Conversation: The conversation between human and AI assistant.
[|Human|] I am tired all the time during the day, I exercise, get 6 1/2 hours to 7 of sleep a night, but someone said maybe you should try B-12. I am 56 years old, weight 138 lbs. I didn t know what type of B-12 to look for and if it is determined by your weight. I do take a multivitamin (Complete for over age 50) which does have some B-12 in it, but not knowing if that would be enough. I buy the multivitamin at Walmart.
[|AI|]  Hello ! I read your question and understand your concern. I think that we should find out the cause of your fatigue first and then try to get the proper treatment. The cause may be different like a viral infection (common for ABV) , trauma, depression, endocrine disorders, immune disorders. A vitamin deficiency may also cause these symptoms. I would recommend having a full blood work for inflammation, a vitamin B12 level, a thyroid hormone test, a kidney and liver function tests. If everything results normal it may be a chronic fatigue syn Chat Doctor.  I would recommend an antidepressant like Duloxetine or Nortriptyline for the symptoms. If any cause is found it should be treated. Hope to have been of help! Thank you for using Chat Doctor! Best wishes!