Fatigue. Megaloblastic anemia due to vitamin B-12 deficiency may lead to a person feeling fatigued. Without enough red blood cells to carry oxygen around their body, a person can feel extremely tired.
Can too much vitamin B make you tired?
Too much nicotinic acid can also cause low blood pressure, fatigue, headaches, rashes, and liver damage. Excess nicotinamide. High doses of nicotinamide, another form of vitamin B-3, can cause diarrhea and increased bleeding. This can occur in doses of 500 mg per day.Apr 2, 2019
Is it better to take B12 in the morning or at night?
“Take water-soluble vitamins on an empty stomach with a glass of water,” recommends Dr. Perez-Gallardo. And since it can be energizing, Dr. Perez-Gallardo says that the best time to take vitamin B12 is in the morning, so it won't affect your sleep.Apr 26, 2021