Ester-C Bio - A synergistic blend of buffered Vitamin C and bioflavonoids for immune and connective tissue support.
Ester-C Bio - A synergistic blend of buffered Vitamin C and bioflavonoids for immune and connective tissue support.

Klaire Labs/SFI Health

Ester-C® Bio

$40.99

SIZE: 100 Capsules

*Free shipping applies to orders shipped within the Lower 48 States.


Free shipping on orders over $99.
SKU: KL2159 Categories: , , Tags: , , Product Brand:

The Promise

Product identity & core formulation Buffered vitamin C plus targeted bioflavonoids in a hypoallergenic capsule

Ester-C® Bio combines a non‑acidic Ester‑C® calcium L‑ascorbate base with Citrus bioflavonoids, Rutin, and patented Pycnogenol® in a vegetarian capsule.

Identity

Ester‑C® Bio by Klaire Labs/SFI Health — buffered vitamin C formula with bioflavonoid blend.

Principal ingredients & forms

Vitamin C as calcium L‑ascorbate (Ester‑C®), Citrus Bioflavonoid Complex (peel & fruit), Rutin (Sophora japonica bud extract), Pycnogenol® (Pinus pinaster bark).

Formulation & delivery

One vegetarian hydroxypropyl methylcellulose capsule per serving; contains excipients: stearic acid, microcrystalline cellulose, silicon dioxide.

Dietary & quality facts

Hypoallergenic — free of milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten; no artificial colors, flavors, or preservatives.

Why It Works

Why this formula is distinct Specific ingredient choices, amounts, and patented extracts with non‑acidic delivery

Evidence-backed component details and standardized extracts that work together as antioxidants and connective tissue support nutrients.*

01

Buffered Ester‑C® dose

Ester‑C® (calcium L‑ascorbate) 540 mg per capsule (540 mg Vitamin C; label lists 540 mg providing 600% DV).

02

Added calcium from Ester‑C®

Contains 60 mg calcium as part of calcium L‑ascorbate (listed as 60 mg, 5% DV).

03

Targeted bioflavonoid blend

Citrus Bioflavonoid Complex 50 mg plus Rutin 75 mg to complement vitamin C's antioxidant role.

04

Patented Pycnogenol® extract

Includes French Maritime Pine Extract (Pycnogenol®) 3 mg — a standardized bark extract included for synergistic antioxidant support.*

Reviews

Customer Reviews

Your Journey

How to use & safety Servings, timing, storage, and precautions

Simple capsule dosing with standard warnings—follow directions and consult healthcare professionals when indicated.

Serving

Suggested use

Take 1 capsule, 1 to 2 times daily with food or as directed by a healthcare professional.

Format & container

Dosage form and servings

Vegetarian capsule; Serving size 1 capsule; 100 capsules per container.

Warnings

Consult Before Use

If you are pregnant, nursing, have a medical condition, or taking prescription drugs, consult your physician before using this product. KEEP OUT OF REACH OF CHILDREN.

Allergy & storage considerations

Allergen-free & clean label

Free of common allergens (milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten); contains no artificial colors, flavors, or preservatives.

Product education

Ester-C® Bio: Synergistic Antioxidant and Immune Support*

Ester-C® Bio is an advanced, synergistic combination of a non-acidic, buffered form of vitamin C with a powerful blend of plant-derived bioflavonoids. These nutrients work together to support capillary strength, healthy connective tissue structure, and robust immune function. This formula is an excellent choice for individuals who wish to obtain the protective antioxidant benefits for the skin, joints, heart, and immune system in a form that is gentle on the stomach.*

How It Works: A Team of Powerful Antioxidants

This formula combines the benefits of buffered Vitamin C with a trio of potent bioflavonoids for comprehensive, full-body protection.*

Gentle, Non-Acidic Ester-C®
Ester-C® is a patented, buffered form of Vitamin C that is non-acidic and well-tolerated by sensitive stomachs. It provides powerful antioxidant support to help protect cells from free radical damage and is essential for a healthy immune system.*

A Bioflavonoid Powerhouse
This formula is enhanced with a Citrus Bioflavonoid Complex, Rutin, and the patented Pycnogenol® French maritime pine bark extract. These bioflavonoids are powerful antioxidants in their own right and work synergistically with Vitamin C to support the integrity and strength of capillaries and other connective tissues.*

  • A synergistic combination of non-acidic Vitamin C and bioflavonoids
  • Supports capillary strength and connective tissue structure*
  • Promotes a healthy and robust immune system*
  • Features Rutin and patented Pycnogenol® for enhanced antioxidant support*
  • A clean, hypoallergenic formula free of common allergens

Supplement record

Review serving details and ingredients for this product.

Supplement Facts:
Suggested Use: Take 1 capsule, 1 to 2 times daily with food or as directed by a healthcare professional.
Serving Size: 1 Capsule
Servings Per Container: 100
Ingredient Amount %DV
Vitamin C (as calcium L-ascorbate) Ester-C®‡ 540 mg 600%
Calcium (as calcium L-ascorbate) Ester-C®‡ 60 mg 5%
Citrus Bioflavonoid Complex (Citrus aurantium)(peel and fruit) 50 mg *
Rutin (sophora japonica)(Japanese pagoda tree bud extract) 75 mg *
French Maritime Pine Extract (Pinus pinaster)(bark) Pycnogenol®‡‡ 3 mg *
Other ingredients: Vegetarian capsule (hydroxypropyl methylcellulose, water), stearic acid, microcrystalline cellulose, and silicon dioxide.
*Daily Value not established.
Warning
If you are pregnant, nursing, have a medical condition, or taking prescription drugs, consult your physician before using this product. KEEP OUT OF REACH OF CHILDREN.
Allergy Information
Free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, and gluten. Contains no artificial colors, flavors, or preservatives.

Related products