What is the recommended dosage for Hyaluronic Acid?

General: 120-240 mg/day; Skin Hydration: 120-200 mg/day

What are the side effects of Hyaluronic Acid?

Potential side effects include: Generally well-tolerated, Rare mild gastrointestinal discomfort.

What is hyaluronic acid and how may it support skin health?

Hyaluronic acid (HA) is a glycosaminoglycan naturally found in skin that holds up to 1,000 times its weight in water. Oral HA supplementation has been studied for skin hydration, and several RCTs show improvements in skin moisture content. HA levels in skin decrease with age, contributing to dryness and wrinkle formation.

What dosage of oral hyaluronic acid has been studied for skin?

Clinical trials have used 120–240 mg of oral hyaluronic acid per day. Both high and low molecular weight forms have been studied, with low molecular weight HA (below 300 kDa) showing better absorption in some studies. Improvements in skin hydration have been observed after 4–8 weeks of supplementation.

What are the potential side effects of oral hyaluronic acid?

Oral hyaluronic acid is generally well tolerated at studied doses. Mild gastrointestinal discomfort has been reported rarely. Theoretical concerns about HA promoting cancer growth exist from in vitro studies, but clinical evidence in humans is lacking. Individuals with a history of cancer should consult their healthcare provider.

Hyaluronic Acid
Hyaluronic Acid

collagen_protein

別名: Hyaluronan, Sodium Hyaluronate, HA

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About

Hyaluronic acid is a glycosaminoglycan that retains up to 1,000x its weight in water, supporting dermal hydration. Oral supplementation increases circulating hyaluronic acid fragments that may stimulate fibroblast HA synthesis and upregulate moisture-retention in the stratum corneum. A 2017 meta-analysis found oral HA (120-240 mg/day) significantly improved skin moisture and reduced transepidermal water loss.

How It Works

Glycosaminoglycan that retains up to 1,000x its weight in water, supporting dermal hydration; oral supplementation increases circulating hyaluronic acid fragments that may stimulate fibroblast HA synthesis and upregulate moisture-retention in the stratum corneum.

Evidence For Conditions

症状・状態	グレード	研究数	参加者数
Dry Skin	B	10	620	詳細を見る →
Aging Skin & Wrinkles	B	8	480	詳細を見る →
Skin Barrier Function	D	3	180	詳細を見る →

Side Effects

Generally well-tolerated
Rare mild gastrointestinal discomfort

Drug & Supplement Interactions

No significant drug interactions documented

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Related Ingredients

Collagen Peptides Keratin Elastin

基本情報

用量: General: 120-240 mg/day; Skin_Hydration: 120-200 mg/day
剤形: capsule tablet liquid powder
天然の供給源: Bone broth, Soy-based foods, Root vegetables, Citrus fruits (supports endogenous production)
上限量: Not established; well-tolerated up to 200 mg/day in trials lasting 12 months
推奨摂取タイミング: With meals for better absorption

エビデンスの要約

Dry Skin B

Aging Skin & Wrinkles B

Skin Barrier Function D

FDAに関する免責事項: これらの記述は米国食品医薬品局（FDA）による評価を受けていません。本ウェブサイトの製品および情報は、疾病の診断、治療、治癒、または予防を目的としたものではありません。表示されているエビデンスグレードは、公開された査読済み研究の分析に基づいており、医療上の助言を構成するものではありません。サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。