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Published on September 27, 2019

One of the questions we have received from our D*action participants is “Are vitamin D sprays as effective as other forms taken by mouth, such as pills and capsules?” This is a concern especially for those who have trouble swallowing pills or who have issues with digestion that make it difficult to break down and/or absorb supplements further along in their digestive tract.

Recent Research on Vitamin D Sprays

A study published this month by Williams et al. compared the response of vitamin D serum levels in participants who took 3000 IU of vitamin D per day in either capsule form or as a sublingual spray, or took a placebo. Participants were assigned evenly with 25 in each of three groups (active capsule and placebo spray, placebo capsule and active spray, or placebo capsule and spray), and serum levels were measured at 6 time points over the course of the 6-week trial. Both the capsule and spray were found to be equally effective at raising the vitamin D serum levels, and while there was an 86% compliance rate with the spray group compared to 96% in the capsule group, the spray was found to be preferred over capsules.

What Does GrassrootsHealth Data Show?

A previous analysis from the data provided by 1,161 D*action participants showed similar results with vitamin D serum level response to intake across 4 different types of vitamin D supplements – gel caps, pills, liquids and powders.

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This data supports the use of liquids and sprays as effective methods of vitamin D intake.

How are your supplements working for you?

Testing your vitamin D level regularly and taking daily steps to keep it at a target level of 40-60 ng/ml (100-150 nmol/L) is important for all stages of health. Through GrassrootsHealth Nutrient Research Institute, you can also test your omega-3 status, inflammation levels, and levels of essential nutrients and toxins. Find out your levels today! Log on to the shop (click the link below) to get your tests and see for yourself if your level can be improved.

Make sure you track your results before and after, about every 6 months!

How can I track my nutrient intake and levels over time?

To help you track your supplement use and nutrient levels, GrassrootsHealth Nutrient Research Institute has created an online tracking system called myData-myAnswers. For each specific supplement, you can track what days you take it, how much, and many other details. This will help you know your true supplemental intake and what patterns of use work for you to reach and maintain optimum nutrient levels. Check it out today!

How Can You Use this Information for YOUR Health?

Having and maintaining healthy vitamin D and other nutrient levels can help improve your health now and for your future. Measuring is the only way to make sure you are getting enough!

STEP 1 Order your at-home blood spot test kit to measure vitamin D and other nutrients of concern to you, such as omega-3s, magnesium, essential and toxic elements (zinc, copper, selenium, lead, cadmium, mercury); include hsCRP as a marker of inflammation or HbA1c for blood sugar health

STEP 2 Answer the online questionnaire as part of the GrassrootsHealth study

STEP 3 Using our educational materials and tools (such as our dose calculators), assess your results to determine if you are in your desired target range or if actions should be taken to get there

STEP 4 After 3-6 months of implementing your changes, re-test to see if you have achieved your target level(s)

Enroll in D*action and Build Your Custom Test Kit!