With the arrival of the rainy season many people fall ill with bali belly. The reason for this is that most of the water used in Thailand comes from untreated wells. Every one in Thailand drinks bottled water, even the locals. Therefore when we get the first rains after the dry season. A lot of nutrients and other bad substances get washed in to the wells. As a result many visitors to Thailand (and local people as well) end up with the thai diet. It is a great diet and most notworthy you can eat anything and still loose weight. However it can put a real damper on your vacation, when you spend your holiday chasing toilets.
My travel advice to tourists visiting Thailand is to go into any Pharmacy in Thailand and purchase some Ciprofloxacin. This is a broad spectrum antibiotic that kills the bugs that cause an upset stomach. The best quality medicine comes from the larger pharmacy chains. Boots or Wattsons and are located in the larger shopping centres. That way you will have the cure on hand if you fall to bali belly. It takes about two hours to start feeling better. Within 24 hours you will be back to your good old self. The sooner you take the Ciprofloxacin the sooner you will be able to continue enjoying your holiday.