Water

Remember to drink a lot of non-alcoholic liquids; it's easy to dehydrate in Vietnam 's hot climate. In Hanoi and Ho Chi Minh City, ice is generally fine. Chlorinated tap water should be well boiled (20 minutes to kill amoebic cysts) before drinking. In others areas, stick to bottled water and avoid ice.

Food

Vegetables should be peeled, thoroughly cleaned and preferably cooked. All meats and fish should be well cooked. To be safe, peel your own fruit. Yogurt, if refrigerated, is generally fine but avoid fresh milk and be wary of other non-sealed daily products, especially home-made ice cream. Err on the side of caution; if you're unsure, avoid it.

Malaria

Malaria is not a problem in big cities, but care should be taken in rural areas, especially in the rainy season when mosquitoes breed. if spending time in the country site (below 1,200 meters), contact a doctor about anti-malarial drugs. Try to avoid getting bitten: cover up after dark, wear repellent, burn mosquito coils and sleep under a net.

Diarrhea

This malady is common. If it occurs, maintain a diet of bland foods or fluids only. If severe, consult a physician.

Pharmacies

Many of the drugs sold in small pharmacies are copies or have expired. Stick to reputable pharmacies.