Allergy Research Group

Esterol

Price range: $40.49 through $59.29

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The Promise

Product identity and composition Buffered vitamin C with added bioflavonoids in a vegetarian capsule

Esterol combines calcium ascorbate vitamin C with quercetin, rutin and grape seed proanthocyanidins in an HPMC capsule.

Identity

Esterol — Allergy Research Group dietary supplement; vegetarian hydroxypropyl methylcellulose (HPMC) capsule.

Principal ingredients & forms

Vitamin C as calcium ascorbate; rutin; quercetin dihydrate; grape seed extract standardized to 92% proanthocyanidins.

Formulation details

Buffered vitamin C (calcium ascorbate) combined with bioflavonoids (rutin, quercetin) and grape seed proanthocyanidins.

Dietary and quality facts

Other ingredients: hydroxypropyl methylcellulose, magnesium stearate, silicon dioxide. 50 servings per container.

Why It Works

Why these ingredients matter Specific ingredient forms, amounts, and standardization

The label lists exact ingredient forms and amounts so you know what each serving delivers.

01

Vitamin C dose & form

Vitamin C as calcium ascorbate — 1.35 g per 2‑capsule serving (1,350 mg).

02

Calcium content

Calcium (from calcium ascorbate) — 150 mg per 2‑capsule serving.

03

Bioflavonoid amounts

Rutin 100 mg and quercetin dihydrate 50 mg per 2‑capsule serving.

04

Standardized proanthocyanidins

Grape seed extract 5 mg per 2‑capsule serving, standardized to 92% proanthocyanidins.

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Your Journey

How to use Practical serving, timing, format, and practitioner note

Follow label directions or your healthcare practitioner's guidance for dosing and timing.

Serving

Two Capsules per Serving

Supplement Facts serving size: 2 capsules; Servings per container: 50.

Timing

When to take

Take 1 or 2 capsules one or two times daily between meals, or as directed by a healthcare practitioner.

Format & storage

Vegetarian HPMC Capsules

Vegetarian HPMC capsules containing powdered calcium ascorbate, flavonoids and grape seed extract.

Practitioner & dietary considerations

Practitioner direction

Use as a dietary supplement; consult your healthcare practitioner for personalized dosing or if taking medications.

Product education

Esterol by Allergy Research Group

Esterol — This dietary supplement features buffered vitamin C as calcium ascorbate, enhanced with quercetin, rutin, and proanthocyanidins from grape seed extract. These added bioflavonoids work synergistically with vitamin C, potentially offering superior absorption and retention in the body. Ester-C® vitamin C may be more readily absorbed and less rapidly excreted than other forms, supporting a wide variety of biochemical reactions including antioxidant activity, detoxification, immune system function, and collagen integrity.*

Key Benefits

  • Enhanced absorption of vitamin C*
  • Supports immune system function*
  • Promotes antioxidant activity*

How It Works / Key Ingredients

The combination of vitamin C with bioflavonoids like quercetin and rutin enhances its effectiveness, providing comprehensive support for overall health.*

How to Use

As a dietary supplement, take 1 or 2 capsules one or two times daily between meals, or as directed by a healthcare practitioner.

Supplement record

Review serving details and ingredients for this product.

Supplement Facts
Serving Size: 2 Capsules
Servings Per Container: 50
INGREDIENTSAMT%DV
Vitamin C (as Calcium Ascorbate)1.35 g1500%
Calcium (as Calcium Ascorbate)150 mg12%
- Rutin100 mg
- Quercetin Dihydrate50 mg
- Grape Seed Extract (92% Proanthocyanidins)5 mg
† Daily Value not established.
Other Ingredients: Hydroxypropyl methylcellulose, magnesium stearate, silicon dioxide.