Sisu Sisu - Ester-C 1000mg, 120 tabs
Sisu Ester-C - 1000 mg - Clinical tests have shown that Ester-C enters the blood stream and tissues 2 to 6 times faster, and is retained in the tissues 4 times longer than regular Vitamin C. Sisu Ester-C, combined with citrus bioflavonoids a powerful, easy to assimilate antioxidant. Tests have shown that bioflavonoid supplementation, in conjunction with Vitamin C may reduce allergic responses and enhance the natural secretion of insulin, benefiting those with diabetes.
Price
Regular Canadian retail price: $38.98 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 whose stomach objects to ascorbic acid, someone holding a gram of vitamin c daily, anyone who wants bioflavonoids alongside the c.
What the research supports
One tablet gives 1,000 mg of vitamin C as Ester-C calcium ascorbate, plus 200 mg of citrus bioflavonoids. The bottle lasts four months.
Absorption studies show blood levels saturate near 400 mg a day.
- Cold symptoms (evidence: moderate, from randomized controlled trial, meta-analysis)
- Vitamin C fuels the white blood cells your immune system relies on day to day. Taking 200 mg or more daily is linked to symptoms clearing modestly faster, though not to getting sick less often.
- Tiredness (evidence: strong, from randomized controlled trial, controlled feeding studies)
- Vitamin C keeps plant iron in the form your gut absorbs best, so more of what's on your plate, beans, lentils, greens, actually gets taken up. That is what prevents the fatigue a real shortfall causes.
- Skin strength (evidence: strong, from randomized controlled trial, controlled feeding studies)
- Vitamin C is a required cofactor for the enzymes that stitch collagen fibers together. Without enough, skin, gums and blood vessel walls are the first to weaken.
Read the literature: Cold symptoms on PubMed, Tiredness on PubMed, Skin strength on PubMed.
Is it right for you
Worth it if
- people whose stomach objects to ascorbic acid
- calcium ascorbate is close to neutral in pH, and that is the difference people actually notice at a gram a day.
- someone holding a gram of vitamin C daily
- one tablet covers the whole gram and the 125 mg of calcium buffers the acid load that a gram of straight ascorbic acid carries.
- anyone who wants bioflavonoids alongside the C
- 200 mg of citrus bioflavonoids is a meaningful inclusion, not the 5 or 10 mg used to justify putting the word on a label.
Look elsewhere if
- anyone whose calcium intake is already managed
- every tablet adds 125 mg of calcium. A plain ascorbic acid or sodium ascorbate product keeps your vitamin C and your calcium as two separate decisions.
- anyone told to keep oxalate intake down
- the body converts a share of any gram-level vitamin C dose into oxalate. Holding the daily amount nearer 250 to 500 mg is the usual approach in that situation.
- someone buying it because it absorbs better
- head to head trials of calcium ascorbate against plain ascorbic acid have not shown a consistent blood level advantage. Buy this for the neutral pH, or buy ascorbic acid powder at a fraction of the price per gram.
What to expect
Nothing perceptible. Vitamin C produces no felt effect at any dose. Taken right through the winter it modestly shortens how long a bug drags on, on the order of a day, without changing how often you catch one. Go past your own bowel tolerance and you will find out within a few hours, which is the only feedback this gives you.
How it compares
- Compared with plain ascorbic acid 1,000 mg tablets
- no acidity and no sour bite, plus 200 mg of citrus bioflavonoids and 125 mg of calcium in the same tablet. The tradeoff: ascorbic acid costs a small fraction as much per gram, and the faster absorption long claimed for buffered C does not hold up in direct comparisons.
- Compared with liposomal vitamin C
- far cheaper per gram and far simpler, a single tablet swallowed with breakfast rather than a measured liquid dose. The tradeoff: liposomal delivery does push blood vitamin C higher than the same milligrams in a standard tablet, which is the one thing a large single oral dose cannot do.
Product details
- Medicinal ingredients
- Rose hip (Rosa canina, fruit), Rutin (Dimorphandra mollis, fruit), Acerola (Malpighia glabra, fruit) 4:1 extract, QCE, Vitamin C (calcium ascorbate*) and 1 more
- Ingredient form
- tabs
- Strength
- 1000 mg
- Servings per container
- 120
- Suggested use
- Take 1 tablet daily 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
Take 1 tablet daily 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 tablet contains
- Rose hip (Rosa canina, fruit)
- 25 mg
- Rutin (Dimorphandra mollis, fruit)
- 25 mg
- Acerola (Malpighia glabra, fruit) 4:1 extract, QCE
- 100 mg 25 mg
- Citrus bioflavonoids (fruit/fruit peel of lemon (Citrus limon), orange (Citrus sinensis), mandarin orange (Citrus reticulata), grapefruit (Citrus paradisi), fruit peel of lime (Citrus aurantiifolia))
- 200 mg
- Vitamin C (calcium ascorbate*)
- 1000 mg
- Calcium (calcium ascorbate*)
- 125 mg
from Ester-C Brand Calcium Ascorbate
Non-medicinal ingredients
Calcium phosphate dibasic, microcrystalline cellulose, croscarmellose sodium, silicon dioxide, stearic acid (vegetable), magnesium stearate (vegetable), maltodextrin. Coating: Hypromellose, glycerin (vegetable), purified water.
Free from
Contains no dairy, wheat, gluten, or soy. 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 1000mg
- 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.