Medical Care in the US for Visitors From Mexico

Mexico is the largest source of inbound US visitors by any measure. In 2024, the National Travel and Tourism Office reported 13.4 million Mexican overnight land visitors to the US, plus air arrivals up 17.4 percent year over year.^[1] Over half of that traffic originates from five border states (Baja California, Sonora, Chihuahua, Coahuila, Nuevo Leon), and 46 percent visits California with Texas and Arizona right behind.^[1] The volume of routine cross-border medical questions is proportionally large and specific.

This guide supplements the broader pillar guide on medical care for international visitors and the general satellites, Running Out of Medication in the US and Chronic Conditions While Your Parents Visit the US, with the Mexico-specific version. The differences that actually matter are: (1) Mexican brand names do not carry over to US pharmacies, (2) the border-versus-interior distinction changes how the FDA 90-day and DEA controlled-substance rules practically apply, (3) Mexican-American diabetes prevalence is the highest among US Hispanic subgroups, and (4) Section 1557 of the Affordable Care Act gives every Spanish-speaking visitor a formal right to free qualified interpreter services at any federally-funded US hospital or clinic.

Why Your Mexican Prescription Cannot Be Filled at a US Pharmacy

A US pharmacy requires a prescription from a US-licensed clinician. The medical professional who wrote your original prescription in Tijuana, Ciudad Juarez, Nogales, Mexicali, Nuevo Progreso, Monterrey, Guadalajara, or Mexico City is not licensed in the US, so the US pharmacy cannot fill their prescription even for an identical medication. This is federal and state law.^[2]

The practical result: for stable visitors on chronic non-controlled medications, a same-day US physician-led telehealth visit produces a US prescription that can be filled at any US pharmacy. Cash-pay pricing for the visit is $50 to $150. Cash-pay pricing for generic metformin, amlodipine, losartan, atorvastatin, or levothyroxine at Costco, Walmart, CVS, Walgreens, or Rite Aid with a GoodRx or similar discount is typically $4 to $20 for a 30-day supply. That is often cheaper than the retail cash price in Mexico for the same generic made by the same Mexican manufacturer.^[6]

Mapping Common Mexican Brand Names to US Equivalents

The single highest-yield thing you can do before crossing is write your medications by their generic (International Nonproprietary Name) name, not by the Mexican brand. The CDC Yellow Book puts it plainly: use generic names because "trade names vary widely."^[10] Table 1 lists the most common chronic-condition medications prescribed in Mexico and their US equivalents.

Partial list. When in doubt, use the generic name. Any US pharmacist and clinician will recognize it. For medications not on this list, refer to the original bottle or the Cofepris (Mexican regulatory agency) label.

A few notes on gaps in this map:

• Lercadip (lercanidipine), a calcium channel blocker sold widely in Mexico and Europe, is not FDA-approved and cannot be prescribed in the US. The US substitute is typically amlodipine or nifedipine, prescribed by a US-licensed clinician.
• Combined-formulation Mexican OTC products (like Cofepris-approved combination cough or GI preparations) often do not have a single US equivalent; a US clinician will typically split them into their individual components.
• Herbal or non-pharmaceutical products sold through Mexican pharmacies are not FDA-approved and cannot be substituted; continue them under the guidance of your Mexican clinician.
• Certain sustained-release or matrix formulations from Mexican manufacturers may not have a US bioequivalent; the US clinician will substitute the closest FDA-approved formulation, which may be immediate-release or a different extended-release product.

Border Crossers vs Interior Visitors: How the Rules Practically Differ

The single distinction that matters most for Mexican visitors is whether you are a frequent border crosser (Baja California to San Diego, Tijuana to San Diego, Ciudad Juarez to El Paso, Nuevo Progreso to South Texas) or an interior US visitor (Mexico City to Los Angeles, Monterrey to Chicago, Guadalajara to Dallas). The rules are the same but the practical situation is different.

Border-crossing visitors often fill prescriptions in Mexico on their regular return trips and only need US care when something goes wrong on the US side. For this group, the primary questions are: (1) can I bring my Mexican prescription across the border for a personal-use quantity (yes, subject to FDA 90-day and DEA 50-dosage-unit limits), and (2) if I run out on the US side and cannot return home immediately, can a US clinician bridge me (yes for non-controlled medications, and increasingly for some controlled medications under specific conditions).

Interior visitors face a different question: they are typically farther from a US-Mexico border pharmacy than from a US pharmacy, so a US telehealth visit and a US pharmacy fill is usually the fastest path. The 15 US states with the highest Mexican-American population (California, Texas, Arizona, Illinois, Colorado, New Mexico, Nevada, Florida, New York, Washington, Oregon, Georgia, North Carolina, Utah, Wisconsin) all have accessible physician-led US telehealth services in English and Spanish.

The FDA and DEA rules that follow apply to both groups but at Southwest border ports they are enforced more actively.

