07 Jun 2018 --- The US Food and Drug Administration (FDA) has issued warning letters to the parties responsible for liquidcaffeine.com and Dual Health Body and Mind for illegally selling certain highly concentrated caffeine products. The FDA considers these products to be a threat to public health. The recipients of the warning letters have 15 days to notify the agency about how they have addressed the violations and will prevent them from recurring. If the companies fail to promptly correct these violations, the FDA announced it may take additional action, such as seizure and/or injunction.