You may be hypersensitive to astaxanthin and show Astaxanthin side effects. Severe astaxanthin side effects that could very seriously affect people's health are really rare.
The benefits of Astaxanthin for pregnant, lactating women and for children are currently not studied. However, if a child swallows an Astaxanthin capsule there shouldn't be any damage to his health.
However, when they centered on only reflux syndrome, these people found a significant advantage in the group receiving the high dose Astaxanthin supplement, as opposed to other groups.