But it’s also been linked to a number of side effects, including kidney and liver damage, gastrointestinal issues, cramping and dehydration. Just 30 minutes into the day, we can already tell that we’re not going to get anything productive done, let alone hit the gym. Your payment method will only be charged right before your order ships. The discount applied every time is 15% off MSRP or the current sale discount, whichever is greater. For more information, see the complete Onnit Subscription Terms & Conditions and Frequently Asked Questions.