Effects of fish oil supplementation on non-steroidal anti-inflammatory drug requirement in patients with mild rheumatoid arthritis--a double-blind placebo controlled study.
Maxepa contains eicosapentaenoic acid (EPA) (171 mg/capsule) and docosahexaenoic acid (DHA) (114 mg/capsule). EPA acts as an alternative substrate to arachidonate, leading to the formation of the less proinflammatory prostaglandins ('3' series) and leukotrienes ('5' series). If Maxepa has anti-inflammatory properties it could be expected to reduce the requirement for NSAIDs in patients with RA. This has not been investigated nor has Maxepa therapy been studied over a full 1-yr period. Sixty-four patients with stable RA requiring NSAID therapy only were studied. Patients received either 10 Maxepa or air-filled placebo capsules per day for 12 months. All then received placebo capsules for a further 3 months. Patients were reviewed at 3-monthly intervals. NSAID requirement at entry visit for each patient was assigned as 100%. Patients were instructed to slowly reduce their NSAID dosage providing there was no worsening of their symptoms. Clinical and laboratory parameters of RA activity were also measured. There was a significant reduction in NSAID usage in patients on Maxepa when compared with placebo from month 3 [mean (95% C.I. for mean) requirement--71.1 (55.9-86.2)% and 89.7 (73.7-105.7)%, respectively]. This effect reached its maximum at month 12 [40.6 (24.5-56.6)% and 84.1 (62.7-105.5)%, respectively] and persisted to month 15 [44.7 (27.6-61.8)% and 85.8 (60.5-111.1)%, respectively] (P < 0.001, ANOVA). These patients were able to reduce their NSAID requirement without experiencing any deterioration in the clinical and laboratory parameters of RA activity.
Lau
C S
CS
Department of Medicine, Ninewells Hospital, Dundee, Scotland.
Morley
K D
KD
Belch
J J
JJ
D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy* / Q000503:physiopathology; D004281:Docosahexaenoic Acids; D004311:Double-Blind Method; D004338:Drug Combinations; D015118:Eicosapentaenoic Acid; D004910:Erythrocyte Membrane / Q000378:metabolism; D005227:Fatty Acids / Q000097:blood; D015525:Fatty Acids, Omega-3 / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D005395:Fish Oils / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction
D000894:Anti-Inflammatory Agents, Non-Steroidal; D004338:Drug Combinations; D005227:Fatty Acids; D015525:Fatty Acids, Omega-3; D005395:Fish Oils; C045153:Maxepa; D004281:Docosahexaenoic Acids; D015118:Eicosapentaenoic Acid