What do systematic reviews say?

Vitamin E vs placebo

The review found no eligible studies for this question.

• Vitamin and mineral supplementation for preventing dementia or delaying cognitive decline in people with mild… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Vitamin E vs placebo

• Vitamin E for antipsychotic‐induced tardive dyskinesia 2018 · Cochrane Headline outcomes only
  no estimate extracted
  0 studies · 0 participants
  GRADE not reported

hAMMSC‐CM + vitamin E vs hAMMSC‐CM + vitamin C

The review found no eligible studies for this question.

• Interventions for ulceration and other skin changes caused by nerve damage in leprosy 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Antioxidant multivitamin and mineral supplement vs placebo or no treatment

• Antioxidant vitamin and mineral supplements for slowing the progression of age‐related macular degeneration 2023 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 110 participants
  Low

Vitamin E + vitamin C vs placebo

The review found no eligible studies for this question.

• Vitamin and mineral supplementation for preventing dementia or delaying cognitive decline in people with mild… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Magnesium and vitamin E co‐supplementation vs placebo

The review found no eligible studies for this question.

• Nutritional interventions for treating foot ulcers in people with diabetes 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: oral vitamin E supplementation vs placebo or no treatment

The review found no eligible studies for this question.

• Antioxidant supplementation for lung disease in cystic fibrosis 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Vitamin C vs placebo

• Vitamin C for asthma and exercise‐induced bronchoconstriction 2013 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 201 participants
  Low

Vitamin C vs placebo

The review found no eligible studies for this question.

• Vitamin C for asthma and exercise‐induced bronchoconstriction 2013 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

hAMMSC‐CM + vitamin C vs hAMMSC‐CM

The review found no eligible studies for this question.

• Interventions for ulceration and other skin changes caused by nerve damage in leprosy 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

hAMMSC‐CM + vitamin E vs hAMMSC‐CM

The review found no eligible studies for this question.

• Interventions for ulceration and other skin changes caused by nerve damage in leprosy 2019 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Oral nutritional supplements vs placebo

The review found no eligible studies for this question.

• Nutritional interventions for treating foot ulcers in people with diabetes 2020 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Vitamin K antagonist (VKA) prophylaxis vs no prophylaxis

The review found no eligible studies for this question.

• Oral anticoagulation in people with cancer who have no therapeutic or prophylactic indication for anticoagulation 2021 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Angiotensin‐converting enzyme inhibitors vs vitamin C

The review found no eligible studies for this question.

• Interventions for chronic kidney disease in people with sickle cell disease 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Oral vs intramuscular vitamin B12

The review found no eligible studies for this question.

• Oral vitamin B₁₂ versus intramuscular vitamin B₁₂ for vitamin B₁₂ deficiency 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Steroids vs vitamin D

• Topical treatments for scalp psoriasis 2016 · Cochrane Headline outcomes only
  no estimate extracted
  0 studies · 0 participants
  GRADE not reported

Lutein with or without zeaxanthin vs placebo

• Antioxidant vitamin and mineral supplements for slowing the progression of age‐related macular degeneration 2023 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 308 participants
  Moderate

Zinc vs placebo

The review found no eligible studies for this question.

• Antioxidant vitamin and mineral supplements for slowing the progression of age‐related macular degeneration 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Calcium vs placebo

The review found no eligible studies for this question.

• Calcium and vitamin D for increasing bone mineral density in premenopausal women 2023 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Beta‐carotene vs placebo

The review found no eligible studies for this question.

• Antioxidant vitamin and mineral supplements for preventing age‐related macular degeneration 2017 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found