Discuss Chris John's answer to: How long does it take for fish oil to work for joints?

It should take about 2 weeks for you to see some results for your joints by taking fish oil supplements. However, results may vary from individual to individual. You need to keep taking fish oil supplements for them to have a continual benefit on joint health. You should also make sure that you take a quality fish oil supplement. Recent news articles revealed the findings of independent lab tests conducted on several popular brands of fish oil supplements. Many of them contained PCBs.
 
Stick with a safe brand of fish oil supplement —one that you know is high quality. I use Triple Strength Omega 3. There are others – check out the manufactures and the potency of fish oil. A good dose is 2000 mg of omega 3 fatty acids where 1200 mg is comprised of EPA and DHA. The purity level should be above 90 percent.