Best Natural Anti-Inflammatory Supplements: What the Science Actually Supports

The supplement aisle for inflammation is crowded, but most options rest on a handful of small studies or none at all. Short-term inflammation is a normal cytokine response that helps the body heal, but when it turns chronic and low-grade, it drives pain, tissue damage and conditions like arthritis, heart disease, type 2 diabetes and dementia. Rather than listing every supplement equally, this guide grades each one by strength of evidence, from Grade A (multiple human trials) to Grade C (early or animal-only data), so you can prioritise quality over quantity. 

Want to understand what's actually driving that chronic inflammation in the first place? Read our full breakdown: Chronic Inflammation & Inflammaging: The Hidden Driver of How You Age.

Joint and muscle inflammation 

Turmeric (Curcumin): Grade A 

Curcumin, the antioxidant compound in turmeric, inhibits enzymes involved in inflammatory activity and is the most widely researched anti-inflammatory compound on the market. Recent meta-analyses and clinical trials continue to support its use for joint conditions such as osteoarthritis and rheumatoid arthritis, alongside benefits for cardiovascular and metabolic markers. The effective dose used in most trials is 500-2,000 mg of curcumin per day, taken with piperine or a fat source to improve absorption. 

Ginger: Grade B 

Ginger root's anti-inflammatory effects come primarily from gingerol and zingerone. It may help ease nausea, bloating and gas, and has shown promise for reducing pain in arthritis and osteoarthritis. Up to two grams daily is considered safe; higher doses may produce blood-thinning effects. 

SAM-e: Grade B 

S-adenosyl-methionine (SAM-e) is produced naturally in the body and plays a role in regulating gene expression. It's been used for inflammatory conditions including depression, osteoarthritis and liver problems, with some trials suggesting effects comparable to NSAIDs for arthritis pain. Doses range from 200-1,200 mg per day depending on the condition, and it can take several weeks to feel the effects. 

Bromelain: Grade C 

Bromelain, an enzyme derived from pineapple stems, has anti-inflammatory properties, with its proteolytic (protein-breaking) activity being the primary mechanism responsible for this effect.

Additionally, bromelain may help alleviate swelling, bruising, and digestive discomfort and reduce pain in those with arthritis and osteoarthritis.

Up to a 1.5-gram daily dose of bromelain is considered safe; however, higher doses may produce blood-thinning effects and digestive irritation.

Capsaicin: Grade C 

Capsaicin, the compound that gives chilli peppers their heat, can reduce the body's ability to transmit pain signals, which is why it's a common ingredient in topical pain-relief treatments. You can also add chilli peppers to meals or take a capsaicin supplement. 

Cardiovascular and metabolic inflammation 

Fish Oil (Omega-3): Grade A 

Omega-3 fatty acids from fish oil are among the most consistently studied anti-inflammatory compounds, with multiple meta-analyses linking supplementation to reductions in inflammatory markers such as CRP. The typical intake target is 1,100 mg for women and 1,600 mg for men daily, which most people don't reach through diet alone. Oily fish like salmon, mackerel, sardines and tuna are natural sources, as are walnuts, flax and chia seeds; vegans can use algae-based supplements.

Garlic: Grade B

Garlic's allicin content gives it anti-inflammatory properties. Clinical trials have found reductions in inflammatory enzymes among adults with obesity after several weeks of daily garlic supplementation, though large-scale human trials are still limited. Two to four cloves in cooking, or an aged garlic extract supplement, is enough to see potential benefits.

Green Tea Extract: Grade B

Green tea's high antioxidant content, particularly epigallocatechin gallate (EGCG), helps prevent oxidative damage to cells. Studies combining green tea extract with exercise have shown reduced inflammation. Two to three cups of green tea daily, or 300-400 mg of extract, is the typical effective range, though it does contain caffeine.

Resveratrol: Grade B

This antioxidant, found in grapes, nuts, berries, dark chocolate and red wine, has been studied for anti-inflammatory effects in chronic conditions including liver disease, heart disease, obesity and ulcerative colitis. 

Immune and systemic inflammation 

Zinc: Grade A 

Zinc plays a critical role in immune function and wound healing. Clinical trials in older adults have shown zinc supplementation reduces oxidative stress, lowers inflammatory markers, and can cut infection rates by as much as two-thirds, one of the more consistent findings in this space. Zinc deficiency has also been linked to a higher risk of arthritis. Supplement doses for deficiency typically range from 8-11 mg per day, but zinc is only needed in trace amounts and more isn't better.

Quercetin: Grade A 

Quercetin is a flavonoid found in leafy greens, broccoli, berries and tomatoes with anti-inflammatory effects supported by a good body of human research, particularly for asthma, allergies and heart disease. It's often paired with bromelain for complementary effects, and may help those with acid reflux, dysbiosis or leaky gut. The typical dose is 500-1,000 mg per day. 

Vitamin D: Grade A 

Low vitamin D levels are consistently linked to raised inflammation, and an estimated one billion people globally are deficient. Vitamin D also supports bone growth, muscle function and calcium absorption. The recommended daily intake is 15 mcg; because it's fat-soluble, exceeding the recommended dose can lead to toxicity, so supplementation makes most sense once a deficiency is confirmed. Food sources include fish, egg yolks and dairy.

