anxiety
"After a run of horrific life experiences, I had terrible panic attacks and went to hospital emergency several time thinking I was having a heart attack. Interestingly, I started on 15mg and could hardly wake during the day, missed meetings and appointments as I'd sleep through them.  My doctor told me that paradoxically, the drowsiness tends to stop at a higher dose.  I started 30mg and almost immediately my energy in the morning came back.  I haven't had any panic attacks and have achieved more in the last 6 months than I had the 3 years prior.   I'm laughing and enjoying life. If you feel tired and low in energy on the low dose, then ask your doctor about a higher dose.  Don't give up on this. This medicine has given me my life back."