Fish oil (particularly cod liver oil) has high levels of vitamin A which is known to be toxic at high doses (above what would typically be consumed through fish oil supplements) and some studies suggest is harmful at lower doses (consistent with daily supplementation).
Fish oil (particularly cod liver oil) has high levels of vitamin A which is known to be toxic at high doses (above what would typically be consumed through fish oil supplements) and some studies suggest is harmful at lower doses (consistent with daily supplementation).