All of iHerb’s U.S. fulfillment centers are GMP registered by NSF. iHerb processes the majority of our orders going to Japan, Hong Kong, and Singapore from our South Korea and Hong Kong warehouses. Products at these two warehouses are fulfilled directly from our main hub in California.

All iHerb distribution centers are kept in a cool, climate-controlled environment of 74-75 degrees Fahrenheit (23-24 degrees Celsius) and have large walk-in refrigeration units for items that require regulated temperatures.