Guanfacine in Mexico: Import Rules & Availability

Quick reference

Drug class: α2A adrenergic agonist
Controlled substance: No: not scheduled under COFEPRIS controlled substance lists
Prescription required: Yes
Available locally: Limited: no major branded product confirmed in Mexican pharmacies; generic may be available at select pharmacies
Storage: Room temperature, 20–25°C, away from moisture and light
Max supply to carry: No statutory import cap for non-controlled prescription medications; bring your full trip supply plus a buffer
Key document: Doctor's letter in Spanish (or with certified translation), original prescription, original pharmacy packaging
Emergency alternative: Visit a private clinic or hospital in a major city and request an urgent psychiatric or neurological consultation to obtain a local prescription.

Taking guanfacine to Mexico: what changes

Guanfacine, sold internationally as Intuniv and Tenex, is a prescription-only medication in Mexico and is not scheduled as a controlled substance under COFEPRIS (Comisión Federal para la Protección contra Riesgos Sanitarios)^[1] narcotics or psychotropics lists. No specific brand of guanfacine is reliably stocked in Mexican pharmacy chains, so bringing your full supply is essential.

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 Mexico with guanfacine

Mexican customs rules require that prescription medications be accompanied by the original prescription or a doctor's letter. Under COFEPRIS import guidelines for personal-use medicines^[2], a doctor's letter on clinic letterhead confirming the diagnosis and prescribed medication is sufficient for non-controlled drugs. Because guanfacine is not widely available in Mexican pharmacies, the letter should also specify the quantity you are carrying and your travel dates.

Pre-travel paperwork timeline

T-30 days
Book a prescriber appointment to renew your prescription and request a doctor's letter for travel. Confirm the quantity you need for your trip plus a buffer.Prescriber letter
T-14 days
No COFEPRIS import permit is required for non-controlled prescription medications. Use this time to confirm your pharmacy can dispense your full supply in original packaging and blister packs.Original prescription
Guanfacine is not a controlled substance under COFEPRIS lists, so no advance permit application is needed.
T-7 days
Obtain a certified Spanish translation of your doctor's letter if the original is not in Spanish. Have your clinic stamp and sign the translated version.Translated letter
T-1 day
Print all documents and keep printed copies separate from the originals. Ensure medication is in original packaging with the pharmacy dispensing label visible on each box or bottle.
T-0 (border)
Keep documents in your carry-on, accessible without unpacking bags. If a customs officer asks, present the doctor's letter, prescription, and original packaging together.

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What your doctor's letter must include

Full legal name, medication generic name (guanfacine) and brand name (Intuniv or Tenex), dose and frequency, quantity carried, condition name, travel dates, doctor's full name and medical registration number, and clinic letterhead with stamp. A Spanish version or certified translation is recommended for Mexico.

A certified translation into Spanish is advisable but not legally mandatory for non-controlled medications. Notarisation or an apostille is not required for personal-use prescription medicines at Mexican customs.

How much guanfacine to bring

Mexico does not impose a statutory day-limit on importing non-controlled prescription medications for personal use, so you can bring your full trip supply. COFEPRIS guidelines recommend the quantity be consistent with the prescribed duration^[2] and documented in the accompanying letter. Bring at least 20% more than you expect to use to account for delays, lost luggage, or an extended stay. Obtaining a local refill is difficult given limited availability, so self-sufficiency is critical.

Split your supply

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

Packing and storing guanfacine for travel

Guanfacine tablets should be stored at controlled room temperature between 20°C and 25°C (68°F to 77°F)^[3], away from moisture and direct light. Mexico's coastal and lowland regions regularly exceed 35°C, so avoid leaving medication in a car, in checked luggage on a hot tarmac, or on a windowsill. An insulated travel pouch is a practical precaution during transit in hot conditions. See our ADHD in Mexico guide for practical steps on travelling with your medication supply.

At the airport and border

Airport security with guanfacine

Guanfacine tablets are solid-dose and not subject to liquid restrictions at airport security. National airport security authorities permit prescription medications in carry-on baggage^[4] provided they are in original packaging with a legible pharmacy label. Keep documents accessible in your carry-on so security officers can verify the medication quickly without you needing to unpack your bag.

Customs and medication import rules for Mexico

Mexico's customs authority, the Servicio de Administración Tributaria (SAT), permits travellers to import prescription medication for personal use without a prior import permit, provided the quantity is consistent with the prescribed duration. Guanfacine is not listed on any COFEPRIS controlled narcotics or psychotropics schedule^[5], so no additional customs declaration is triggered specifically by this medication. If a customs officer questions you, present your doctor's letter and original packaging together.

Keep original packaging at all times

Do not transfer guanfacine tablets into a loose pill organiser for travel. Mexican customs officers may question medication that cannot be matched to its original pharmacy label. Keeping each dose in the original blister pack or bottle with the dispensing label is the simplest way to avoid delays at the border.

