Skip to product information
1 of 5

Sunray® Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune, Mood, Bone & Muscle Support | 4 Capsules

Sunray® Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune, Mood, Bone & Muscle Support | 4 Capsules

Regular price $55.73 CAD
Sale price $55.73 CAD Regular price
Save % Sold out

Buy more, save more

Sunray® Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune, Mood, Bone & Muscle Support | 4 Capsules

Regular price $55.73
Sale price $55.73 Regular price
Save % Sold out
  • Ach Direct Debit
  • Amazon
  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Once-Weekly Dosing Makes Vitamin D Supplementation Simple

Forgetting daily pills is a thing of the past with Sunray® Calcifediol. This supplement provides a full week’s worth of Vitamin D in a single, convenient capsule. Since Vitamin D is stored in body fat, a higher weekly dose is just as effective as daily intakes, helping you maintain steady levels without the daily hassle. It’s a straightforward solution for busy Canadians who want reliable support for their immune system, bone health, mood, and muscle function.

How Calcifediol Differs from Standard Vitamin D3

Most Vitamin D supplements use cholecalciferol (D3), which requires conversion by the liver into the active form, 25-hydroxyvitamin D. This step can be inefficient for some people, especially those with liver concerns or certain genetic differences. Sunray uses calcifediol, which is already in its active form, so your body can put it to work right away. Clinical research indicates that calcifediol has up to three times greater bioavailability than D3, meaning faster increases in blood levels. For individuals who need quick results or have trouble absorbing standard D3, calcifediol is a smart choice.

Key Benefits of Sunray Calcifediol

  • Immune support: Vitamin D plays a key role in immune regulation, helping your body defend against seasonal threats.
  • Bone and Muscle Health: Improves calcium absorption for stronger bones and supports normal muscle function.
  • Mood and Energy: Adequate Vitamin D levels are linked to a balanced mood and steady energy throughout the day.
  • Once-Weekly Convenience: One capsule per week eliminates the need for daily reminders.
  • Fast Absorption: The active form is ready for immediate use, delivering results sooner than traditional D3.

Who Might Need Sunray Calcifediol?

Vitamin D deficiency is common, especially for people with limited sun exposure (like those in northern climates), older adults, individuals with darker skin, and those on strict vegan diets. Also, people with digestive conditions that affect fat absorption may find calcifediol easier to absorb. If you’ve been looking for a simple, effective way to support your Vitamin D levels, Sunray’s once-weekly format is a practical option.

Quality and Science Behind the Formula

Sunray is built on over 40 years of research and uses a patented formula. It’s Clean Label Certified, meaning no unnecessary additives, fillers, or artificial colours or flavours. Each batch is manufactured in facilities following strict quality control standards. This science-backed approach ensures you get a pure, potent product.

How to Use Sunray Calcifediol

Take one capsule once per week, ideally with a meal containing fat to enhance absorption. Do not exceed the recommended dose. As individual needs vary, it’s wise to check your Vitamin D levels with a health-care professional before starting any supplement regimen. This product is a natural health product and is not intended to diagnose, treat, , or prevent any disease. Always read and follow the label directions. If you are pregnant, nursing, or taking medication, consult your doctor before use. Store in a cool, dry place.

Delivery in Canada

Orders are prepared with clear Canada delivery expectations from the product page through dispatch. Delivery estimates are shown before checkout where available, and tracking details are sent after the order leaves fulfilment so customers can follow the parcel and plan around the expected arrival window.

Returns and support

Vitamin4CA offers straightforward post-purchase support with a clear returns process. Please check the store returns policy before sending an item back, as final eligibility may depend on product condition, packaging integrity and whether the return request is started within the stated return window.

How to choose

Use the product description, ingredient list, serving information and available variants to compare supplement options. Always check the full ingredient list, directions for use and any allergen information on the product packaging before taking any dietary supplement.

Ingredients and important information

Ingredient lists and formulations may vary by batch or supplier. Always check the product packaging for the most up-to-date information. Dietary supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Do not exceed the recommended daily intake. If you are pregnant, nursing, taking medication or have a medical condition, consult your healthcare professional before use.

View full details
  • Free standard deliveryUsually 2–7 business days to Canada, after 1–3 days to prepare
  • 30-day returnsOn unopened items in original packaging
  • Secure checkoutProcessed by Shopify with major cards accepted
  • Real supportEmail or phone, answered by our team

☆☆☆☆☆

Buying guide and questions

Supplement guide

Sunray® Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune, Mood, Bone & Muscle Support | 4 Capsules at Vitamin4CA

Once-Weekly Dosing Makes Vitamin D Supplementation SimpleForgetting daily pills is a thing of the past with Sunray® Calcifediol. This supplement provides a full week’s worth of Vitamin D in a single, convenient capsul...

Category Vitamin D
Delivery area Canada
Checkout Secure checkout
Brand Immunotec
Price $55.73
Availability In stock
25-Hydroxyvitamin DBone HealthCalcifediolClean LabelGluten-FreeHigh BioavailabilityImmune SupportImmunotecMood SupportMuscle Function

How to choose if this supplement fits your routine

Read the ingredient list, check the serving size and directions for use. Consider the supplement form (tablet, capsule, liquid) and whether it suits your dietary requirements. Dietary supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

Questions about Sunray® Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune, Mood, Bone & Muscle Support | 4 Capsules

Is Sunray® Calcifediol Vitamin D Supplement | Fast-Acting Once-Weekly Vitamin D | High Bioavailability 25-Hydroxyvitamin D | Immune, Mood, Bone & Muscle Support | 4 Capsules available for Canada customers?

Yes. This product is currently available on Vitamin4CA with Canada-wide delivery.

How should I compare this with similar supplements?

Compare the active ingredients, serving size, number of servings per container, supplement form, brand reputation and price per serving. Check allergen information if relevant to your dietary needs.

Where can I find delivery and returns information?

Delivery information is shown near the add to cart area. Returns guidance is available on the product page and full terms are covered in the store returns policy.