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Smoking status: not checked. Vitamin A: what these mean for you changes depending on whether you smoke or used to, and you have not told us. That check was skipped.
Head-to-head evidence comparison — which supplement is right for you?
Beta-Glucans vs Vitamin A: Vitamin A has the stronger overall evidence (7 vs 5/10); they're alternatives for support immune system — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Vitamin A wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
7 of 7 studies with measurable effects showed benefit.
Top outcomes
Verdict
Limited support
2 of 9 studies with measurable effects showed benefit.
Top outcomes
250-500mg yeast beta-glucan a day for immune use. Oat and barley beta-glucan has its own entry, Oat Beta-Glucan.
Morning, With or without food
Yeast-derived 1,3/1,6 beta-glucan (Wellmune is most studied)
The appropriate advice depends on the form of vitamin A, the reason for use, age, pregnancy status and total intake from all products. SupStack has not established a self-directed dose for this held use.
With fat-containing meal, Any time of day
Mixed carotenoids or low-dose retinyl palmitate
and 2 more not shown
4-12 weeks
During illness
2-4 weeks
2-4 weeks
4-8 weeks
With chronic excess
Galactomannans are the most effective soluble dietary fibers in type 2 diabetes: a systematic review and network meta-analysis
The American journal of clinical nutrition (2023) · Meta analysis · n=2685
Galactomannans had the highest effect on reducing the levels of HbA1c (SUCRA: 92.33%) and fasting blood glucose (SUCRA: 85.92%).
Effects of Oat Beta-Glucan Intake on Lipid Profiles in Hypercholesterolemic Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Nutrients (2022) · Meta analysis · n=927
The results were presented with the weighted mean difference (WMD) with a 95% CI.
A systematic review and meta-analysis of beta-glucan consumption on glycemic control in hypercholesterolemic individuals
International journal of food sciences and nutrition (2015) · Meta analysis · n=603
The summary estimate for fasting insulin was 0.75 pmol/L (95% CI -1.82 to 3.32). The abstract's estimate for fasting glucose lies outside its printed interval, so that number is withheld until the full text confirms it.
Effects of primary or secondary prevention with vitamin A supplementation on clinically important outcomes: a systematic review of randomised clinical trials with meta-analysis and trial sequential analysis
BMJ open (2024) · Meta analysis · n=1671672
Vitamin A did not reduce mortality in individually randomised trials (RR 0.99, 95% CI 0.93 to 1.05; I²=32%; p=0.19; 105 trials; moderate certainty), and this effect was not affected by the risk of bias.
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
Nutrients (2020) · Meta analysis · n=451723
IFA supplementation showed notable improvement in maternal anemia and the reduction in low birthweight, whereas LNS supplementation had no apparent effect on outcomes; further research that compares LNS and MMN supplementation could help understand differences with these commodities.
Vitamin A supplements for reducing mother-to-child HIV transmission
The Cochrane database of systematic reviews (2017) · Meta analysis · n=7298
Five trials in Malawi, South Africa, Tanzania and Zimbabwe, none of whose participants received antiretroviral therapy. Four trials had 6995 women and one had 303.
Vitamin A has a higher evidence score (7/10 vs 5/10) and wins in 2 of 3 categories.
For support immune system, Beta-Glucans has a higher relevance score (95 vs 75).
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.