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NOW Supplements Vitamin A
SCIENTIFIC SCORE
Possibly Effective
Based on 16 Researches
7.7
USERS' SCORE
Good
Based on 6 Reviews
8.7
Supplement Facts
Serving Size: 1 Softgel
Amount Per Serving
%DV
Vitamin A (from Retinyl Palmitate and Fish Liver Oil)
3,000 mcg
333%

Top Medical Research Studies

9.5
Vitamin A protects against ulcers
[Lose-dose treatment with vitamin A in prevention of stress ulcer in swine].
Highly relevant to ulcer treatment
We focused on the protective effects of vitamin A on stress-induced gastric lesions in piglets after experiencing hemorrhagic shock. In our study, piglets were subjected to low blood pressure and then treated with different doses of vitamin A. Remarkably, those receiving vitamin A showed no signs of gastric lesions.

This suggests that vitamin A plays a significant role in safeguarding the gastric lining against stress-related damage during critical conditions.

Overall, our findings highlight the potential benefits of vitamin A in both veterinary and human medicine for ulcer prevention under stress.
Read More
9
Vitamin A prevents duodenal ulcers
Prevention of duodenal ulcer formation in the rat by dietary vitamin A supplementation.
High relevance to ulcer prevention
We explored the effects of dietary vitamin A on preventing duodenal ulcers in rats induced by cysteamine-HCl. In our study, we compared two groups of rats—one receiving a standard diet and the other supplemented with vitamin A.

After exposing them to cysteamine-HCl, we observed that only 32% of the vitamin A group developed ulcers, compared to 74% in the control group. This shows a significant protective effect of vitamin A on ulcer formation, although it did not influence gastric acid production.

Overall, our findings suggest vitamin A supplementation could be beneficial in reducing duodenal ulcer risk in this experimental model.
Read More
8
Beta-carotene shows ulcer benefits
[The effect of administration of beta-carotene in an oil solution on its blood serum level and antioxidant status of patients with duodenal ulcer and erosive gastritis].
High relevance to ulcer treatment
We explored the effects of daily beta-carotene treatment on patients with duodenal ulcers and erosive gastritis. After administering 18 mg of beta-carotene in an oil solution, we observed a threefold increase in its blood serum levels.

Although the concentration of retinol remained unchanged, indicating no harmful effects, the treatment showed promising results. It improved the antioxidative system, reduced pain, helped heal ulcers, and led to the healing of erosions in the gastric mucosa.
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Most Useful Reviews

9.5
Strengthened immunity
I ordered vitamin A to enhance my retina. Previously, there was a small spot in the light, but after daily intake, it diminished. My treatment lasted three months, during which I also took vitamin C. My immunity strengthened significantly, and I managed to avoid catching an ulcer during the active virus season. Quality and dosage are advantageous.
Read More
9.5
Improved mouth ulcers
It's also effective in the early stages of a cold! I am practising nutritional therapy based on the book by Dr. Tokumi Fujikawa. When I took this, my mouth ulcers improved. I believe the ingredients and quality are commendable. Postscript: A must-read for cancer patients! Dr. Kimihiko Okazaki's book, "The Miracle Cure for Cancer Has Already Been Discovered!"
Read More
7
Effective for ulcers
Cospa is good! It works on mucous membranes, so it is beneficial for mouth ulcers and sore throats.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 16 Researches
7.7
  • All Researches
9.5
Vitamin A protects against ulcers
[Lose-dose treatment with vitamin A in prevention of stress ulcer in swine].
Highly relevant to ulcer treatment
We focused on the protective effects of vitamin A on stress-induced gastric lesions in piglets after experiencing hemorrhagic shock. In our study, piglets were subjected to low blood pressure and then treated with different doses of vitamin A. Remarkably, those receiving vitamin A showed no signs of gastric lesions.

This suggests that vitamin A plays a significant role in safeguarding the gastric lining against stress-related damage during critical conditions.

