I have an autoimmune disease which often causes fatigue. I’m used to fatigue on a daily basis. Recently, I started taking some sub-lingual vitamin B-12 tablets because my latest blood work showed I was deficient. Shortage of vitamin B-12 and other vitamins in your body can cause fatigue, so I was eager to boost my levels and help relieve some of that fatigue.
Well, little did I know that after taking a full tablet of sub-lingual vitamin B-12, I would be struggling to stay awake. The connection between this drowsiness and the vitamin B-12 didn’t occur to me until the weekend. I will occasionally have coffee during the week at work to combat fatigue, but on the weekends I generally avoid caffeine and, thus, the drowsiness effects of the vitamin B-12 tablets did not go unnoticed.
I searched online for information about this interesting side effect. I didn’t find this particular side effect at WebMD or the usual health related websites. I found this information on forum discussions from other people who’d experienced this peculiar phenomenon. They called it “vitamin fatigue” and for them, it happened shortly after they took the vitamin, within 15 minutes to an hour.
Well, after finding that information, I decided to cut my dosage in half and only take it at night. So far so good. I hope this information helps someone else out and relieves day-time drowsiness you might not realize is related to your vitamin intake.
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