This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Use coupon code WELCOME10 for 10% off your first order.

Cart 0

Congratulations! Your order qualifies for free shipping You are $49.00 CAD away from free shipping.
Sorry, looks like we don't have enough of this product.

Pair with
Is this a gift?
Subtotal Free
View cart
Shipping, taxes, and discount codes are calculated at checkout
Science-Backed Ingredients

Our Ingredients

Every ingredient in our formulas is clinically studied, naturally sourced, and Health Canada approved. Here's what goes into Celt Naturals products — and why.

Beta-Sitosterol (Plant Sterols)

Phytosterol

Beta-sitosterol is a plant-derived sterol structurally similar to cholesterol. It competes with dietary cholesterol for absorption in the intestines, effectively blocking cholesterol uptake into the bloodstream. It is one of the most clinically studied natural compounds for cardiovascular and immune health.

How It Works

Plant sterols sit in the same absorption receptors as dietary cholesterol in the small intestine. By occupying these receptors, beta-sitosterol reduces how much cholesterol enters your bloodstream. It also modulates immune function by regulating T-helper cell activity, which can help balance overactive immune responses such as allergies.

Clinical Evidence

  • Shown to reduce LDL cholesterol by 10-15% in multiple meta-analyses
  • University of Guelph double-blind study: 15% LDL reduction, 9% HDL increase, 69% reduction in basophils, 15% reduction in IgE
  • Recognized by Health Canada, FDA, and European Food Safety Authority for cholesterol-lowering claims

Dosage in Our Products

  • Sterochol: 370 mg per capsule
  • Immuno-Care: 300 mg per capsule
  • ImmunoPet: Adapted dose for pets

L. plantarum Probiotics

Probiotic Bacteria

Lactobacillus plantarum is a species of beneficial bacteria naturally found in fermented foods. Specific strains have been clinically shown to metabolize cholesterol in the gut, converting it into a form the body cannot absorb — effectively reducing circulating cholesterol levels.

How It Works

L. plantarum strains produce bile salt hydrolase enzymes that deconjugate bile acids in the gut. This forces the liver to pull cholesterol from the bloodstream to make new bile acids, lowering overall cholesterol. They also produce short-chain fatty acids that support gut barrier integrity and reduce systemic inflammation.

Clinical Evidence

  • Studies show specific L. plantarum strains can reduce LDL by 20-35%
  • Demonstrated ability to increase HDL cholesterol by 20-30%
  • Shown to reduce Apo-B cholesterol and triglycerides
  • Supports healthy gut microbiome, reducing bloating and digestive discomfort

Dosage in Our Products

  • Sterochol: 1.2 Billion CFU (three targeted strains)
Found in: Sterochol

Ashwagandha (Withania somnifera)

Adaptogenic Herb

Ashwagandha is an adaptogenic herb used for over 3,000 years in Ayurvedic medicine. Adaptogens help the body resist physical and mental stress by regulating cortisol, the primary stress hormone. Chronic elevated cortisol is directly linked to increased cardiovascular risk.

How It Works

Ashwagandha modulates the hypothalamic-pituitary-adrenal (HPA) axis — the body's central stress response system. By normalizing cortisol output, it reduces the cascade of inflammatory and metabolic effects that chronic stress triggers, including elevated blood pressure, blood sugar, and cholesterol.

Clinical Evidence

  • Shown to reduce cortisol levels by up to 30% in clinical trials
  • Improves sleep quality, energy, and mental clarity
  • Anti-inflammatory properties complement cardiovascular support
  • Used as a potent 40:1 root extract for maximum bioavailability

Dosage in Our Products

  • Sterochol: 50 mg (40:1 extract, equivalent to 2,000 mg whole root)
Found in: Sterochol

Grape Seed Extract

Polyphenol Antioxidant

Grape seed extract is rich in oligomeric proanthocyanidins (OPCs), among the most powerful antioxidants found in nature. OPCs are 20 times more potent than Vitamin C and 50 times more potent than Vitamin E at neutralizing free radicals.

How It Works

OPCs in grape seed extract scavenge free radicals throughout the body, protecting cells from oxidative damage. They strengthen blood vessel walls, improve circulation, and reduce inflammation. They also enhance the effectiveness of other antioxidants like Vitamin C and Vitamin E by recycling them after they neutralize free radicals.

Clinical Evidence

  • Demonstrated cardiovascular protective effects in multiple studies
  • Shown to reduce blood pressure and improve blood flow
  • Anti-inflammatory properties support immune regulation
  • May help protect against UV damage and support skin health

Dosage in Our Products

  • Immuno-Care: 50 mg per capsule
  • ImmunoPet: Adapted dose for pets

Selenium

Essential Trace Mineral

Selenium is an essential trace mineral that the body cannot produce on its own. It is a critical component of selenoproteins — enzymes that protect cells from oxidative damage, regulate thyroid function, and support immune defense mechanisms.

