Published on December 14, 2023

The following brands are collaborating with GrassrootsHealth to offer a special discount on their products, while also giving a percentage of sales from your purchases back to us

GrassrootsHealth has been running the vitamin D*action study now for over 15 years, and throughout that time, we have often been asked what products, supplements, and brands we recommend our participants and followers use to help improve their levels of vitamin D and other nutrients, and in turn, improve their health.

We are very well aware that the quality of products and supplements MATTERS…

In order to provide just a few recommendations, we reached out to some of the companies that we have worked with in the past, who we know provide excellent, high-quality products. The Trusted Brands listed below are just a few of those that we know provide quality products, and each of the supplement companies have met specific criteria to show proven quality, absorption, strength, composition, purity, and safety.

In addition, these brands have agreed to not only give our participants a discount, but they will also support GrassrootsHealth by giving a percentage of sales from your purchases back to us, or by donating products to one of our special projects.

Shop Gift Cards HereDon’t Forget about our Special Holiday Gift Card Offer!
Purchase a gift card this December, and both you and the recipient will receive a 15% off coupon code.

Check out the following discounts available to GrassrootsHealth participants and followers – and see what might make an excellent gift to yourself or a loved one this holiday season!

Sperti Vitamin D Sunlamps

The Sperti Vitamin D Sunlamp, model D/UV-F, provides the special UVB rays needed for your body to produce Vitamin D. It is the only FDA recognized ultraviolet product for Vitamin D production in the human body, and independent studies have verified its effectiveness.

Look for our special project enrollment opportunity with Sperti!

See how the Vitamin D Sunlamp works for you!

Shop Sperti Here10% Discount on all products
Use Coupon Code GRASSROOTS


Parasol Omega-3 Fish Oils

One bottle of this high-quality omega-3 fish oil supplement contains a 3-month supply (180 softgels). Each capsule contains 400 mg of EPA and 300 mg of DHA, is made from sustainably harvested fish oil, and is processed in triglyceride form for better absorption. Formulated to increase the Omega-3 Index into a desirable range.

  • Uses a combination of non-GMO wild anchovy, sardine, and mackerel caught off the coast of Chile
  • Triglyceride form, proven to ensure better absorption
  • Advanced purification technologies to remove mercury, Lead, PCBs, Cadmium, Arsenic, and other environmental toxins
Shop Parasol Here10% Discount on all products
Use Coupon Code GRASSROOTS


RnA ReSet: Highly Absorbed Magnesium

Dr. Carolyn Dean is a medical doctor, naturopath, and author of over 35 books including best seller The Magnesium Miracle. With 40 years of experience, she offers proprietary, unique formulations that give every individual at any stage of wellness or illness the necessary building blocks for sustained health, vitality, and well-being. Their cGMP manufacturers have professional staff dedicated to the adherence of all quality standards of the FDA’s Good Manufacturing Practices which stipulate that manufacturers must evaluate the identity, purity, quality, strength, and composition of their dietary ingredients and dietary supplements to help guarantee that the products are safe and accurately labeled. Each batch of products is accompanied by a Certificate of Analysis (COA), displayed on their website’s Help page.

Look for our special MgPLUS project enrollment opportunity with RnA ReSet!

Shop RnA ReSet Here10% Discount on all products
Use Coupon Code GRH


Coromega: Emulsified & Highly Concentrated Omega-3 Squeezes

Founded in 1999, Coromega’s primary focus is to create high-quality nutritional supplements that are easy to take, enjoyable to consume, and backed by scientific research. To achieve this, Coromega uses a proprietary emulsification process to deliver supplements in a squeezable packet that offers superior absorption and convenience. With a broad range of products that includes Omega-3 supplements for adults, pets, and kids, Coromega offers something for everyone looking for a simple and effective way to support their overall wellness.

Coromega ensures that all its products are safe and effective through third-party testing, giving customers peace of mind whether they’re athletes, health enthusiasts, or just looking to improve their overall well-being.

Shop Coromega Here10% Discount on all products
Use Coupon Code GRASSROOTS10


Jigsaw Health: Magnesium, Hydration & Recovery Products

Jigsaw Health offers the highest-quality nutritional supplements with a special focus on magnesium supplements and hydration & recovery products. They use only the highest quality ingredients, each carefully researched and hand-selected to ensure the greatest potency, from the most reputable labs and manufacturers. Every batch of their products is triple-tested, and the lab results are posted online for all to see.

Their products have 13,000+ 5-star reviews, with a 90-day, no-hassle, money-back guarantee.

Shop Jigsaw Here$10 Off your order
Use Coupon Code GRH10


Alkaline for Life: Health through Proper pH Balance

At Alkaline for Life, embrace optimal health and vitality through proper pH balance and by alkalizing your body’s chemistry. This company is directed by Dr. Susan Brown, from the Center for Better Bones, who has devoted her 40+ year career to exploring promising nutritional and lifestyle pH therapies.

  • Only the highest quality hypoallergenic nutrients with no fillers, binders, or GMOs
  • Pharmaceutical grade or better with assurance that products exceed the FDA’s pharmaceutical GMP (Good Manufacturing Practices)
  • Full disclosure label. No hidden ingredients. Formulated for the most sensitive body chemistry with the focus on purity
  • Optimized bioavailability using biologically preferred ingredient forms activated by the same potent transporters used in nature and in food
  • Free from: Citrus, MSG, wheat/gluten, corn/zein/starch, dairy/casein/whey/milk derivatives, yeast, soy, sulfate, phosphates (other than co-enzymes), and preservatives
Shop Alkaline for Life Here10% Discount on all products*
Use Coupon Code GRASSROOTS10

*Save even more by joining the subscriber newsletter and rewards program when you shop on the site!

Many more options can be found through the GrassrootsHealth Wellness Center, Powered by Fullscript!


Fullscript carries only practitioner-grade supplements, and follows strict supplement quality controls to ensure all products are from reputable brands with a supply chain that helps promote better patient outcomes.  Find many more brands in the GrassrootsHealth Wellness Center on Fullscript.

Automatically receive 10% off all orders, plus free shipping on orders over $50

Shop Fullscript Here

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!

Memorial Day Sale! Save 15% off orders of $100 or more with code MEMORIAL24. Not valid on the T1D Prevention Test Kit. Sale ends 5/28/24 at 11:59pm PST.