Research hubs
Supplement types compared in Canada
Each hub explains what actually differs between products of that type — compound, dose per serving, format and package size — and compares every product we track against verified Canadian retailer prices.
Magnesium
Magnesium is sold in Canada in several different compounds — bisglycinate, citrate, malate, glycinate blends and oxide — as capsules, powders and liquids. The compound and the elemental magnesium per serving are what actually differ between products, and both change the price you pay per serving.
61 products tracked
Vitamin D
Vitamin D products sold in Canada are usually vitamin D3 (cholecalciferol) in drops, softgels, capsules or sprays, most commonly at 1,000 IU or 2,500 IU per serving. Some formulas combine D with vitamin K2.
4 products tracked
Omega-3
Omega-3 products differ mainly in their EPA and DHA content per serving, their source (fish, krill or algae) and their format — softgels, liquids and emulsions. Total fish oil milligrams on the front of a bottle are not the same as EPA and DHA.
6 products tracked
Protein powder
Protein powders sold in Canada include whey isolate, whey concentrate, casein and plant blends such as pea, rice and hemp. Protein per scoop, scoop size and servings per tub vary widely, which is why tub price alone tells you very little.
34 products tracked · from $35.25 · 11 verified retailer prices
Probiotics
Probiotic products list their strains and their CFU count per serving. Canadian products range from single-strain formulas to multi-strain blends, in capsules, powders, shelf-stable bottles and refrigerated formats.
4 products tracked
Collagen
Collagen products in Canada are typically hydrolysed bovine or marine peptides sold as unflavoured powders, flavoured powders or capsules, with 5–20 g per serving. Some add vitamin C or hyaluronic acid.
3 products tracked · from $34.99 · 1 verified retailer price
Iron
Iron supplements in Canada use different compounds — bisglycinate, fumarate, gluconate and heme iron — in capsules, liquids and tablets. Labels list elemental iron per serving, which is the number to compare.
4 products tracked
Electrolytes
Electrolyte products in Canada are sold as powders, sticks, tablets and ready-to-drink formats. They differ in sodium, potassium and magnesium per serving, in whether they contain added sugar or sweeteners, and in servings per package.
10 products tracked · from $34.99 · 1 verified retailer price
Ashwagandha
Ashwagandha products sold in Canada are standardised root extracts — commonly KSM-66 or Sensoril — in capsules, powders and gummies, typically 300–600 mg of extract per serving.
4 products tracked