Sir, Fish oil has been demonstrated to have symptomatic benefits  and improve disease activity in RA . In addition, fish oil has been shown to have NSAID-sparing effect in patients with RA [3–6]. Recently, the use of fish oil in patients with early RA has been shown to reduce cardiovascular risk factors in these patients already at increased risk of cardiovascular disease . In addition, reduction in NSAID use is likely to reduce cardiovascular and gastrointestinal harm in these patients. A previous study of complementary medicine use in outpatients with OA showed 5% were taking fish oil supplements . Fish oil is widely marketed to the general public for joint and general health benefits. We undertook this population-based study to determine the use of fish oil and its effects in the community.