For many of the Biotest supplements, the label suggests consuming on an empty stomach. I was wondering if there was a rule of thumb for how long to wait after a meal to achieve an “empty stomach”.
The specific example I had in mind was taking ZMA before bedtime. The label recommends taking on an empty stomach and to avoid calcium supplementation at the same time. In addition to the ZMA, I always have a Metabolic Drive shake as my last meal of the day before bed and I try to take the shake an hour before the ZMA to avoid the high levels of Calcium in the Metabolic Drive interfering with the ZMA.