No matter how much i sleep i am constantly tired. taking vitamin b but still tired what else can i try. also i try not to sleep in the day?

See you doc: Could be something metaboloc such as thyroid or vitamin defiency or something else such as sleep apnea.Common symptoms of sleep apnea include: Loud or frequent snoring Silent pauses in breathing Choking or gasping sounds Daytime sleepiness or fatigue Unrefreshing sleep Insomnia Morning headaches Nocturia (waking during the night to go to the bathroom) Difficulty concentrating Memory loss