Hyaluronic Acid
Also known as HA, Sodium hyaluronate
Glycosaminoglycan naturally present in skin, joint synovial fluid, and connective tissue, capable of binding many times its weight in water; oral and injectable forms are studied for skin hydration and joint lubrication.
Be careful if: pregnant, breastfeeding, some medical situations
Suspect a side effect? Report it to the MHRA Yellow Card scheme ↗
What the research actually shows
We link to relevant studies and leave interpretation to you and your healthcare professional.
Safety and considerations
What sources report about side effects, who should be careful, and medicines to ask about first.
Be careful if you…
| Applies to | What sources say | Sources |
|---|---|---|
| pregnant | No pregnancy safety guidance found in any chain source checked (no UK SmPC, BNF/NICE, NHS, NIH ODS or EMA HMPC entry exists for oral hyaluronic acid); the oral-supplement trials studied non-pregnant adults. Not studied in pregnancy — assume nothing and ask a clinician. | Gao YR, et al. Oral administration of hyaluronic acid to improve skin conditions via a randomized double-blind clinical test. Skin Res Technol 2023;29(11):e13531 (PMID 38009035) |
| breastfeeding | No breastfeeding safety guidance found in any chain source checked (no UK SmPC, BNF/NICE, NHS, NIH ODS or EMA HMPC entry exists for oral hyaluronic acid); no lactation data in the oral-supplement trials. Not studied while breastfeeding — assume nothing and ask a clinician. | Gao YR, et al. Oral administration of hyaluronic acid to improve skin conditions via a randomized double-blind clinical test. Skin Res Technol 2023;29(11):e13531 (PMID 38009035) |
| some medical situations | Scope: the cited studies assessed ORAL hyaluronic acid supplements. Injectable HA (dermal fillers, joint injections) is a separate licensed medical product class and is outside this profile’s evidence. | Amin P, et al. Oral Hyaluronic Acid Supplement: Efficacy in Skin Hydration, Elasticity, and Wrinkle Depth Reduction. J Drugs Dermatol 2025;24(9):910-9 (PMID 40911749) |
Sources
Amin P, et al. Oral Hyaluronic Acid Supplement: Efficacy in Skin Hydration, Elasticity, and Wrinkle Depth Reduction. J Drugs Dermatol 2025;24(9):910-9 (PMID 40911749)Gao YR, et al. Oral administration of hyaluronic acid to improve skin conditions via a randomized double-blind clinical test. Skin Res Technol 2023;29(11):e13531 (PMID 38009035)
Suggested uses (unproven)
Where people report using it and what trials suggest
- Moderate evidenceSkin moisture (oral, small trials)
- Strong evidenceKnee OA (injection — clinical, not supplement)
- Weak evidenceDry-eye adjunct (oral)
Where the evidence is negative
Common claims the trials do not support
- Oral HA joint-pain evidence is thin and industry-biased.
- Topical molecule too large to 'fill' wrinkles as marketed — works by surface hydration.
Injected HA works for knee OA; oral HA has small positive skin-moisture trials and weak oral joint evidence.
Evidence grades reflect study quality and consistency, not marketing claims.
Ordered by strength of evidence, then result direction.
01Effects of collagen-based supplements on skin's hydration and elasticity: A systematic review and meta-analysisDanessa G, et al. · Indian journal of dermatology, venereology and leprology · 2025PMID 40826844 ↗02Skin Aging and Carotenoids: A Systematic Review of Their Multifaceted Protective MechanismsStanescu C, et al. · Nutrients · 2025PMID 40871623 ↗03Pharmacological Treatments of Temporomandibular Disorders: A Systematic Review Including a Network Meta-AnalysisChristidis N, et al. · Drugs · 2024PMID 38103150 ↗04Cancer Incidence, Mortality, Years of Life Lost, Years Lived With Disability, and Disability-Adjusted Life Years for 29 Cancer Groups From 2010 to 2019: A Systematic Analysis for the Global Burden of Disease Study 2019Global Burden of Disease 2019 Cancer Collaboration, et al. · JAMA oncology · 2022PMID 34967848 ↗05Botulinum toxin type A for facial wrinklesCamargo CP, et al. · The Cochrane database of systematic reviews · 2021PMID 34224576 ↗06Physiochemical properties and application of hyaluronic acid: a systematic reviewSalwowska NM, et al. · Journal of cosmetic dermatology · 2016PMID 27324942 ↗Show all 11 studies
Published research summaries are unavailable.
Why people look into Hyaluronic Acid — and what they report
Associated conditions and community-reported outcomes, wrapped together on one page. Aggregates appear only once enough reports arrive.
Where to get Hyaluronic Acid (UK)
How this compound is sold in the UK, and where our readers typically find it.
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