The FDA 90-Day Rule at Southwest Border Ports

Under the FDA Personal Importation Policy, foreign nationals visiting the US may bring or ship a 90-day supply of their personal medication into the US.^[3] The FDA states: "The FDA will allow foreign nationals to bring or ship a 90-day supply of drug products," and "if the foreign national is staying longer than 90 days, they may have additional medication sent to them." The FDA definition of a foreign national is anyone who is not a US citizen or permanent resident.^[3]

Suggested documentation, per FDA guidance:^[3]

• A copy of your visa or passport (or BCC / Border Crossing Card if applicable)
• A letter from your Mexican clinician stating the diagnosis and reason for the medication
• A copy of the Mexican prescription (in English if possible; a printed Cofepris-labeled bottle is generally acceptable)

Southwest border ports (San Ysidro, Otay Mesa, Calexico, Nogales, El Paso, Laredo, Hidalgo, Brownsville) are among the most frequently used pharmaceutical import points in the US and CBP officers there are more familiar with the rule than officers at lower-volume ports. Declaring all medications at entry, keeping them in their original labeled containers, and carrying the FDA-suggested documentation dramatically reduces the risk of secondary inspection or seizure.

DEA-Controlled Mexican Brands and Non-FDA-Approved Medications

Several medications routinely prescribed in Mexico are Schedule IV controlled substances in the US, and a few are not FDA-approved at all. Bringing controlled substances into the US is governed by DEA rules, not the FDA personal-import rule.^[4] Foreign visitors may bring controlled substances into the US if:

1. The medication is in its original labeled container.
2. The label includes the drug name and schedule symbol (or pharmacy or prescription number).
3. The quantity does not exceed 50 dosage units per controlled substance for personal use.
4. The medication is declared to Customs and Border Protection at entry.

Table 2 lists the most common Mexican brands that fall into these categories.

Cannabis and CBD products manufactured outside FDA-approved US channels remain federally illegal regardless of home-country legal status. All medications must be declared to Customs and Border Protection at entry.

DEA telemedicine flexibilities extended through December 31, 2026 technically allow US clinicians to prescribe Schedule II to V controlled medications via audio-video telemedicine without a prior in-person exam, but most US telehealth companies apply stricter internal rules and decline controlled prescriptions for new-patient visitors.^[12] For visitors on any Schedule IV medication above, the practical advice is: bring your supply using the 50-dosage-unit rule, expect that if you run out unexpectedly the path is US urgent care or a walk-in clinic rather than telehealth.

What US Pharmacies Actually Cost: Often Cheaper Than Retail in Mexico

Generic prescription prices at US pharmacies with a GoodRx or similar discount card are consistently low, and for many common Mexican-brand equivalents, the US cash-pay price is comparable to or lower than the Mexican retail cash price for the same generic manufactured by the same company (Genomma Lab, Sanfer, Silanes, Farmacias Similares).^[6]

Typical 2026 US cash-pay pricing for common generics:

• Amlodipine 5 mg (Norvas equivalent): $4 to $15 for 30 days
• Metformin 500 mg (Metfor / Glucophage equivalent): $4 to $15 for 30 days
• Losartan 50 mg (Cozaar / Losacor equivalent): $5 to $15 for 30 days
• Atorvastatin 20 mg (Lipitor / Serotor equivalent): $6 to $20 for 30 days
• Levothyroxine 50 mcg (Eutirox equivalent): $5 to $20 for 30 days
• Sertraline 50 mg (Altruline equivalent): $8 to $20 for 30 days
• Omeprazole 20 mg (Losec / Inhibitron equivalent): $8 to $20 for 30 days
• Albuterol HFA inhaler (Ventolin equivalent): $25 to $65

Brand-name inhalers, injectable diabetes medications like semaglutide (Ozempic) or dulaglutide, and specialty biologics are substantially more expensive at US retail cash pricing. If you take one of these, plan the FDA 90-day supply strategy in advance or consult with your Mexican clinician about mail options.

For a broader review of what a US pharmacy can and cannot fill, see the sister satellite, Running Out of Medication in the US.

Diabetes in the Mexican-American Population: The Highest Among Hispanic Subgroups

The Mexican-American population has the highest diagnosed diabetes prevalence among US Hispanic subgroups. Per the CDC 2024 National Diabetes Statistics Report, diagnosed diabetes prevalence for 2019-2021 among Mexican or Mexican-American adults aged 18+ was 11.1 percent (95% CI 9.9-12.3), compared with 5.0 percent among South American adults and 7.3 percent among Central American adults.^[7] Including undiagnosed diabetes captured on lab testing, the age-standardized prevalence among Mexican-American adults was 20.1 percent in the National Health and Nutrition Examination Survey 2007-2010 analysis by O\'Brien and colleagues in Preventing Chronic Disease, roughly double the non-Hispanic White rate of 11.0 percent.^[8]

The clinical implications for a visiting Mexican adult, particularly an older one:

• Diabetes is more common than a US clinician may assume from the visitor's presentation; a random fingerstick or A1c at a US urgent care visit is worthwhile if the visitor is over 45 with any risk factors.
• Symptoms attributable to poorly controlled glucose (fatigue, blurred vision, frequent urination) should not be dismissed as travel-related.
• For visitors on insulin, the Mexico-to-US time-zone shift is usually small (0 to 3 hours) so insulin timing rarely needs adjustment. For a US East Coast trip from Mexico City the shift is 1 hour eastbound; for Los Angeles from Mexico City it is 2 hours westbound; neither requires the 4-percent-per-time-zone adjustment discussed in the Chronic Conditions While Your Parents Visit the US satellite.

