Peppermint, a source of small amounts of menthol, is believed to work by acting on receptors in the nasal mucous membranes, leading to a reduction of nasal stuffiness. Eucalyptus oil is often used in a steam inhalation to help clear nasal and sinus congestion.
Vitamin D is essential for maintenance of bone mineralization through the regulation of calcium and phosphorus homeostasis. Vitamin D also exhibits many non-skeletal effects, particularly on the immune, endocrine, and cardiovascular systems.
10, 11, 12. Vitamin D helps the body absorb calcium, which is important for healthy teeth and bones. It also helps maintain proper blood levels of calcium and phosphorus. 10, 11, 12. Vitamin E is an antioxidant that plays a role in the formation of red blood cells.10, 11, 12. Vitamin K is required for normal coagulation of the blood. Some studies suggest that it helps maintain bone health in the elderly.itamins are either water-soluble (such as vitamin C and the B vitamins) or fat-soluble (A, D, E, and K). Water-soluble vitamins are absorbed by the intestine and carried by our blood to specific body tissues where they are needed.