Generally, it takes 2 weeks to start noticing the benefits, but it depends on the dosage and what conditions you need improvement. Joint comfort happens in a few days. Skin and mood health may take longer. Cognitive health is likely to take longer than that.
You also need to consider the severity of Omega-3 deficiency since it can affect the timing of benefits. Most people have 3-4% Omega-3 levels in their blood. Ideally, we should aim for 8-10% in the Omega-3 Index Test. An OmegaQuant blood test can help determine your baseline Omega-3 levels.
Regular consumption of seafood and Omega-3 supplements will help you achieve ideal Omega-3 levels in your blood. For more info, please visit: https://www.amazon.com/OmegaVia-Ultra-Pure-Strength-Concentration-Triglyceride/dp/B07Z879YCL