The health and performance benefits of vitamin D are now widely accepted. But did you know that the most recent research has confirmed the need for a larger dose of this essential, life-giving nutrient than previously thought?

Several new studies support what we’ve known (and have been telling you) all along. Despite what your well-intentioned but uninformed doctor or nutritionist might say, the human body requires at least 4,000 to 8,000 units of vitamin D for optimum health and performance—per day. But don't just run out and take this amount of vitamin D without knowing something about the product you're going to use.

Unfortunately, many vitamin D supplements are not reliably-absorbed and do not work well, even when taken at the correct dose. Because vitamin D is a fat soluble nutrient, its absorption rate is dependent on a number of variables, including the time it’s taken (best with a meal that contains an adequate amount of fat). Every individual's personal absorption capacity (which can be greatly affected by nutritional deficiencies and genetic variances) and the specific formulation of the product itself (tablets and gel caps that feature fillers, excipients and low-quality oils simply don't work) will further influence the rate at which your serum levels of vitamin D can or will be restored.

The secret's in the size!

Hundreds of studies confirm that a reduction in the particle size of any nutrient will increase its absorption rate. The FDA requires vitamin manufacturers to show only that their tablets or capsules break apart; there is currently no standard limiting the size of a nutrient particle being formulated and sold as a supplement. When nutrient particles are too large, they simply cannot penetrate the cells. Products that feature smaller, "nano-sized" particles, on the other hand, are far more effective. The Bioletics Vitamin D Nanospray, for example, provides thousands of natural, nutrient molecules sized to directly enter the tissues and cells--right where they're needed with no digestive process to get in the way.

Hundreds of athletes have used the Bioletics patented NanoSpray formula to restore their vitamin D3 to an optimal level (55 to 75ng/ml). In addition to its effectiveness, reliability and ease of use, this highly-effective and affordable product features:

• Flexible, pre-metered dosing (1000 IU of Vitamin D3 are delivered with each spray)

• A refreshing spearmint taste

• No artificial flavors, colors, or preservatives

• No sugar, starch, corn, wheat, soy, gluten, egg, salt or dairy

• 10,000 Class Clean Room manufacturing purity

While sublingual vitamin D sprays are more difficult to find (the are generally not sold in retail stores), you can order the most effective nano spray supplement available here: http://bioletics.com/content/vitamin-d3-nanospray