The Thailand survival pack: what to bring, what to buy there, what to skip.

First, the star: yadom (ยาดม), the inhaler your feed keeps showing you

If your algorithm has been anywhere near Thailand content, you've seen it: the little inhaler stick that everyone from Blackpink's Lisa to half of TikTok waves around. Here's what it actually is: a pocket herbal inhaler — menthol, camphor, borneol, herbal oils — that Thais sniff for a hit of cool freshness in the heat, on long bus rides, and on queasy ferries. It's not a wellness discovery; it's an everyday item that's been in Thai pockets for generations, and that's exactly its charm.

The 20-baht truth: yadom costs about ฿20–50 ($0.60–1.50) at literally every 7-Eleven and pharmacy in Thailand. Abroad it runs $4–8 a stick. So our honest advice is the cheapest advice: put it on your land-and-buy list, not your packing list — it's a perfect first-ten-minutes purchase along with your bottle of water. If you want one for the flight over, Amazon carries the classics (Amazon link — labeled, per our rule).

Which one to buy: stick to the time-tested standards — Poy-Sian (the two-tone classic) or Jarungjit. One honest caution most listicles skip: in late 2025 Thailand's FDA recalled one Hong Thai formula ("Formula 2") over contamination, so if you're grabbing Hong Thai, make sure it's the standard line. And treat it as what it is — a nice sensory jolt, not medicine.

Plane-friendly: it's a small solid stick (the twist-open oil vial is far below liquid limits) — carry-on is fine, and on the flight home you'll be glad you have one.

Buy before you fly (the short list that's genuinely better from home)

• Your eSIM. The one thing that must work before you clear immigration. Airalo's Thailand eSIM (about $9.90 for 50GB over 10 days on their DTAC plan, or $9.50 for 3 days unlimited — checked August 2026) activates before your plane lands — you'll want Grab and Maps in the arrivals hall, not after hotel WiFi.
• Real insect repellent. Dengue is the mosquito problem that actually matters in Thailand, and the repellents that work are 20%+ picaridin or DEET — easier to find in your strength of choice at home (Amazon link). Thailand's local answer, Soffell, is solid and ฿60 — buy that too, but land with one working bottle.
• Reef-safe sunscreen. Two reasons: quality Western sunscreen is expensive in Thailand (and many local ones contain skin-whitening additives you don't want), and Thailand has banned sunscreens containing oxybenzone, octinoxate, 4-MBC and butylparaben in its marine national parks since 2021 — that includes the Similans, Koh Rok and other snorkel-trip staples, with fines on the books up to ฿100,000. Check your bottle's label (Amazon link).
• A waterproof phone pouch. The unglamorous MVP: longtail spray, sudden monsoon bursts, beach days, and if you're anywhere near Songkran (April 13–15) it is non-negotiable. A two-pack runs ~$8–10 (Amazon link).
• Motion-sickness tablets. If ferries wobble you, bring your preferred brand from home — you'll meet the Koh Tao catamaran eventually. (Thai pharmacies sell dimenhydrinate cheaply if you forget.)
• A tiny meds pouch. Imodium, your painkiller of choice, any prescriptions in original packaging. Thai pharmacies are excellent and everywhere — this is just for the 2am moment on an island when they're closed.

Buy the moment you land (cheaper and better there)

• Yadom — see above. ฿20–50, first 7-Eleven you pass.
• The Hong Thai tub — yadom, but make it herbal. Sometimes sold abroad as "yahom" (technically that name belongs to an old drinkable herbal powder — this one you sniff), the little rounded Hong Thai tub is the less clinical end of the yadom spectrum: where Poy-Sian is icy menthol precision, Hong Thai is actual dried herbs — camphor, menthol, eucalyptus, borneol and a guarded house blend — earthy and warm where the stick is sharp. It's the tub your feed keeps showing you, and it's about ฿35 at any 7-Eleven or supermarket in Thailand vs. several dollars from Amazon if you can't wait. The honest caution from above, specifically: skip Formula 2 — Thailand's FDA recalled that formula in October 2025 over mould contamination (reported unit counts vary by source; the advice doesn't) — go for Formula 1 (green or yellow) or their newer stick style, and retire a tub after a couple of months of daily sniffing.
• Royal-D electrolyte sachets. Thailand's pharmacy-staple rehydration powder — a few baht a sachet, tastes like flat orange soda, and it's what actually fixes a heat-wilted afternoon (or a Chang-flavored morning). Locals swear by it for a reason.
• Soffell. The Thai repellent in the pink and orange bottles, ~฿60 at any 7-Eleven — the daily workhorse once you're there.
• Elephant pants. The unofficial uniform of every traveler in the kingdom, ฿100–150 at any market, and honestly they're perfect: cool, temple-appropriate, and you will not resist forever. If you want to arrive pre-uniformed, Amazon has them for 4–5× the Chatuchak price — we say hold out for the market haggle, it's part of the experience.
• A sarong. ฿100 at any market; it's a temple shoulder-cover, beach towel, bus blanket and curtain in one. More useful than anything in your suitcase. (Why you'll need it: temple dress rules.)
• Tiger Balm & friends. The whole menthol universe — balms, patches, roll-ons — is a fraction of the export price in its home region. Stock up before you leave, not before you arrive.

Don't pack at all

• A power adapter (probably). Thai sockets take both flat US-style and round EU-style pins, and virtually every modern charger is dual-voltage (look for "100–240V" printed on it). UK plug users are the main exception. Every "Thailand packing list" that leads with adapters is padding.
• A pharmacy's worth of toiletries. There is a 7-Eleven every 200 meters and it sells everything in travel sizes. Pack three days' worth, buy the rest there.
• A serious rain jacket. Even in the green season, the answer is a ฿20 7-Eleven poncho and a coffee while the burst passes — a Gore-Tex shell is a sweaty backpack ornament at 32°C.
• Towels. Your accommodation has them; the beach wants your new sarong.