Vitamins A, C and E in gummies: the antioxidant trio and their limits
Beauty and immune gummies often combine vitamins A, C and E. Here is how much of each adults need, which forms matter, and why vitamin A is the one to total carefully.
Vitamins A, C and E are often sold together as “antioxidant” vitamins, especially in beauty gummies. They have little in common chemically. Two dissolve in fat and can build up in the body, and one dissolves in water and does not. Their limits are very different, and one of them deserves real care.
What “antioxidant” means
Normal metabolism produces unstable molecules called free radicals, which can damage cells. Antioxidants are substances that neutralize them. Vitamins C and E do this directly, and vitamin A in its carotenoid forms does too.
The idea that taking more antioxidants must therefore protect health was tested in large trials over several decades. The results were disappointing. The National Institutes of Health summarizes them this way: high-dose antioxidant supplements have not been shown to prevent disease, and in some cases they were linked to harm. Eating fruit and vegetables, which contain antioxidants alongside many other compounds, is consistently associated with better health. Supplements have not reproduced that.
That background is the reason to read these three vitamins as nutrients with a required amount, not as ingredients where more is better.
The three at a glance
| Vitamin A | Vitamin C | Vitamin E | |
|---|---|---|---|
| Recommended daily amount, men | 900 mcg RAE | 90 mg | 15 mg |
| Recommended daily amount, women | 700 mcg RAE | 75 mg | 15 mg |
| Daily Value on labels | 900 mcg | 90 mg | 15 mg |
| Upper limit | 3,000 mcg (preformed) | 2,000 mg | 1,000 mg (supplements) |
| Dissolves in | Fat | Water | Fat |
| Stored in the body | Yes, in the liver | Very little | Yes, in fat tissue |
Look at the ratio between the requirement and the limit. For vitamin C it is about twenty-two times. For vitamin E it is more than sixty. For vitamin A it is a little over three. Vitamin A is the tight one.
Vitamin A: two kinds, one of which matters more
Vitamin A is needed for vision, the immune system, reproduction and healthy skin. It comes in two forms, and labels distinguish them.
Preformed vitamin A is the active form: retinol and its esters, listed on labels as retinyl palmitate or retinyl acetate. It comes from animal foods and is what most gummies use. The body absorbs it efficiently and stores the excess in the liver, with no way to dispose of it quickly. This is the form the upper limit applies to.
Provitamin A carotenoids, mainly beta-carotene, come from orange and green plants. The body converts them into vitamin A as needed and slows the conversion when stores are full. Beta-carotene from food does not cause vitamin A toxicity. Eating a great many carrots can tint the skin yellow-orange, which is harmless.
The unit RAE, retinol activity equivalents, accounts for the difference. Older labels use IU. For preformed vitamin A, 1 IU equals 0.3 mcg RAE, so 5,000 IU is 1,500 mcg.
Vitamin A in food
- Beef liver, cooked, 3 ounces: about 6,580 mcg RAE
- Sweet potato, baked, one whole: 1,403 mcg RAE
- Spinach, boiled, half a cup: 573 mcg RAE
- Carrots, raw, half a cup: 459 mcg RAE
One serving of liver exceeds the upper limit, which is why people who eat liver regularly are advised to skip vitamin A supplements.
Why the vitamin A limit matters
- Pregnancy. High intakes of preformed vitamin A in early pregnancy can cause birth defects. The NIH advises women who are or might be pregnant not to take high-dose vitamin A supplements. This is the most important caution on this page.
- Prescription retinoids. Isotretinoin for acne and acitretin for psoriasis are related to vitamin A. Adding vitamin A supplements increases the risk of toxicity.
- Long-term high intake. Chronic excess can cause headaches, liver damage, bone and joint pain, and has been linked to lower bone density.
- Beta-carotene and smoking. Two large trials found that high-dose beta-carotene supplements increased lung cancer in smokers and former smokers. People who smoke should avoid them.
Vitamin C: the forgiving one
Vitamin C is needed to make collagen, helps the immune system work normally and improves iron absorption. Because it is water-soluble, the body keeps what it needs and passes the rest in urine. Absorption drops as the dose rises, and blood levels flatten at around 200 mg a day.
The upper limit of 2,000 mg is based on digestive upset. Reaching it from gummies would take effort. Our vitamin C guide covers this in full.
Vitamin E: natural and synthetic
Vitamin E protects fats in cell membranes from damage and plays a part in immune function. It comes in several chemical forms. The one the body uses and the one labels measure is alpha-tocopherol.
