Health Benefits

• Fish oil may help to encourage brain development in toddlers, and it may prevent common learning and behavioral disorders. Fish oil also supports the health of the heart, immune system and skin, according to the National Institutes of Health.
  
  

Kid-Friendly Supplements

• Most children will not take pure fish oil. However, omega-3 supplements are available in the form of gummies, chocolates and flavored chewable softgels, which most children will take eagerly.
  
  

Dosage

• A child between 1 and 3 should take 200 mg of fish oil per day. Children between 4 and 8 should have 400 mg per day, and children between 9 and 13 should have 800 mg daily.
  
  

Side Effects

• Fishy burps or reflux are the most common side effects associated with fish oil supplements. Severe side effects are rare, but parents should always consult a physician before giving any supplement to a child with a medical condition.
  
  

Avoiding Toxicity

• Commercial supplements rarely contain detectable levels of pollutants like mercury, but parents can avoid this potential problem by purchasing from a reputable company that offers third-party testing of their products.