- 4 Pack - Features12 vitamins, antioxidants, and nutrients - The specially-formulated Bytox hangover patch replenishes the vital levels of vitamins, nutrients, and antioxidants your body loses when you consume alcohol. - May reduce the physical side effects of alcohol consumption. Bytox has zero calories and won't irritate your stomach. Directions: Apply one Bytox patch before consuming alcohol. Peel off the patch from the package and apply it to a dry and hairless area on your body. Keep the patch on for 8 hours after you've stopped consuming alcohol. In the meantime, stay hydrated. Please note that when using the patch on a regular basis, apply it to different areas on the body.