Hyaluronic acid supplements: do the capsules work?
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- Hyaluronic acid 100 mg capsules. Best for: Adults who want a dose near the 120 mg skin trial. See options on Amazon
- Hyaluronic acid with MSM. Best for: People looking at joint comfort formulas. See options on Amazon
- Liquid hyaluronic acid. Best for: People who prefer not to swallow capsules. See options on Amazon
What hyaluronic acid is
Hyaluronan, or hyaluronic acid, is present in all connective tissues and organs, including the skin and joint fluid. A 2014 review in Nutrition Journal notes that the skin contains about half of the body's HA, where it helps hold moisture.
HA is used as a medicine, cosmetic and food, and the review says it became a popular dietary supplement in Japan for skin moisture. It also reports that swallowed HA is absorbed and partly distributed to the skin. NOW Foods' label, for example, lists hyaluronic acid from sodium hyaluronate.
What the research shows
| Use | Evidence |
|---|---|
| Dry skin, wrinkles | A small placebo-controlled trial showed improvement over 8 to 12 weeks |
| Osteoarthritis and low back pain | 9 of 11 studies showed less pain or better function |
| Low back pain | One study; more research needed |
Skin. In a 2021 double-blind trial in Nutrients, 40 healthy Asian men and women aged 35 to 64 took 120 mg of HA or placebo daily for 12 weeks. The HA group had better wrinkle assessments, skin water content, water loss and elasticity, with gains seen from 8 weeks.
Joints. A 2024 systematic review in the Mediterranean Journal of Rheumatology found 11 studies with 597 patients, mostly with osteoarthritis. Follow-up ranged from 4 weeks to 12 months, and doses from 30 mg to 300 mg a day. Nine studies saw improvements in pain, stiffness or function, and adverse effects were rare and mild. The authors called oral HA a safe and effective option for osteoarthritis, but said more studies are needed for low back pain.
Many of these studies are small, and some products combine HA with other ingredients, so results may not apply to every capsule.
Oral HA vs serums and injections
- Capsules and liquids. Swallowed HA is what the trials above tested.
- Topical serums. Skin creams and serums are applied to the skin and are a separate product from capsules.
- Combination joint products. A 2023 trial tested HA combined with krill oil and astaxanthin in 100 people with mild osteoarthritis and found less joint pain at 12 weeks. That result cannot be credited to HA alone.
Safety
- Side effects. The 2024 review found adverse effects were rare and mild. In the combination trial, the most common complaints in both groups were digestive.
- Pregnancy, medicines and conditions. NOW Foods' label says to consult a physician if you are pregnant or nursing, taking medication, or have a medical condition, and lists the product for adults only.
- Extra ingredients. NOW Foods' Double Strength capsule also contains L-proline, alpha lipoic acid and grape seed extract. Check every ingredient if you take other supplements or medicines.
- Joint pain needs a diagnosis. Ongoing joint pain or back pain should be checked by a doctor.
How to choose hyaluronic acid capsules
- HA amount. Look for mg of hyaluronic acid or sodium hyaluronate per capsule. NOW Foods sells 50 mg and Double Strength 100 mg versions, taken 1 capsule 1 to 2 times daily with food.
- Match studied doses. The skin trial used 120 mg a day; joint studies ranged from 30 mg to 300 mg.
- Single ingredient or blend. Many products add MSM, collagen, ceramides or other ingredients. Blends make it harder to know what helped.
- Vegan options. NOW Foods' capsules are labeled vegan. Check other brands' source.
- Patience. Skin trials saw changes from 8 to 12 weeks.
What to look for when you buy
Hyaluronic acid 100 mg capsules
Best for: Adults who want a dose near the 120 mg skin trial
NOW Foods' Double Strength gives 100 mg of hyaluronic acid per capsule, taken 1 to 2 times daily with food.
Watch out: Also contains L-proline, alpha lipoic acid and grape seed extract. Ask your doctor if pregnant, nursing or on medicines.
See options on AmazonHyaluronic acid with MSM
Best for: People looking at joint comfort formulas
HA and MSM combination capsules are widely sold for joints.
Watch out: The trials reviewed mostly tested HA, not this mix. Check the HA mg per serving.
See options on AmazonLiquid hyaluronic acid
Best for: People who prefer not to swallow capsules
Liquid HA supplements are also sold.
Watch out: Measure carefully and check added ingredients.
See options on AmazonQuestions people ask
- Do hyaluronic acid supplements work?
- Small trials suggest they may improve skin moisture and wrinkles and ease osteoarthritis pain, but studies are limited.
- How much hyaluronic acid should I take?
- Follow the label. Studies used 30 mg to 300 mg a day, and the main skin trial used 120 mg.
- How long does hyaluronic acid take to work?
- In the skin trial, improvements appeared at 8 weeks and continued at 12 weeks.
- Is oral hyaluronic acid safe?
- A 2024 review found side effects rare and mild. Ask your doctor if you are pregnant, nursing or take medicines.
- Is hyaluronic acid better as a serum or a supplement?
- They are different. Serums are applied to the skin; the trials here tested swallowed HA.
Sources
- Oral Hyaluronan Relieves Wrinkles and Improves Dry Skin: A 12-Week Double-Blinded, Placebo-Controlled Study (pmc.ncbi.nlm.nih.gov), Nutrients (PMC8308347)
- Oral Hyaluronic Acid in Osteoarthritis and Low Back Pain: A Systematic Review (pmc.ncbi.nlm.nih.gov), Mediterranean Journal of Rheumatology (PMC11778613)
- Ingested hyaluronan moisturizes dry skin (pmc.ncbi.nlm.nih.gov), Nutrition Journal (PMC4110621)
- A Multicenter, Randomized, Double-Blinded, Placebo-Controlled Clinical Trial of a Krill Oil, Astaxanthin, and Oral Hyaluronic Acid Complex on Joint Health (pmc.ncbi.nlm.nih.gov), Nutrients (PMC10490060)
- Hyaluronic Acid, Double Strength 100 mg Veg Capsules (www.nowfoods.com/products/supplements/hyaluronic-acid-double-strength-100-mg-veg-capsules), NOW Foods