Platinum Vitamin D Spray from Naka is a sublingual spray safe for kids 1 year and older and adults. Vitamin D plays a number of roles in health benefits from improving the immune system to preventing heart disease. Naka’s sublingual spray has instant bioavailability helping the body absorb calcium and phosphorus. Each spray provides you with 1000IU of vitamin D, the most recommend amount by many health care practitioners. Pro D sublingual is absorbed by the blood vessels in the mouth, this is ideal for those who can not swallow or those who can not absorb the vitamin from the stomach.