Sisu Sisu - Ester-C 500mg - Wildberry, 90 chew
Sisu Ester-C 500 mg - Wildberry - A patented, non-acidic form of Vitamin C, developed by binding ascorbic acid with a mineral molecule. Ester C enters the blood stream 2 - 6 times faster than regular Vitamin C and cells retain the benefits up to 4 times longer. Vitamin C is a well-known, powerful antioxidant, available through diet or supplementation, essential for boosting immune functions, balancing cholesterol, assisting the absorption of iron, and necessary for the maintenance of healthy bones, teeth, gums, skin and blood vessels. Naturally sweetened and gentle on tooth enamel.
Price
Regular Canadian retail price: $22.98 CAD. Price Vault members pay below retail on this product. Member pricing is private and shown after a free opt-in, with no membership fee, no minimum order and no subscription.
In stock. Free shipping across Canada on orders over $89, flat $9.95 under that. 30 days to request a return, with return shipping paid by the customer. Ships from Victoria, BC.
Why people keep reordering it
- Year-round defense
- Daily support for a resilient immune response.
- Antioxidant support
- Helps protect cells from everyday oxidative stress.
- Tradition meets research
- Time-tested ingredients in clinically informed doses.
Best suited to: people who cannot swallow pills but hate sour chews, adults holding one dose a day all winter, households avoiding artificial sweeteners and colours.
What the research supports
Each chewable is 500 mg of vitamin C as Ester-C calcium ascorbate, near pH-neutral rather than sour. At one a day, the bottle of 90 lasts three months.
Studies use 200 mg or more a day.
- Symptom duration (evidence: moderate, from randomized controlled trial, meta-analysis)
- Vitamin C taken regularly at 200 mg or more shortens how long seasonal symptoms last in pooled adult trials, though it does not reduce how often people fall ill.
- Iron absorption (evidence: strong, from randomized controlled trial, controlled feeding studies)
- Vitamin C taken with a meal converts plant iron into the form your gut absorbs, multiplying how much iron that meal actually delivers into your bloodstream.
- Stomach comfort (evidence: mixed, from randomized controlled trial, crossover trial)
- Calcium ascorbate sits near neutral pH instead of the sharp acidity of plain ascorbic acid, which is gentler on the stomach lining, though controlled trials show similar blood levels between the two forms.
Read the literature: Symptom duration on PubMed, Iron absorption on PubMed, Stomach comfort on PubMed.
Is it right for you
Worth it if
- people who cannot swallow pills but hate sour chews
- the buffered ascorbate salts are near neutral, so a 500 mg tablet chews like a berry tablet rather than like citric acid.
- adults holding one dose a day all winter
- at one tablet daily, 90 tablets covers a full three month stretch without reordering.
- households avoiding artificial sweeteners and colours
- the sweetness is stevia leaf plus fruit sugars, the flavour is raspberry and black raspberry, and there is no colouring agent in it.
Look elsewhere if
- anyone with fragile teeth chewing these daily
- the ascorbate is neutral but the citric acid and fruit sugars in the tablet are not. A swallowed capsule or a powder in water at mealtime removes the contact time entirely.
- someone who wants a gram in one go
- that is two tablets here. A single 1,000 mg buffered tablet is one swallow and costs less per gram.
- anyone hoping for a noticeable lift
- vitamin C is not stimulating and never feels like anything. If low energy is the problem, iron status and vitamin D are the two things actually worth checking.
What to expect
Nothing you will notice, at any point. Steady daily use through the winter shortens how long a bug lasts by around a day and does not change how often you get one. The only fast feedback is digestive: go well past a gram at once and you will know.
How it compares
- Compared with an ascorbic acid chewable
- no acid bite and no acid sitting on enamel, because the vitamin C here is a mineral salt rather than the acid itself. The tradeoff: ascorbic acid costs several times less per gram, and the absorption edge often claimed for buffered forms does not appear when the two are tested against each other.
- Compared with vitamin C powder in water
- an exact 500 mg per tablet, portable, with nothing to measure and nothing to mix. The tradeoff: a powder swallowed in water spends no time against your teeth at all, and per gram it is far cheaper.
Product details
- Medicinal ingredients
- Vitamin C, (from Ester-C Brand calcium ascorbate and sodium ascorbate), Calcium (calcium ascorbate)
- Ingredient form
- chew
- Strength
- 500 mg
- Servings per container
- 90
- Suggested use
- Adults: Chew 1-3 tablets per day, or as directed by your health practitioner. Children (4 and up): Chew 1 tablet a day or as directed by a health care practitioner. Take with food.
- Country of manufacture
- Canada
- Independent testing
- independent third-party labs
- Certifications
- Non-GMO, Made in Canada
- Storage
- Store in a cool, dry place
- Brand
- Sisu
How to take it
Adults: Chew 1-3 tablets per day, or as directed by your health practitioner. Children (4 and up): Chew 1 tablet a day or as directed by a health care practitioner. Take with food.
- Store in a cool, dry place away from direct light.
- Keep out of reach of children.
- Consult a practitioner if you are pregnant, nursing or on medication.
Ingredients
Each chewable tablet contains
- Vitamin C
- 500 mg
- (from Ester-C Brand calcium ascorbate and sodium ascorbate)
- Calcium (calcium ascorbate)
- 22.5 mg
Non-medicinal ingredients
Stevia rebaudiana leaf, dextrose, D-fructose, citric acid, natural flavours (black raspberry, raspberry), guar gum, stearic acid (vegetable), magnesium stearate (vegetable), silicon dioxide.
Free from
Contains no dairy, wheat, gluten, artificial flavours, artificial sweeteners or colours. Suitable for a vegan diet
Interactions and cautions
- Medications
- Some immune botanicals may interact with immunosuppressant medication. Review with your practitioner.
- Timing
- Separate from medications by 2 to 4 hours unless directed otherwise by a healthcare practitioner.
- Pregnancy and breastfeeding
- Consult a healthcare practitioner before use if pregnant or breastfeeding.
- General
- Use only as directed. Discontinue and consult a practitioner if you experience an adverse reaction.
This product is not intended to diagnose, treat, cure or prevent disease. Consult a healthcare practitioner before use. Free certified advisors are available at 1-888-386-1211, Mon to Fri, 9am to 5pm PT.
Questions about Sisu - Ester-C 500mg - Wildberry
- Is this the genuine, authentic product?
- Yes. It is identical to what you would pay full price for anywhere else, sourced through our authorized supplier relationships.
- How is the price below retail?
- We buy direct, with nobody in the middle taking a cut, and we sell it for close to what we paid. You see the price privately because you have unlocked the Vault.
- How fast does it ship?
- Orders placed before 12pm PT are processed the same day and ship within two business days. Shipping is free over $89, and a flat $9.95 under that.
- Can I return it?
- You have 30 days after it arrives to request a return. Product must be unused, in its original packaging, with proof of purchase, and return shipping is paid by you. Find it cheaper anywhere in Canada and we will match the price.