How It Works

Selenium is incorporated into glutathione peroxidase, one of the body's most important antioxidant enzymes. This enzyme neutralizes hydrogen peroxide and lipid peroxides before they can damage cell membranes and DNA. Selenium also supports the production and activity of natural killer (NK) cells, which are critical to the immune system's first line of defense.

Clinical Evidence

  • Essential cofactor for glutathione peroxidase, a master antioxidant enzyme
  • Supports thyroid hormone metabolism and conversion
  • Studies show adequate selenium intake supports healthy immune response
  • May reduce risk of certain cancers through DNA repair mechanisms

Dosage in Our Products

  • Immuno-Care: 50 mcg per capsule
  • ImmunoPet: Adapted dose for pets

Zinc

Essential Mineral

Zinc is an essential mineral involved in over 300 enzymatic reactions in the body. It plays a central role in immune cell development, wound healing, protein synthesis, and DNA repair. The body does not store zinc, making daily intake critical.

How It Works

Zinc is required for the development and function of immune cells including neutrophils, NK cells, and T lymphocytes. It maintains the integrity of skin and mucosal membranes — the body's physical barriers against pathogens. Zinc also acts as a signaling molecule in immune cells, helping coordinate the immune response.

Clinical Evidence

  • Zinc deficiency impairs immune function and increases susceptibility to infection
  • Shown to reduce duration and severity of common cold symptoms
  • Essential for maintaining skin barrier function and wound healing
  • Supports healthy inflammatory response

Dosage in Our Products

  • Immuno-Care: 10 mg per capsule
  • ImmunoPet: Adapted dose for pets

Stem Bromelain

Proteolytic Enzyme

Stem bromelain is a proteolytic (protein-digesting) enzyme extracted from the stems of pineapple plants. It enhances the absorption of other nutrients and has natural anti-inflammatory and immune-modulating properties.

How It Works

Bromelain breaks down proteins into smaller peptides and amino acids, improving their absorption in the gut. In a multi-ingredient supplement like Immuno-Care, this means the other active ingredients are more efficiently absorbed. Bromelain also modulates the production of prostaglandins and thromboxanes, reducing inflammation and supporting healthy circulation.

Clinical Evidence

  • Enhances bioavailability of co-administered nutrients
  • Anti-inflammatory effects comparable to some NSAIDs in clinical studies
  • Supports sinus health and reduces nasal swelling
  • May help reduce exercise-induced muscle soreness

Dosage in Our Products

  • Immuno-Care: 10 mg per capsule
  • ImmunoPet: Adapted dose for pets

Flax Seed (Linum usitatissimum)

Omega-3 Rich Seed

Flax seed is one of the richest plant sources of alpha-linolenic acid (ALA), an omega-3 fatty acid. It also provides lignans — phytoestrogens with antioxidant properties — and soluble fiber that supports cardiovascular and digestive health.

How It Works

ALA omega-3 fatty acids are converted in the body to EPA and DHA, which reduce inflammation and support cell membrane health. Lignans in flax act as antioxidants, scavenging free radicals. The soluble fiber component binds to bile acids in the gut, forcing the liver to use cholesterol to produce more — effectively lowering circulating cholesterol levels.

Clinical Evidence

  • ALA omega-3s associated with reduced cardiovascular risk in large population studies
  • Lignans shown to have antioxidant and anti-inflammatory properties
  • Soluble fiber supports healthy cholesterol metabolism
  • Provides a plant-based omega-3 source suitable for vegans

Dosage in Our Products

  • Immuno-Care: 10 mg per capsule
  • ImmunoPet: Adapted dose for pets

Vitamin E (d-alpha-tocopherol)

Fat-Soluble Antioxidant

Vitamin E is a fat-soluble antioxidant that protects cell membranes from oxidative damage. As the body's primary lipid-phase antioxidant, it is especially important for protecting the fatty components of cells, including LDL cholesterol particles, from oxidation.

How It Works

Vitamin E embeds itself in cell membranes where it intercepts free radicals before they can damage the membrane's polyunsaturated fatty acids. It is particularly important for preventing the oxidation of LDL cholesterol — oxidized LDL is a key driver of atherosclerosis (arterial plaque buildup). Vitamin E also supports immune cell function, especially in older adults.

Clinical Evidence

  • Prevents LDL oxidation, a key step in atherosclerosis development
  • Supports immune function, particularly T-cell mediated immunity
  • Works synergistically with Vitamin C and selenium for enhanced antioxidant protection
  • Essential for maintaining healthy skin and eye function

Dosage in Our Products

  • Immuno-Care: 5 mg per capsule
  • ImmunoPet: Adapted dose for pets

Our Quality Promise

Every Celt Naturals product is made in Canada in a GMP-certified facility, third-party tested for quality and potency, and approved by Health Canada.

Health Canada Approved NPN licensed products
Third-Party Tested Independent lab verification
Made in Canada GMP-certified facility
Enteric Coated Maximum absorption

Ready to Try Science-Backed Natural Health?

Free shipping across North America on all orders.