The doctor standing next to the till
Next to the till in many discount pharmacies there is a small door with a white coat behind it. This is the adjoining consultorio, a Mexican arrangement that has existed for years and that handles, with no appointment and no paperwork, most of what happens to a traveller: a throat infection, diarrhoea that will not settle, a sprained ankle, swimmer's ear. You walk in, wait twenty minutes on a plastic chair, and a qualified doctor listens, examines you and writes a prescription. The consultation usually costs between $2 and $5 USD (2025), sometimes less depending on the chain.
It is not luxury medicine and does not pretend to be. The consultorio runs no complicated tests, has no operating theatre and is no use for a serious emergency, but for the usual catalogue of travel complaints it works better than improvising with the medicine cabinet from home. The doctor writes a prescription you fill at the counter next door, and consultation plus medication rarely comes to more than $15 or $20 USD (2025). It helps to have written down the generic name of anything you take regularly, because brand names change from country to country and the active ingredient does not.
What is over the counter and what is not
The Mexican counter sells rather more without a prescription than a European expects, and rather less than people imagine who have heard you can buy anything here. Painkillers, anti-inflammatories, antihistamines, oral rehydration salts, antacids, after-sun creams and repellent sit in plain view and cost little: almost none of it goes beyond $3 to $12 USD (2025). Antibiotics, by contrast, have required a prescription since a health reform more than a decade ago, and the pharmacy keeps a copy of it. Which is exactly why the consultorio next door makes such practical sense.
Two categories are worth understanding before you need them. The first is generics: in Mexico they are sold under each chain's own brand names with the active ingredient printed underneath, so reading the box tells you what you are taking. The second is controlled medication, which includes sedatives, sleeping pills and some strong painkillers; there the prescription has to be specific and no serious pharmacy skips it. Anyone travelling with long-term medication should bring it from home in its original packaging, with the prescription, and not count on finding the same brand here.
Sun and dehydration, the actual danger
What ruins a trip to Mexico is usually not the food or any dramatic incident, but the sun and the lack of water. On the coast the ultraviolet index stays high nearly all year, and one shadeless morning among ruins is enough for a serious burn; on the high plateau the altitude deceives you, because the air feels cool while the radiation hits harder than at sea level. The classic combination is walking four hours around Teotihuacán with half a bottle of water and returning to the hotel with a headache, nausea and skin that stings.
Prevention is dull and it works. A wide-brimmed hat, sunscreen applied before leaving and repeated mid-morning, long sleeves at archaeological sites, and the gap between one and four in the afternoon set aside for eating, sleeping or being under a roof. Bottled water costs less than a dollar at any OXXO, and the oral rehydration sachets sold in every pharmacy fix in one afternoon what two litres of plain water will not. If confusion, vomiting or hot dry skin appear, that is heatstroke rather than tiredness, and it needs a doctor rather than a nap.
The chains, a permanent fixture
Pharmacies are a permanent fixture of the Mexican street, as constant as OXXO. Farmacias Similares, Farmacias del Ahorro, Farmacias Guadalajara and Benavides have branches in almost any mid-sized city, many open late and some around the clock in central districts. Several of them include the adjoining consultorio, and the larger chains also sell toiletries, nappies, water and basic food, which means they solve at eleven at night the sort of thing that in another country would mean waiting until morning. Prices are marked on the shelf and are not haggled over the way market prices are.
The difference between chains is mostly price and range rather than safety. The discount ones work with their own generics and come out cheaper; the bigger ones carry a wider catalogue and often have someone who speaks English in tourist areas. In small towns there are independent pharmacies that work perfectly well, though they close mid-afternoon and on Sundays. It is worth locating the nearest one on your first day, particularly if you are travelling with children or with a chronic condition, because hunting for an open pharmacy at two in the morning in a mountain village is an avoidable experience.
Travel insurance and private hospitals
It is worth being blunt: Mexico offers no free public care to foreign tourists beyond life-threatening emergencies, and the private system, which is where almost everyone ends up, runs on money up front. A private hospital in a large city normally asks for a card as a guarantee before admitting you, and a specialist consultation usually falls somewhere between $30 and $70 USD (2025). An emergency involving scans, an operating theatre or a few nights on a ward is a completely different scale, with bills in the thousands that nobody improvises from a phone at three in the morning.
Travel insurance, then, is not an optional extra but the piece holding everything else up. A reasonable two-week policy usually costs between $40 and $120 USD (2025) depending on age and cover, which is trivial against the price of a medical evacuation. Check three things before buying: whether it covers activities like diving or riding a motorbike, whether it pays the hospital directly or expects you to pay and claim later, and whether there is an assistance line in Spanish. Save the policy document on your phone rather than only in your inbox; it saves half an hour of panic.
The mistakes people keep making
The most common mistake is bringing a full medicine kit from home and not bringing the prescription for whatever you take daily. The first can be bought here in ten minutes and for less money; the second cannot be obtained at all if the drug is a controlled one. The second mistake is treating any stomach upset with antibiotics bought on guesswork, when most episodes settle with rehydration salts, rice, patience and a quiet day. The third, and the expensive one, is travelling uninsured on the assumption that a cheap country also has cheap emergency rooms.
There is also a timing mistake repeated at every archaeological site in the country. People arrive at eleven, because that is when the bus drops them, and walk under vertical sun until two. Starting at eight, leaving at eleven and going back to the hotel for lunch changes the whole day and avoids half the doctor's visits. The same applies on the high plateau: landing in Mexico City and drinking three mezcales on the first night, at over two thousand two hundred metres, produces a hangover that people routinely mistake for altitude sickness.
What people always ask
Six concrete questions about health in Mexico, answered plainly and without promising anything no traveller can count on. They run from the everyday, meaning where to buy a box of ibuprofen on a Sunday, to the thing nobody wants to think about before leaving home, meaning what happens if you have to be admitted to a private hospital a thousand kilometres from your embassy. The last question is always the same one and deserves a short answer: yes, bottled water, and no, you do not need to arrive with a suitcase full of medication.
One general idea does not fit in a table row. Health on a Mexican trip is decided almost entirely by boring decisions: sleeping enough, drinking water all day, eating where local people queue, staying out of the midday sun and not stringing four long nights together. The health system here is perfectly capable of fixing whatever breaks, and the pharmacy consultorio makes that both cheap and quick. What it cannot do is give back the three days of holiday it takes to recover from sunstroke, which is the injury travellers actually collect.