Once an order is placed on iHerb.com, it is typically processed quite quickly. Therefore, the possibility of canceling or changing an order depends on the timing of the request. If the order has not yet been processed or shipped, it may be possible to cancel it. However, once it is in the shipping process, changes cannot be made. If you would like to attempt to cancel or modify your order, it is advised to act promptly. Users can usually find options to manage their orders on the website. For detailed instructions and possible next steps, one should refer to the current web page for specific information. This will ensure that you have the most accurate guidance regarding your order.