Cardiovascular disease mortality in Hispanic adults overall was 778.5 per 100,000 in 2020 per CDC MMWR, higher than in non-Hispanic White adults (493.3) though lower than several other groups.^[13] The threshold for evaluating new chest pain, exertional shortness of breath, or unexplained fatigue in an older Mexican visitor should be the same as for any adult with metabolic risk factors: prompt evaluation, not wait-and-see.

Your Section 1557 Language Rights in US Healthcare

This is often the most underused right that Mexican visitors have when they interact with the US healthcare system.

Under Section 1557 of the Affordable Care Act, every hospital, clinic, and health program that receives federal financial assistance (which is essentially every US hospital that accepts Medicare or Medicaid) must provide qualified interpreter services free of charge to any person with limited English proficiency. The final rule was published May 6, 2024 (89 Fed. Reg. 37522), signed by Melanie Fontes Rainer, Director of the HHS Office for Civil Rights, and the language-access provisions became fully effective July 5, 2025.^[9]

What Section 1557 requires, in plain terms:^[9]

• Free of charge. You do not pay for the interpreter, and the hospital cannot bill you for language assistance.
• Qualified interpreters. A qualified interpreter is someone who is proficient in both English and Spanish, can interpret accurately and impartially, and adheres to interpreter ethics including confidentiality. It cannot be an unqualified staff member or a family member (except in narrow emergency exceptions).
• Minors cannot be used as interpreters except as a temporary measure during an imminent-threat emergency until a qualified interpreter arrives.
• Written translations. Vital documents like consent forms must be provided in the patient's primary language when reasonable.
• Posted notices. Covered entities must post notices in the top 15 languages spoken by people with limited English proficiency in their state; in California, Texas, Arizona, and New Mexico, Spanish is always among these languages.

The practical implication: if you go to a US emergency department, urgent care, or clinic and are not offered a Spanish interpreter and you would like one, you can and should ask for one. The staff member's obligation is to provide it, not yours to bring a family member.

What US Telehealth Can Bridge for a Mexican Visitor

For non-controlled chronic medications, a single physician-led US telehealth visit typically produces a same-day US prescription for a 30-day bridge supply. Many US telehealth services offer Spanish-language visits directly. Cash-pay pricing is $50 to $150; the generic medication at a US pharmacy with GoodRx or similar discount is typically $4 to $30 for a 30-day supply.

Common chronic medications a US telehealth clinician can typically bridge for a stable Mexican visitor:

• Blood pressure: amlodipine (Norvas), losartan (Cozaar, Losacor), telmisartan (Micardis), enalapril (Enaladil, Renitec).
• Thyroid: levothyroxine (Eutirox, Karet).
• Type 2 diabetes: metformin (Metfor, Dabex), sitagliptin (Januvia), empagliflozin (Jardiance), dapagliflozin.
• Statins: atorvastatin (Serotor, Ator), rosuvastatin (Provisacor).
• SSRIs: sertraline (Altruline), escitalopram, fluoxetine.
• Asthma: albuterol (Ventolin, Salbutex), budesonide/formoterol (Symbicort, identical formulation).
• GI: omeprazole (Losec, Inhibitron), pantoprazole.

When to Skip Telehealth and Go In Person

Bridge prescriptions are for stable visitors with no new symptoms. Go to a US urgent care, emergency department, or call 911 if any of the following:

• New chest pain, pressure, tightness, or exertional shortness of breath. Do not wait to see if it improves. This is a 911 call.
• New unilateral weakness, facial droop, or slurred speech: FAST protocol, 911.
• Severe headache, worst of life, or with neurological symptoms: ER.
• Signs of a heart failure exacerbation: orthopnea, ankle swelling with weight gain, dyspnea at rest.
• Uncontrolled diabetes: persistent fingerstick glucose over 250 mg/dL, symptomatic hypoglycemia, or ketones; especially important given the Mexican-American diabetes prevalence.
• Unilateral calf swelling, warmth, or tenderness after a long flight for interior visitors: same-day urgent care for DVT evaluation.
• Persistent vomiting or dehydration in an older visitor: urgent care.
• Fall with head injury or possible fracture: ER.

Under Section 1557, request a Spanish interpreter at any US urgent care or ER; the facility must provide one free of charge.^[9]

For the general framework of when to use 911 vs ER vs urgent care vs telehealth for an international visitor, see the parent guide, Medical Care for International Visitors.

Frequently Asked Questions