How to treat nasal congestion and swelling from heat in Nha Trang Vietnam?

For nasal congestion before a flight, ask at any pharmacy for drops with oxymetazoline or xylometazoline — just name the active ingredient and they'll find the right product. During takeoff and landing, chew gum or simulate yawning. If you're sure it's not sinusitis, inhaling steam from a cup of hot water can also help.

For insect bites or swelling, rinse the area with lightly salted water, apply a local Tiger Balm equivalent (widely available across Vietnam), and take an antihistamine to reduce swelling.

In Nha Trang's heat, plain water alone isn't enough — sweating depletes salts and minerals. Drink electrolyte or rehydration drinks, especially when spending time outdoors. It's better to have a slight excess than to run low on electrolytes.