 [ Symptoms ] i am constantly fatigued i have had thyroid checked and take vitamins i am 46 nothing seems to help i get enough sleep i do not know what the problem is i get enough sleep i take my vitamins i get my thyroid checked on a regular basis nothing helps [ Disease ] from a nutrition standpoint you still could be low in certain nutrients even with taking vitamins for example if you are low in vitamin d the amount in a multivitamin would not be enough to raise your levels to normal the best thing is to go to your doctor and get a full lab workup done i would be interested in iron folate b12 potassium and vitamin d levels but they will check everything see 10 possible reasons for being tired