Low price guarantee
Vitamart always has low prices and to give you full confidence we have a "Low Price Guarantee".
Find a lower online price at a major Canadian competitor and we will beat the price by 1¢!
To redeem: contact us with proof of the lower price (ie. website link) before or within 10 days of purchase and Vitamart will verify the price and refund you the difference.
Restrictions:
Competitor must ship from and be based in Canada. Vitamart does not offer a guarantee on all competitors, such as marketplaces. Product must be identical and in-stock. Does not apply to clearance, short-dated, out of date promotions, multiple buying discounts ie Buy X for $X, Spend $X get X Free, loyalty/member discount offers, or website typos. Vitamart reserves the right to deny any price claim and to limit quantities for any reason.
withinUs TruMarine Collagen + Magnesium, Marine Collagen with Magnesium Citrate Bisglycinate and L-Theanine, Organic Lemon, 224g
withinUs TruMarine Collagen + Magnesium, Marine Collagen with Magnesium Citrate Bisglycinate and L-Theanine, Organic Lemon, 224g
-
Sale Sold outRegular price $58.95 CADSale price $58.95 CAD Regular priceUnit price per
-
In Stock
- Notify me when the price drops
Special-order item - ships in 3-5 business days
All order items ship togetherSave money with volume discounts!
-
Buy 3+$58.95 $57.78 / each Save 2%
-
Buy 6+$58.95 $57.19 / each Save 3%
-
Buy 12+$58.95 $56.01 / each Save 5%
-
Enjoy secure payments powered by:
- Visa
- Master
- Apple pay
- Paypal
- Google pay
- Shopify pay
- American express
30-day Return Policy Learn more
withinUs TruMarine Collagen + Magnesium: marine collagen with magnesium citrate, bisglycinate and L-theanine in an organic lemon powder.

withinUs TruMarine Collagen + Magnesium, Marine Collagen with Magnesium Citrate Bisglycinate and L-Theanine, Organic Lemon, 224g
:by withinUs
If you find a lower price, we'll beat it
Quality products you can depend on
Canadian orders $79+ ship free
Not happy? Return it within 30 days
withinUs TruMarine Collagen + Magnesium Details
Marine collagen combined with two magnesium forms and L-theanine, in an organic lemon powder. 224g, one to two scoops daily, taken at night.
The sourcing is the part worth understanding. Most collagen on the market comes from bovine hide or porcine skin. withinUs uses fish scales exclusively — not skin, not bones. Scale collagen is predominantly Type I, the type that dominates skin, bone and connective tissue, and its peptides are smaller than bovine collagen's, which is the usual argument for better absorption.
The magnesium side pairs citrate with bisglycinate. Citrate is well absorbed and works out cheaper per milligram; bisglycinate is magnesium bound to glycine, gentler on the gut and less likely to cause the loose stools magnesium is known for. Blending them trades cost against tolerability rather than committing to either.
L-theanine is the amino acid found in tea leaves, associated with a calm-but-alert state. Together with the magnesium it is why the label directs taking this at night, and why it should be spaced a few hours from other medications and natural health products.
Purity's own caution names blood thinners specifically, so speak to a practitioner first if you take an anticoagulant.
Organic lemon flavour and citric acid, dissolved into hot water or herbal tea.
withinUs is a Canadian company built around TruMarine collagen, sourced exclusively from the scales of wild-caught fish rather than from hides or bones.
Who withinUs TruMarine Collagen + Magnesium Is For
This suits anyone who already takes collagen and would rather not run a separate magnesium, and anyone building an evening routine where one warm drink covers both. The lemon flavour is designed for hot water rather than a cold shake.
Contains fish — unsuitable for a fish allergy, and not vegan or vegetarian. Speak to a practitioner before use if you take blood thinners, or if you are pregnant or breastfeeding. Take it a few hours apart from other medication and natural health products, and note L-theanine may add to the effect of sedatives. Magnesium can cause digestive upset; start at one scoop.
withinUs TruMarine Collagen + Magnesium Features and Benefits
- Marine Collagen Plus Magnesium — Two supplements in one evening drink.
- Citrate and Bisglycinate — Trading cost against gut tolerability rather than committing to either.
- With L-Theanine — The amino acid from tea leaves, associated with calm alertness.
- From Wild-Caught Fish Scales — Predominantly Type I collagen, not hide or bone.
- Organic Lemon Flavour — Formulated for hot water or herbal tea.
- Take at Night — As the label directs, spaced from other medications.
- 224g — One to two scoops daily.
Frequently Asked Questions
Product Information
➕ What is withinUs TruMarine Collagen + Magnesium?
➕ How do I take it?
➕ What size is it?
➕ Why take it at night?
Benefits of Ingredients
➕ Why two magnesium forms?
➕ What does L-theanine do?
➕ Why fish scales rather than hide or bone?
Usage and Storage
➕ When should I take it?
➕ Are there any cautions?
➕ How should I store it?
Mix 1 to 2 scoops per day into 1 to 2 cups of liquid, hot water or herbal tea, and stir until fully dissolved. Take at night, a few hours before or after other medication or natural health products.
Additional Ingredients
Warnings