While in country

Guanfacine availability in Mexico

Brands of guanfacine sold in Mexico

Brand name	Indication	Formulation	Supply note
Generic guanfacine (no confirmed Mexican brand)	Varies by prescriber	Tablet (immediate-release reported at select pharmacies)	Availability not confirmed at major chains; specialist pharmacy sourcing required

Neither Intuniv nor Tenex has a confirmed registered product listing in Mexico under the COFEPRIS medication register^[1]. Generic guanfacine may be sourced at specialist or compounding pharmacies in larger cities such as Mexico City, Guadalajara, or Monterrey, but availability is inconsistent. A local prescription from a Mexican-licensed physician is required for any in-country dispensing.

Finding a doctor who can prescribe guanfacine in Mexico

Private hospitals and clinics in Mexico City, Guadalajara, Monterrey, and Cancún employ neurologists and psychiatrists who are familiar with guanfacine. English-speaking specialists are available at several private hospital groups in these cities.

A private specialist consultation typically costs between MXN 800 and MXN 2,500 (~$40–$125 / ~€37–€115)^[6]. Telemedicine platforms operating in Mexico can issue a consultation note, but a physical prescription from a Mexican-licensed doctor is required for pharmacy dispensing. Use Nomedic's provider search to find verified specialists near your destination.

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Storing guanfacine while in Mexico

Store guanfacine tablets at controlled room temperature, ideally between 20°C and 25°C^[3]. In Mexico's hot, humid coastal destinations (Cancún, Puerto Vallarta, Los Cabos), keep medication in an air-conditioned room and away from the bathroom. If your accommodation experiences a power outage, move tablets to the coolest shaded area available and check packaging for any signs of moisture damage before the next dose.

Emergencies

What to do if something goes wrong with your guanfacine in Mexico

If your medication is lost or stolen, report it to the local police (to obtain a report number for your travel insurance claim) and contact your insurer's emergency assistance line immediately. Then visit a private clinic to obtain a local prescription for whatever generic guanfacine may be available locally.

If you run out unexpectedly, guanfacine is not a controlled substance in Mexico, which means a Mexican physician can prescribe it without special authorisation. Seek a private neurologist or psychiatrist, present your Nomedic IPS record or any documentation of your current regimen, and ask whether a compounding pharmacy can source the medication if standard pharmacies do not stock it.

“Necesito guanfacina. / Tengo una receta médica. / Por favor, llame a un médico. / ¿Dónde está la farmacia más cercana?”

I need guanfacine. / I have a medical prescription. / Please call a doctor. / Where is the nearest pharmacy?

Mexico's national emergency number is 911. For urgent medical care, ask to be taken to the nearest private hospital if your condition requires specialist attention beyond a general emergency department.

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Frequently asked questions

Is guanfacine legal in Mexico?

Yes, guanfacine is legal in Mexico. It is not on any COFEPRIS controlled narcotics or psychotropics schedule, so no import permit or medication-specific customs declaration is triggered. Mexico's SAT permits personal-use prescription medication without a prior permit provided the quantity matches your trip. Carry a doctor's letter in Spanish or with a certified translation, plus original pharmacy packaging.

Can I bring guanfacine into Mexico without an import permit?

Yes. Guanfacine is not a controlled substance under COFEPRIS schedules, so no prior import permit is required. Carry a doctor's letter, original prescription, and original pharmacy packaging to present at customs if asked.

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

A doctor's letter is not legally mandatory for guanfacine at Mexican customs, but it is the most effective way to resolve any question a customs or security officer raises. The letter should be on clinic letterhead, include the generic and brand name, dose, and travel dates, and ideally include a Spanish translation.

What if I run out of guanfacine in Mexico?

Visit a private clinic in a major city and request a consultation with a neurologist or psychiatrist. Because guanfacine is not scheduled as a controlled substance in Mexico, a Mexican physician can write a prescription without special authorisation, which you can then take to a compounding pharmacy if standard chains do not stock it.

Is guanfacine available in Mexican pharmacies?

Neither Intuniv nor Tenex is confirmed as a registered product in Mexican pharmacy chains. Generic guanfacine may be available at specialist or compounding pharmacies in major cities, but supply is unreliable. Bringing your full supply from home is strongly advisable.

Is Intuniv available in Mexico?

Intuniv (the extended-release formulation of guanfacine sold in the US, Canada, and several European countries) is not confirmed as a registered or stocked product in Mexico. If you take Intuniv, bring your full supply. A Mexican physician may be able to prescribe generic guanfacine as a clinical substitute, but the extended-release formulation may not be available locally.

Can I get a guanfacine prescription from a doctor in Mexico?

Yes. A Mexican-licensed neurologist or psychiatrist can prescribe guanfacine. Private consultations in cities such as Mexico City, Guadalajara, and Monterrey typically cost MXN 800–2,500 (~$40–$125 / ~€37–€115). A foreign prescription cannot be used directly at a Mexican pharmacy, so you need a locally issued one for any in-country dispensing.

Related practical guide

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Guanfacine in Mexico: COFEPRIS, Import Rules and Availability