Pharmacies in Mexico City: How to Ask for What You Need

Pharmacies in Mexico work a little differently than what most US visitors are used to, and once you know the pattern it’s genuinely convenient.

How pharmacies here are different

Major chains — Farmacias del Ahorro, Farmacia Guadalajara, Farmacias Similares — are everywhere, many open late or 24 hours, and pharmacists are used to being a first line of medical advice for minor issues. A lot of medications that require a prescription in the US are available over the counter here, and pharmacists can often recommend something appropriate if you describe your symptoms.

What to bring from home: the generic (not brand) name of any medication you take regularly, since brand names differ by country.

Useful phrases

The traveler’s holy trinity: diarrhea, nausea, heartburn

Changes in diet, water, and food prep are the usual culprits, not “the water” specifically — CDMX tap water isn’t recommended for drinking, but ice and food prep at reputable places is generally fine. Still, stomach upsets happen to a lot of first-time visitors in the first few days.

• Diarrhea: Electrolyte packets/drinks (widely available — look for Electrolit or suero oral at any pharmacy or convenience store) matter more than anti-diarrheal medication for how you’ll feel. Loperamide (Imodium) is available over the counter if you need to be functional for a travel day.
• Nausea: Ask a pharmacist for something OTC — there are effective options available without a prescription here that may require one at home.
• Heartburn/acidez: Very common given richer food and later meals than a lot of visitors are used to. Standard antacids are widely available; ask for something “para la acidez.”

When it’s more than a stomach bug

If symptoms are severe, include fever, or last more than a couple of days, that’s a clinic or doctor visit, not a pharmacy conversation — see what to do if you get sick for how to find English-speaking care.