Two versions appear on labels:
- Natural: written d-alpha-tocopherol, with a “d” prefix.
- Synthetic: written dl-alpha-tocopherol, with a “dl” prefix. It is about half as active, milligram for milligram.
Current labels give vitamin E in milligrams of alpha-tocopherol with this difference already accounted for. If you see IU, 1 IU of the natural form is 0.67 mg and 1 IU of the synthetic form is 0.45 mg.
Vitamin E in food
- Wheat germ oil, 1 tablespoon: 20.3 mg
- Sunflower seeds, dry roasted, 1 ounce: 7.4 mg
- Almonds, dry roasted, 1 ounce: 6.8 mg
Vitamin E cautions
Gummies usually contain modest amounts, 5 mg to 20 mg. The cautions apply mainly to high-dose capsules of 180 mg or more, but they are worth knowing:
- Bleeding. High doses reduce the blood’s ability to clot. People taking warfarin or other anticoagulants should not take vitamin E supplements without medical advice.
- Prostate cancer. A large trial found that men taking 400 IU of synthetic vitamin E daily for several years had a higher rate of prostate cancer.
- Cancer treatment. Antioxidant supplements may interfere with chemotherapy and radiation. Ask your oncologist.
Beauty claims and what they rest on
Gummies that combine these three usually carry claims about skin. Here is what each claim refers to:
- “Promotes collagen formation” refers to vitamin C, which the body needs to build collagen.
- “Supports skin health” refers to vitamin A’s role in maintaining skin and vitamin C’s in collagen.
- “Antioxidant support” refers to vitamins C and E.
These describe what the vitamins do when you have enough. They do not mean that amounts above your requirement improve your skin. No trial has shown that a gummy at these doses changes the skin of a well-nourished adult.
Adding up vitamin A across products
| Product, taken as directed | Preformed vitamin A per day |
|---|---|
| A beauty gummy with 250 mcg each, four a day | 1,000 mcg |
| A greens gummy with 113 mcg each, four a day | 452 mcg |
| A multivitamin | 450 to 900 mcg |
| Total | About 1,900 to 2,350 mcg |
Three everyday products reach two thirds to three quarters of the upper limit before food is counted. Add fortified cereal, dairy and the occasional serving of liver, and the total can exceed it.
How to read the label
- Find vitamin A and its form. Retinyl palmitate or acetate is preformed. Beta-carotene is not.
- Multiply by gummies per day and add vitamin A from every other product.
- Keep preformed vitamin A from supplements comfortably under 3,000 mcg, and avoid it altogether in pregnancy unless your doctor advises otherwise.
- Check vitamin E’s form if you take blood thinners.
- Treat vitamin C above about 200 mg as surplus.
- Count the sugar.
Gummies with these vitamins that we have reviewed
Goli Superfruits Beauty supplies 1,000 mcg of vitamin A, 360 mg of vitamin C and 20 mg of vitamin E a day as directed. Goli Supergreens supplies 452 mcg of vitamin A. See our comparison of the two.
Common questions
Is it safe to take vitamins A, C and E together?
At amounts near the Daily Value, yes for most adults. The one to watch is preformed vitamin A, which builds up in the body.
Can I take vitamin A while pregnant?
Do not take vitamin A supplements in pregnancy without your doctor’s advice. High intakes of preformed vitamin A can cause birth defects.
What is the difference between retinyl palmitate and beta-carotene?
Retinyl palmitate is preformed vitamin A and counts toward the upper limit. Beta-carotene is converted to vitamin A as needed and does not cause vitamin A toxicity.
Is natural vitamin E better than synthetic?
Natural d-alpha-tocopherol is about twice as active per milligram as synthetic dl-alpha-tocopherol. Labels in milligrams of alpha-tocopherol already account for this.
Do antioxidant gummies prevent disease?
Large trials of high-dose antioxidant supplements have not shown that they prevent disease, according to the NIH.
How do I convert vitamin A from IU to mcg?
For preformed vitamin A, multiply IU by 0.3. So 5,000 IU is 1,500 mcg RAE.
Sources
- NIH Office of Dietary Supplements. Vitamin A and carotenoids: fact sheet for health professionals.
- NIH Office of Dietary Supplements. Vitamin C: fact sheet for health professionals.
- NIH Office of Dietary Supplements. Vitamin E: fact sheet for health professionals.
- NIH National Center for Complementary and Integrative Health. Antioxidant supplements: what you need to know.
These statements have not been evaluated by the Food and Drug Administration. Products discussed here are not intended to diagnose, treat, cure or prevent any disease. This page is not medical advice.