Easily absorbed directly into the bloodstream, BetterYou’s vitamin D spray delivers 3000IU of vitamin D3 in every dose, making it just as effective as vitamin D tablets but half as challenging to swallow.

It might be tempting to get the spray with the highest IU, but according to Dr. Cooperman, that's not how vitamin D works. "Companies will sell you any amount you want to take — 1,000, 2,000, 5,000, even 10,000 IU," he said. "I would stay away from taking very high levels of vitamin D. The upper tolerable intake of vitamin D is 4,000 IU, but really, if you're taking up to 1,000 IU a day, that's more than enough." That said, you should consult your doctor, who can measure your vitamin D levels and determine how much more you need, if you need a supplement at all. Whether this different absorption route is better will depend on your individual circumstances (discussed below) but it’s certainly one element that sets sprays apart from tablets. Reduced Gut AbsorptionZadka K, et al. (2018). The state of knowledge about nutrition sources of vitamin D, its role in the human body, and necessity of supplementation among parents in central Poland.

Scientific investigations on vitamin D sprays show an alternative absorption route - this time through the soft tissues of the mouth. Yes, the vitamin D can literally be absorbed into the body through your mucous membranes. Sometimes the amount of vitamin D is expressed as International Units (IU). 1 microgram of vitamin D is equal to 40 IU. So 10 micrograms of vitamin D is equal to 400 IU. Should I take a vitamin D supplement? Advice for adults and children over 4 years old You should consider taking a daily supplement containing 10 micrograms of vitamin D throughout the year. Advice for infants and young childrenOver five years old. The government advises everyone to take a 10mcg/400IU vitamin D supplement during the winter months (defined by the National Osteoporosis Society as between the end of September and the beginning of April). It is safe to take vitamin B12, vitamin D, and magnesium together. Meanwhile, taking vitamin D with a fat-containing meal can help optimize absorption. What are the best vitamin D foods?