out, there is no straightforward local replacement pathway. Modafinil is unregistered in Thailand and cannot be legally dispensed at pharmacies. A neurologist or sleep specialist at Bumrungrad International Hospital or Bangkok Hospital may be able to discuss clinically supervised alternatives, but they cannot prescribe modafinil itself. Contact your home prescriber via telemedicine to document the situation and explore bridging options.

Emergency phrases in Thai

“ฉันต้องการยาโมดาฟินิล”

I need modafinil

“ฉันกินยาโมดาฟินิลทุกวันตามใบสั่งแพทย์”

I take modafinil every day as prescribed by my doctor

“กรุณาช่วยเรียกหมอให้ด้วยค่ะ/ครับ”

Please call a doctor

“โรงพยาบาลหรือร้านขายยาที่เปิด 24 ชั่วโมงที่ใกล้ที่สุดอยู่ที่ไหนครับ/ค่ะ”

Where is the nearest hospital or 24-hour pharmacy?

Get these phrases in 23 languages — offline

Nomedic Translate works at the pharmacy counter even without signal.

Try Nomedic Translate

For medical emergencies in Thailand, call the ambulance service on 1669. Police can be reached on 191.^[6] Large private hospitals in Bangkok with 24-hour emergency departments include Bumrungrad International Hospital (+66 2 066 8888) and Bangkok Hospital (+66 2 310 3000).

Your medication details, ready to share

Nomedic stores your medication name, INN, dosage, and frequency in your IPS, readable by any clinician worldwide.

Go to my record

Frequently asked questions

Is modafinil legal in Thailand?

Modafinil is legal to carry into Thailand for personal use, provided you have a doctor's letter and bring no more than a 30-day supply. It is not listed as a narcotic or psychotropic substance under Thailand's Narcotics Code B.E. 2564 (2021), but it is unregistered, which means selling or distributing it in Thailand is illegal.

Can I bring modafinil into Thailand?

Yes, you can bring modafinil into Thailand for personal use. A supply of up to 30 days requires only your original prescription and a doctor's letter. The Thai FDA's guidance allows general medicines up to 30 days^[3] and describes no permit for more, so contact the Thai FDA (drug@fda.moph.go.th) before travel if you need a larger supply. Keep all documentation and original packaging accessible at customs.

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

Yes. The Thai FDA requires a certifying letter from the prescribing doctor for any personal supply of an unregistered medicine brought into Thailand. The letter must name the patient, the medication (generic name and brand), dose, quantity, and include the prescriber's registration number. Without it, your medication may be confiscated at customs.

Is modafinil available at pharmacies in Thailand?

No. Modafinil is not registered with the Thai FDA and is not stocked at licensed pharmacy chains such as Boots, SaveDrug, or SuperSave. No brand-name products such as Provigil, Alertec, or Modiodal are available locally. Some tourist-area outlets may offer unlicensed generics, but these carry a significant counterfeit risk and are not a safe or legal alternative.

What if I run out of modafinil in Thailand?

There is no reliable local replacement pathway. Modafinil cannot be legally prescribed or dispensed in Thailand. Contact a neurologist at a large private hospital such as Bumrungrad International or Bangkok Hospital to discuss alternatives, and speak with your home prescriber via a telemedicine platform to document your situation and adjust your plan.

Is Provigil available in Thailand?

Provigil (the US and Canadian brand name for modafinil) is not registered in Thailand and cannot be purchased locally. Modiodal (the brand name used in France, Spain, Italy, Greece, and Japan) and Alertec (Canada) are equally unavailable. Bring your full supply from your home country, as there is no equivalent registered product to substitute.

Related practical guide

Modafinil at the Border: What Customs Officers Know That Travellers Don't

Modafinil is legal in dozens of countries but banned or strictly controlled in others. Here is what happens when you cross the wrong border without the right paperwork.

Modafinil in Thailand: 30-Day Import Limit and Supply Gap