Last update
3/31/2026
Reviewed By
Overview
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 12 Reviews
8
Supplement Facts
Serving Size: 1 Vegetable Capsule
Amount Per Serving
%DV
Vitamin C (as Ester-C® calcium ascorbate)
500 mg
556%
Citrus Bioflavonoid Complex
25 mg
**
Acerola Extract (Malpighia glabra) (fruit)
10 mg
**
Rose Hips (fruit)
10 mg
**
Rutin
5 mg
**
Most Useful Reviews
9
Maintains adrenal health
I've been taking Ester-C for about three years now. This non-irritating form has higher bioavailability than regular vitamin C. I rely on it daily to maintain adrenal function, increasing dosage during respiratory infections for better outcomes.
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9
Supports adrenal health
Good vitamin C, in an accessible form with rosehip extract and bioflavonoids to enhance its bioavailability and mitigate possible side effects like burning and stomach discomfort. I take it alongside Thorne Stress Complex, 1 capsule twice a day, to support my adrenal glands.
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7.5
Improved absorption
18 people found this helpful
A time-release form allows for the effective intake of esterified, fat-soluble vitamin C, remaining active in the body for 24 hours. A year ago, I suffered from diarrhoea even with regular 100mg vitamin C. As vitamin C is crucial for treating adrenal gland disorder, I had given up on it due to its side effects. However, after starting with 500mg Ester-C, the slow absorption meant no diarrhoea. Unlike water-soluble C, which needs frequent dosing, Ester-C does not face that issue. I've been able to increase my intake to 1.5g of both Ester-C and regular C daily, even during pregnancy. I believe combining both forms prolongs their effects.
Read More
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User Reviews
USERS' SCORE
Good
Based on 12 Reviews
8
- All Reviews
- Positive Reviews
- Negative Reviews
9
Maintains adrenal health
I've been taking Ester-C for about three years now. This non-irritating form has higher bioavailability than regular vitamin C. I rely on it daily to maintain adrenal function, increasing dosage during respiratory infections for better outcomes.
Read More
9
Supports adrenal health
Good vitamin C, in an accessible form with rosehip extract and bioflavonoids to enhance its bioavailability and mitigate possible side effects like burning and stomach discomfort. I take it alongside Thorne Stress Complex, 1 capsule twice a day, to support my adrenal glands.
Read More
7.5
Improved absorption
18 people found this helpful
A time-release form allows for the effective intake of esterified, fat-soluble vitamin C, remaining active in the body for 24 hours. A year ago, I suffered from diarrhoea even with regular 100mg vitamin C. As vitamin C is crucial for treating adrenal gland disorder, I had given up on it due to its side effects. However, after starting with 500mg Ester-C, the slow absorption meant no diarrhoea. Unlike water-soluble C, which needs frequent dosing, Ester-C does not face that issue. I've been able to increase my intake to 1.5g of both Ester-C and regular C daily, even during pregnancy. I believe combining both forms prolongs their effects.
Read More
7.5
Ideal for recovery
2 people found this helpful
I opted for this particular brand due to its non-acidic vitamin C, which is gentle on the stomach. I combine it with chromium, licorice, and pantothenic acid to support my adrenal function during recovery from stress.
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7.5
Gentle on stomach
Fire! This vitamin C is outstanding! It doesn't irritate my stomach, and I take it consistently alongside iron to support my adrenal glands.
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Frequently Asked Questions
No FAQs are available for this product and symptom.
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