Overall, our findings highlight the potential benefits of vitamin A in both veterinary and human medicine for ulcer prevention under stress.
Read More
9
Vitamin A prevents duodenal ulcers
Prevention of duodenal ulcer formation in the rat by dietary vitamin A supplementation.
High relevance to ulcer prevention
We explored the effects of dietary vitamin A on preventing duodenal ulcers in rats induced by cysteamine-HCl. In our study, we compared two groups of rats—one receiving a standard diet and the other supplemented with vitamin A.

After exposing them to cysteamine-HCl, we observed that only 32% of the vitamin A group developed ulcers, compared to 74% in the control group. This shows a significant protective effect of vitamin A on ulcer formation, although it did not influence gastric acid production.

Overall, our findings suggest vitamin A supplementation could be beneficial in reducing duodenal ulcer risk in this experimental model.
Read More
9
Vitamin A and beta-carotene prevent ulcers
Interrelationships between the gastric cytoprotective effects of vitamin A and beta-carotene and the gastric mucosal superoxide dismutase activity in rats.
High relevance to ulcer prevention
In our investigation, we examined how vitamin A and beta-carotene impact gastric ulcers in rats. By administering these compounds before inducing gastric damage with ethanol or hydrochloric acid, we observed a notable reduction in both the number and severity of ulcers.

This suggests that both vitamin A and beta-carotene help protect the stomach lining. However, while they effectively prevent ulcers, they don't fully restore the activity of a crucial enzyme involved in gastric defense. Overall, we found that these vitamins play a key protective role, primarily due to their ability to act as antioxidants.
Read More
8
Vitamin A protects against ARA-C damage
Protective effect of vitamin A on ARA-C induced intestinal damage in mice.
High relevance for gastrointestinal health
We investigated whether vitamin A could shield against intestinal damage caused by ARA-C, a common leukemia treatment known for its side effects like mucosal lesions. Mice in our study were divided into several groups, some receiving vitamin A alongside ARA-C.

Our results revealed that mice treated with vitamin A showed significantly improved gut health compared to those who did not receive it. They exhibited better mucosal integrity and less tissue damage, suggesting that vitamin A can indeed play a protective role against the harmful effects of ARA-C.
Read More
8
Vitamin A's potential role in ulcers
Prospective study of diet and the risk of duodenal ulcer in men.
Relevant dietary factors explored
We examined how diet impacts the risk of duodenal ulcers in a large group of men, tracking their health for six years.

While we found no significant effects from fat or protein intake, we discovered that higher fruit and vegetable consumption, as well as increased dietary fiber, were linked to a reduced risk of developing ulcers.

Notably, vitamin A intake was the only nutrient that showed a strong protective effect, suggesting its potential role in ulcer prevention.

However, we also acknowledged that other dietary factors might contribute to these protective associations.
Read More

User Reviews

USERS' SCORE
Good
Based on 6 Reviews
8.7
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Strengthened immunity
I ordered vitamin A to enhance my retina. Previously, there was a small spot in the light, but after daily intake, it diminished. My treatment lasted three months, during which I also took vitamin C. My immunity strengthened significantly, and I managed to avoid catching an ulcer during the active virus season. Quality and dosage are advantageous.
Read More
9.5
Improved mouth ulcers
It's also effective in the early stages of a cold! I am practising nutritional therapy based on the book by Dr. Tokumi Fujikawa. When I took this, my mouth ulcers improved. I believe the ingredients and quality are commendable. Postscript: A must-read for cancer patients! Dr. Kimihiko Okazaki's book, "The Miracle Cure for Cancer Has Already Been Discovered!"
Read More
7
Effective for ulcers
Cospa is good! It works on mucous membranes, so it is beneficial for mouth ulcers and sore throats.
9.5
Prevented mouth ulcers
My husband has become very adept at preventing mouth ulcers and can no longer suffer from them; his hay fever has improved too.
8.3
No more nosebleeds
Be cautious not to take too much! I was battling itching and a runny nose due to hay fever, along with nosebleeds. After learning that vitamin A is beneficial for mucous membranes, I began this supplement. Since then, I have hardly had any nosebleeds, and mouth ulcers are a thing of the past. I plan to keep taking it.
Read More
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