Hyaluronic Acid

Hyaluronic acid is a 6.5–7.0/10, Worth trying pick for people targeting skin hydration, mild joint comfort, or dry eye who want a cheap, near-foolproof, very safe add-on and are willing to track one endpoint rather than expect a dramatic effect. The evidence-risk balance justifies the tier cleanly: Sun 2022 and Hsu 2021 show real oral skin benefit, de Carvalho 2024 shows mild joint benefit, and dry-eye drops are a confirmed mainstream lubricant, all against an essentially benign safety profile. It is not a strong recommend because the oral effect sizes stay small and molecular weight drives much of the result. Buy it as a complement, not a centerpiece, and choose a low molecular weight form.

✅ Best for: Adults with dry skin or visible photoaging who want a low-friction hydration add-on and will use a topical serum plus an optional 120 mg/day oral capsule. People with mild-to-moderate knee osteoarthritis who already exercise and manage weight, and want an adjunct that may trim NSAID use per Cicero 2020. Anyone with dry-eye symptoms who needs a mainstream lubricating drop. Skin-focused stackers who already take collagen peptides and want a complementary hydration mechanism. Cost-sensitive readers who want a safe entry supplement with a real, if modest, instrument-measurable effect.

❌ Avoid if: You expect a dramatic anti-aging or cartilage-regrowing result, because the oral effect sizes are small. You want the joint or facial-volume benefit of an injection, which is a separate clinical procedure: HA dermal fillers and viscosupplementation carry injection-site, infection, and rare vascular risks and require a qualified clinician, so do not conflate them with the supplement. You react to a specific product, which usually means an excipient allergy rather than HA itself. Sourcing caveat: pick a product that states its molecular weight and dose, since unlabeled forms are the main reason HA underdelivers, and pregnant or breastfeeding people should default to topical use and ask a clinician before oral supplementation.