Research shows that omega-3 fatty acids in fish oil have an anti-inflammatory effect in the body. Several studies have shown that fish oil supplements may help reduce morning stiffness with rheumatoid arthritis (RA).
Some studies show that borage seed oil along with anti-inflammatory painkillers can reduce RA symptoms. These studies show that in people with RA, joints were less tender and swollen after six weeks. Keep in mind that even natural supplements can interact with medicines. So tell your doctor of all medicines and supplements you take.