A great way to boost immune system specially during cold weather is by adding cod live oil in your daily intake.
It is great for memory, helps children with ADHD, Autism and seizures.
It is also great for lowering triglyceride & Cholesterol.
Make sure that if you are taking it in liquid or pill form it should be 1000 mg in dosage and the best company that makes it is either Norwegian or Carlson.
This is a popular item in my household.