Rheumatoid arthritis results summary
| Quality/effect size | None | Small | Medium | Large |
| Very low | Collagen (pain, function, disease activity), creatine (function, disease activity), elemental diets (pain, function, TJC, SJC, MS), glucosamine (CRP, ESR), herbal medicine (function, TJC, SJC), hypoallergenic diets (pain, TJC, SJC, MS), ketogenic diets (TJC, CRP, ESR), Linoleic acid (CRP, ESR), manganese (disease activity), Mediterranean diet (disease activity), microalgae oil (SJC), pomegranate (pain, function, TJC, SJC), vitamin B6 (SJC), vitamin E (TJC, SJC, MS, CRP, ESR) | Gum arabic (disease activity), herbal medicine (pain), Mediterranean diet (fatigue, function), microalgae oil (function, disease activity, TJC), mussel extracts (pain, function), quercetin (disease activity, TJC, SJC), vitamin B6 (disease activity, TJC, CRP, ESR) | Nigella sativa oil (pain, disease activity, TJC, SJC, morning stiffness) | Ginger+curcumin + black pepper (disease activity), Mediterranean diet (pain), potassium (pain, disease activity, TJC, SJC, CRP, ESR), vitamin E (pain) |
| Low | Alpha-lipoic acid (pain, CRP), ambrotose complex (function), Andrographis Paniculata (fatigue), rose hip powder (function, QoL), vegetarian/vegan diet (pain, function), | Alpha-lipoic acid (function), ambrotose complex (pain), antioxidant combinations (disease activity), co-enzyme Q10 (CRP), rose hip powder (pain, disease activity), zinc (pain, function) | Beta-hydroxy-beta-methylbutyrate+glutamine + arginine (disease activity, function, fatigue), quercetin (pain, function) | Antioxidant combinations (pain, function) |
| Moderate | Fish oil/omega-3 (function, disease activity), probiotics (function, SJC, CRP, disease activity), vitamin D (pain, disease activity) | Fish oil/omega-3 (pain) | – | – |
| High | – | – | – | – |
CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; MS, morning stiffness; QoL, quality of life; SJC, swollen joint count; TJC, tender joint count.