B12 is available in all forms of animal origin. Vitamin B6 is important in amino acid metabolism and protein synthesis. There is also a possibility that B6 helps reduce severe nausea and vomiting. Studies have shown a reduction in those symptoms when women were given B6 supplements. Sources are liver, meats, cabbage, bananas, eggs, corn, whole wheat, fish and rolled oats.
Vitamin D helps maintain calcium balance.
Vitamins A, C, E and K help preserve structural and functional properties of cells. Vitamin E is found in vegetable oils, nuts, seeds, and whole grains. Vitamin C is found in citrus fruits, berries, and green vegetables. The form of vitamin A you want to watch levels of is retinol. The drug containing retinol taken orally to fight acne was found to produce birth defects.