Question What is the Omega3/DHA Fish Oil dosage for a 12 year old? Asked by MB M from Canada Tweet 11 August 2010 Your documented dosage information for your Omega 3/DHA Fish Oil product states to inquire about what dosage should be used for children. I am asking about a 12 year old male. Thank you Answer Answered by Joanna Machin from Xtend-Life 12 August 2010 Hi MB, Thanks for your question. If this is just for overall general health, at age 12+ they are fine to take the recommended minimum 2 soft gels per day. These can be taken at any time, together or separately.