Do I Need Malaria Tablets for Thailand?

Short answer: most visitors to Thailand don't need malaria tablets. But the longer answer matters because getting this wrong in either direction — unnecessary tablets or skipping them when you need them — has real consequences.

Where there is no malaria risk

Bangkok, Chiang Mai, Phuket, Ko Samui, Ko Phi Phi, Krabi, Koh Lanta, Pattaya, Hua Hin, and the vast majority of tourist areas in Thailand are considered malaria-free for practical purposes. If your trip is a standard beach holiday, city break, or stays at well-known tourist destinations, you don't need antimalarial tablets.

Where malaria risk does exist

The risk areas are rural and forested zones near the borders with Myanmar (Burma) and Cambodia. Specifically, parts of Tak, Mae Hong Son, Chiang Rai, Kanchanaburi near the Myanmar border, and parts of Trat and Sa Kaeo near Cambodia. If your itinerary includes trekking in these border regions, extended stays in rural forest areas, or visiting small villages off the tourist trail in these provinces, talk to a travel clinic about whether antimalarials make sense.

What antimalarials are used for Thailand

If antimalarials are recommended for your specific itinerary, the choice matters in Thailand. There is chloroquine-resistant and mefloquine-resistant malaria in some Thai border areas. Atovaquone-proguanil (Malarone) or Doxycycline are the usual recommendations. This is a good reason to get advice from a travel clinic rather than just ordering tablets online — the right choice depends on where exactly you're going.

What you should focus on instead

Even if you don't need malaria tablets, dengue fever is a real risk throughout Thailand including cities and resorts. Dengue is spread by day-biting mosquitoes, has no vaccine widely available for most travellers, and cases have been rising. DEET-based repellent at 30–50% applied to exposed skin is your main protection. This matters more than malaria tablets for most people visiting Thailand.

Check the Thailand vaccine page for the full picture of recommended vaccines including Hepatitis A, Typhoid, and Rabies — the three that actually apply to most travellers.