How to Choose the Right Vitamin D Supplement
Format is the first decision. Vitamin D3 capsules work well for most people and are the most widely studied form. If you want more control over your dose, a vitamin D liquid supplement lets you adjust easily — a few drops added to water or taken under the tongue. Vitamin D chewable tablets are a practical option for kids or anyone who prefers not to swallow capsules.
For bone health alongside absorption, a vitamin D and K2 combination formula is worth considering. K2 helps direct calcium toward your bones rather than your arteries — a pairing that makes sense for long-term bone and cardiovascular health. For plant-based diets, look for a vegan vitamin D supplement sourced from lichen (not lanolin, which is the animal-derived standard).
Frequently Asked Questions
Is vitamin D good for your immune system?
Research shows vitamin D plays a role in activating immune cells and has been studied for its connection to respiratory health. It's one of the most common reasons Canadians reach for a vitamin D supplement for immune support during fall and winter, when both sunlight and vitamin D levels tend to drop together.
What is the difference between vitamin D2 and D3?
Vitamin D3 (cholecalciferol) is better absorbed than D2 and is the form your skin produces from sunlight. Most supplements — including the lichen- derived vegan formulas — use D3. If a label says "vitamin D" without specifying, check the medicinal ingredients panel to confirm.
How much vitamin D should I take in Canada?
A common starting point is 1,000 to 2,000 IU daily through fall and winter. If blood work has shown a deficiency, your healthcare provider may suggest a higher therapeutic dose. Testing your levels first takes the guesswork out of it and helps you choose the right potency.
