3. Effect of vitamin A supplementation in women of reproductive age on maternal survival in Ghana (ObaapaVitA): a cluster-randomised, placebo-controlled trial.
Kirkwood Betty R (2010) · Lancet (London, England) · n=484
Randomized Controlled Trial View details
4. Vitamin A supplementation for postpartum women.
Oliveira Julicristie M (2016) · The Cochrane database of systematic reviews · n=25758
Meta-analysis View details
5. Dietary vitamin and carotenoid intake and risk of age-related cataract.
Jiang Hong (2019) · The American journal of clinical nutrition
Meta-analysis View details
6. Vitamin A supplementation coverage and associated factors among Ethiopian children under five years: a systematic review and meta-analysis.
Yirdaw Berhanu Wale (2025) · BMC pediatrics
Meta-analysis View details
7. Antioxidant vitamin and mineral supplements for slowing the progression of age-related macular degeneration.
Evans Jennifer R (2017) · The Cochrane database of systematic reviews · n=7
Meta-analysis View details
8. Micronutrient Status and Dietary Intake of Iron, Vitamin A, Iodine, Folate and Zinc in Women of Reproductive Age and Pregnant Women in Ethiopia, Kenya, Nigeria and South Africa: A Systematic Review of Data from 2005 to 2015.
Harika Rajwinder (2017) · Nutrients
Systematic Review View details
9. Dietary β-Carotene, Vitamin A, and Retinol Intake and Prevalence of Colorectal Adenoma: A Cross-Sectional Study and Meta-Analysis.
Chung Joowon (2025) · Gut and liver
Meta-analysis View details
10. Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life.
Rutjes Anne Ws (2018) · The Cochrane database of systematic reviews · n=83000
Meta-analysis View details
11. Vitamin and Mineral Supplementation During Pregnancy on Maternal, Birth, Child Health and Development Outcomes in Low- and Middle-Income Countries: A Systematic Review and Meta-Analysis.
Oh Christina (2020) · Nutrients · n=451723
Meta-analysis View details
12. Maternal B-vitamin and vitamin D status before, during, and after pregnancy and the influence of supplementation preconception and during pregnancy: Prespecified secondary analysis of the NiPPeR double-blind randomized controlled trial.
Godfrey Keith M (2023) · PLoS medicine · n=859
Randomized Controlled Trial View details
13. The effect of adding zinc to vitamin A on IGF-1, bone age and linear growth in stunted children.
Adriani Merryana (2014) · Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) · n=12
Randomized Controlled Trial View details
14. Household and personal factors are sources of heterogenity in intestinal parasite clearance among Mexican children 6-15 months of age supplemented with vitamin A and zinc.
Srinivasan Punitha (2016) · Acta tropica
Randomized Controlled Trial View details
15. Effects of Helicobacter pylori treatment and vitamin and garlic supplementation on gastric cancer incidence and mortality: follow-up of a randomized intervention trial.
Li Wen-Qing (2019) · BMJ (Clinical research ed.) · n=2258
Randomized Controlled Trial View details
16. Vitamin A, C and/or E Intake During Pregnancy and Offspring Respiratory Health: A Systematic Review and Meta-Analysis.
Murphy VE (2025) · Journal of human nutrition and dietetics : the official journal of the British Dietetic Association
View details
17. Zinc, vitamin A, and micronutrient supplementation in children with diarrhea: a randomized controlled clinical trial of combination therapy versus monotherapy.
Dutta Phalguni (2011) · The Journal of pediatrics
Randomized Controlled Trial View details
18. Effect of vitamin A supplementation on iron status in humans: A systematic review and meta-analysis.
da Cunha Marcela de Sá Barreto (2019) · Critical reviews in food science and nutrition
Meta-analysis View details
19. Novel Cyclized Hexapeptide-9 Outperforms Retinol Against Skin Aging: A Randomized, Double-Blinded, Active- and Vehicle-Controlled Clinical Trial.
Chang H (2025) · Journal of cosmetic dermatology
View details
20. The Efficacy of Multivitamin, Vitamin A, Vitamin B, Vitamin C, and Vitamin D Supplements in the Prevention and Management of COVID-19 and Long-COVID: An Updated Systematic Review and Meta-Analysis of Randomized Clinical Trials.
Sinopoli Alessandra (2024) · Nutrients
Meta-analysis View details
21. Vitamin A and Zinc Supplementation Among Pregnant Women to Prevent Placental Malaria: A Randomized, Double-Blind, Placebo-Controlled Trial in Tanzania.
Darling Anne Marie (2017) · The American journal of tropical medicine and hygiene · n=1404
Randomized Controlled Trial View details
22. Vitamin and mineral supplements and thyroid cancer: a systematic review.
Zhang Li Rita (2013) · European journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP)
Systematic Review View details
23. Associating the blood vitamin A, C, D and E status with tuberculosis: a systematic review and meta-analysis of observational studies.
Xu Fei (2022) · Food & function
Meta-analysis View details
24. Antioxidant vitamin and mineral supplements for preventing age-related macular degeneration.
Evans Jennifer R (2017) · The Cochrane database of systematic reviews · n=55614
Meta-analysis View details
25. Effectiveness of intermittent iron and high-dose vitamin A supplementation on hemoglobin, iron and vitamin A status of schoolchildren in southern Ethiopia: a randomized placebo controlled trial.
Gutema Befikadu Tariku (2026) · European journal of clinical nutrition
Randomized Controlled Trial View details
26. Retinol, vitamins A, C, and E and breast cancer risk: a meta-analysis and meta-regression.
Fulan Hu (2011) · Cancer causes & control : CCC
Meta-analysis View details
27. Antioxidant vitamin and mineral supplements for slowing the progression of age-related macular degeneration.
Evans Jennifer R (2012) · The Cochrane database of systematic reviews · n=6150
Meta-analysis View details
28. Outcome of Combined Neoadjuvant Chemotherapy and Vitamin A in Advanced Cervical Carcinoma: A Randomized Double-Blind Clinical Trial.
