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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?
Hyaluronic Acid vs Vitamin A: Vitamin A has the stronger overall evidence (7 vs 5.5/10); they're alternatives for improve skin health — 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
Too few graded studies
1 of 1 studies with measurable effects showed benefit.
Top outcomes
Verdict
Limited support
2 of 9 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Hyaluronic Acid and Vitamin A have evidence — compare verdict strength side-by-side.
120-200 mg daily (the highest dose in the cited trials was 200 mg a day). Label products go up to 240 mg, above that dose.
With food, Once daily
Low molecular weight hyaluronic acid capsules
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
4-8 weeks
8-12 weeks
8-12 weeks
2-4 weeks
2-4 weeks
4-8 weeks
With chronic excess
Efficacy of fractional CO(2) laser therapy combined with hyaluronic acid dressing for treating facial atrophic acne scars: a systematic review and meta-analysis of randomized controlled trials
Lasers in medical science (2023) · Meta analysis · n=623
In addition, fractional CO2 laser combined with HA dressing therapy had a lower incidence of hyperpigmentation than fractional CO2 laser alone (RR=0.37, 95% CI [0.23, 0.61], P<0.0001).
Comparative effectiveness of pharmacologic interventions for knee osteoarthritis: a systematic review and network meta-analysis
Annals of internal medicine (2015) · Meta analysis · n=33243
This method allowed comparison of common treatments of knee OA according to their relative efficacy.
Long-term effectiveness of intra-articular injectables in patients with knee osteoarthritis: a systematic review and Bayesian network meta-analysis
Journal of orthopaedic surgery and research (2025) · Meta analysis · n=5089
Bayesian network meta-analysis of 37 randomised trials in 5,089 people with knee osteoarthritis, comparing injections into the knee followed for at least a year.
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 5.5/10) and wins in 2 of 3 categories.
Both Hyaluronic Acid and Vitamin A score equally (68) for improve skin health.
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.