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 wouldn't 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
i am constantly fatigued. i've had thyroid checked and take vitamins. i am 46. nothing seems to help. i get enough sleep. i don't know what the problem is. i get enough sleep i take my vitamins i get my thyroid checked on a regular basis. nothing helps.