Sanusi Rizal Sanif (2019) · Asian Pacific journal of cancer prevention : APJCP · n=15
Randomized Controlled Trial View details
29. The plasma level of retinol, vitamins A, C and α-tocopherol could reduce breast cancer risk? A meta-analysis and meta-regression.
Hu Fulan (2015) · Journal of cancer research and clinical oncology
Meta-analysis View details
30. Effects of a combination of beta carotene and vitamin A on lung cancer and cardiovascular disease (CARET)
Omenn G S (1996) · N Engl J Med · n=18314
Randomized Controlled Trial View details
31. Effect Modification by Serum Vitamin A Levels on the Association between Vitamin D and Relapse or Death in Patients with Digestive Tract Cancer.
Kohmura T (2026) · Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
View details
32. Effects of vitamin and multiple micronutrient supplementation for pregnant and/or lactating women on maternal and infant nutritional status in low- and middle-income countries: a systematic review and meta-analysis.
Shinde S (2025) · Advances in nutrition (Bethesda, Md.)
View details
33. Effects of zinc and vitamin A supplementation on prognostic markers and treatment outcomes of adults with pulmonary tuberculosis: a systematic review and meta-analysis.
Wagnew Fasil (2022) · BMJ global health · n=1375
Meta-analysis View details
34. The effect of a single dose of multivitamin and mineral combinations with and without guaraná on functional brain activity during a continuous performance task.
White David J (2017) · Nutritional neuroscience
Randomized Controlled Trial View details
35. Effect of zinc and vitamin A supplementation on immune responses in Indonesian pre-schoolers.
Kartasurya Martha Irene (2020) · Asia Pacific journal of clinical nutrition
Randomized Controlled Trial View details
36. Vitamin A supplementation for postpartum women.
Oliveira-Menegozzo Julicristie M (2010) · The Cochrane database of systematic reviews · n=9126
Meta-analysis View details
37. Circulating IGF-1 may mediate improvements in haemoglobin associated with vitamin A status during pregnancy in rural Nepalese women.
Arguello Margia A (2015) · Asia Pacific journal of clinical nutrition · n=589
Randomized Controlled Trial View details
38. Randomized Study of the Effects of Zinc, Vitamin A, and Magnesium Co-supplementation on Thyroid Function, Oxidative Stress, and hs-CRP in Patients with Hypothyroidism.
Rabbani Elaheh (2021) · Biological trace element research
Randomized Controlled Trial View details
39. WITHDRAWN: Vitamin A supplementation during pregnancy.
van den Broek Nynke (2010) · The Cochrane database of systematic reviews · n=23426
Systematic Review View details
40. Dietary vitamin A, C, and E intake and subsequent fracture risk at various sites: A meta-analysis of prospective cohort studies.
Zhou Penghe (2020) · Medicine · n=384464
Meta-analysis View details
41. Assessment of a combined strategy of seasonal malaria chemoprevention and supplementation with vitamin A, zinc and Plumpy'Doz™ to prevent malaria and malnutrition in children under 5 years old in Burkina Faso: a randomized open-label trial (SMC-NUT).
Sondo Paul (2021) · Trials
Randomized Controlled Trial View details
42. Vitamin and mineral supplementation for preventing dementia or delaying cognitive decline in people with mild cognitive impairment.
McCleery Jenny (2018) · The Cochrane database of systematic reviews · n=516
Meta-analysis View details
43. Provitamin A-biofortified maize increases serum β-carotene, but not retinol, in marginally nourished children: a cluster-randomized trial in rural Zambia.
Palmer Amanda C (2016) · The American journal of clinical nutrition · n=25
Randomized Controlled Trial View details
44. Influence of oral vitamin and mineral supplementation on male infertility: a meta-analysis and systematic review.
Buhling Kai (2019) · Reproductive biomedicine online · n=18
Meta-analysis View details
45. High-Dose Neonatal Vitamin A Supplementation to Bangladeshi Infants Increases the Percentage of CCR9-Positive Treg Cells in Infants with Lower Birthweight in Early Infancy, and Decreases Plasma sCD14 Concentration and the Prevalence of Vitamin A Deficiency at Two Years of Age.
Ahmad Shaikh M (2020) · The Journal of nutrition
Randomized Controlled Trial View details
46. Assessment of vitamin A, vitamin B2, vitamin B12, vitamin K, folate, and choline status following 4 months of multinutrient supplementation in healthy vegans: a randomised, double-blind, placebo-controlled trial.
Zerback Tim (2025) · European journal of nutrition
Randomized Controlled Trial View details
47. The effect of the classical and medium chain triglyceride ketogenic diet on vitamin and mineral levels.
Christodoulides S S (2012) · Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · n=46
Randomized Controlled Trial View details
48. Red palm olein biscuit supplementation modulates gut microbiota in vitamin A deficient rural Malaysian schoolchildren: a randomised controlled trial.
Tan Pei Yee (2025) · Nature communications
Randomized Controlled Trial View details
49. A Randomized Trial of a Novel Chewable Multivitamin and Mineral Supplement Following Roux-en-Y Gastric Bypass.
Perin Jamie (2018) · Obesity surgery · n=65
Randomized Controlled Trial View details
50. The Effect of a Multivitamin and Mineral Supplement on Immune Function in Healthy Older Adults: A Double-Blind, Randomized, Controlled Trial.
Fantacone Mary L (2020) · Nutrients
Randomized Controlled Trial View details