Overview Blood sugar problems can feel very personal. You may feel fine in the morning. Then later, you may feel tired, hungry, unfocused, or moody. For many people in Ireland, unstable blood sugar can affect energy, cravings, focus, mood, and weight control. It can also lead to after-meal crashes. This can make work, family time, and simple tasks feel harder. GLYVERA is a blood sugar support supplement. It is made to support glucose balance, energy, cravings, appetite, focus, and mood stability.