I have had a couple of panic attacks recently but mostly at night and have not really slept well for the last three weeks. I bought some Natrasleep last week which have really helped me sleep. However, over the weekend I felt terrible and went to see my doctor yesterday to make sure it is not anything else. He has said that I may be diabetic or it could be anxiety exhaustion possibly brought on by too much exercise. He advised me to have a blood test and carry on with the herbal tablets if they are helping, Does anyone know if I can still take the herbal tablets the night before or will they affect the test? I forgot to ask him.