Vitamin C: Grade B 

Vitamin C is a powerful antioxidant that neutralises free radicals and reduces oxidative damage. High doses have been used in patients with acute respiratory illnesses, including influenza, pneumonia and COVID-19, to help reduce acute inflammation. Doses above 2,000 mg may cause diarrhoea, though it's not possible to overdose since any excess is excreted. It's best obtained from colourful fruits and vegetables where possible. 

Spirulina: Grade C 

This blue-green algae is rich in iron, protein, magnesium, B vitamins and beta-carotene. Some studies suggest it may prevent anemia and reduce chronic inflammation, particularly in older adults, and may help with inflammation linked to type 2 diabetes and high blood pressure. Up to eight grams per day is generally considered safe. 

Cat's Claw: Grade C 

This plant root bark is used in herbal medicine for its ability to inhibit TNF-alpha, a pro-inflammatory molecule. It's used for conditions including arthritis, peptic ulcers and leaky bowel syndrome, typically as a 20-60 mg capsule, or as a tea using 1,000 mg of root bark per eight ounces of water. 

CBD Oil: Grade C 

CBD, derived from hemp, interacts with the body's endocannabinoid system and has anti-inflammatory properties alongside effects on sleep and mood. It's available in oil, edible and topical forms, and different formats may work better for different people. 

Baseline micronutrients worth checking first 

Before reaching for a targeted supplement, it's worth confirming you're not simply short on the basics. These vitamins support immune and inflammatory regulation more broadly, and deficiency is common enough to be worth ruling out first. 

Vitamin A: Supports immune function and helps prevent the immune system from becoming overactive, which can drive persistent inflammation. Found in liver, fish oil, eggs and leafy greens.

B Vitamins: Folic acid and a combination of B6, B9 and B12 have been linked to reductions in inflammatory markers. Found in kale, bell peppers, mushrooms, liver and dark leafy greens.

Vitamin E: An antioxidant that plays an anti-inflammatory role in the skin, helping prevent UV-related free radical damage. Found in olive oil, almonds, sunflower seeds and avocado.

Vitamin K: K1 and K2 help reduce inflammatory markers linked to age-related disease and support bone health and blood clotting, though a sizable share of the population is deficient. K1 is in leafy greens; K2 is in chicken, liver and eggs.

Take control of your health with GlycanAge

Herbal and vitamin supplements show promise for helping manage inflammation in various chronic health conditions, though more research is needed to support targeted, individual use, and evidence quality varies significantly from one supplement to the next.

"I'm a doctor who has transferred from prescribing pills to prescribing lifestyle. That's really at the core of happy, healthy, long living. I measure biological age in all of my clients now as a critical piece of data we should all be mapping to."

— Dr. Alka Patel,  GP, Lifestyle Medicine Doctor, Author & Podcaster

Chronic inflammation is a factor in many long-term health conditions, so being able to quantify it is genuinely useful for prevention and management. This is what the GlycanAge biological age test measures: chronic inflammation in the body, used to calculate biological age.

Genes, lifestyle choices and the natural passage of time all affect biological age. Testing can help you see which lifestyle choices, including supplementation, are actually moving the needle, rather than relying on general population averages.

Getting started only takes a few drops of blood from a simple finger-prick sample, which you mail back to the lab. Results are typically ready in 3-5 weeks, with a personalised report on your findings.

Every plan includes a Result Interpretation Call, which you can book at a time that suits you to go through your results 1-on-1 with a specialist and build an action plan.

With a range of price points and payment plans, there's an option to fit most budgets for anyone who wants an accurate, reliable way to understand what's driving their inflammation.

Start your journey by ordering your GlycanAge home testing kit.

External sources

• https://pmc.ncbi.nlm.nih.gov/articles/PMC12832973/ — Fan Y, Yi Z, Mao S, Wen J, Zhang J, Zhang Q, Liu R. Curcumin for the clinical treatment of rheumatoid arthritis: a systematic review and meta-analysis of placebo-controlled randomized clinical trials. Front Immunol. 2026;16:1726157. 

• https://ods.od.nih.gov/factsheets/omega3fattyacids-consumer/ — NIH Office of Dietary Supplements. Omega-3 Fatty Acids: Fact Sheet for Consumers.

• https://pubmed.ncbi.nlm.nih.gov/35914448/ — Musazadeh V, et al. Efficacy of the omega-3 fatty acids supplementation on inflammatory biomarkers: an umbrella meta-analysis. Int Immunopharmacol. 2022;111:109104. 

• https://pubmed.ncbi.nlm.nih.gov/17344507/ — Prasad AS, Beck FW, Bao B, Fitzgerald JT, Snell DC, Steinberg JD, Cardozo LJ. Zinc supplementation decreases incidence of infections in the elderly: effect of zinc on generation of cytokines and oxidative stress. Am J Clin Nutr. 2007;85(3):837-44. 

• https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/ — NIH Office of Dietary Supplements. Zinc: Fact Sheet for Health Professionals.

• https://pubmed.ncbi.nlm.nih.gov/28516265/ — Holick MF. The vitamin D deficiency pandemic: approaches for diagnosis, treatment and prevention. Rev Endocr Metab Disord. 2017;18(2):153-165. 

• https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/ — NIH Office of Dietary Supplements. Vitamin D: Fact Sheet for Health Professionals.

• https://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/ — NIH Office of Dietary Supplements. Vitamin C: Fact Sheet for Health Professionals.