Could Kelp replace thyroxine ? I have read contradictory opinions on whether people with Hashi's should take kelp. I am unable to tolerate T3 in any form, but did a trial of kelp for 2 weeks along with my Levo. After 2 weeks I became overmedicated (which always happened with T3, but much more quickly). I felt much more energetic when taking the Kelp. So, should I cut down my T4 and continue with the Kelp, or would I be best to keep the T4 table and add a smaller dose of Kelp. I am hypo - on 88.75/88.75/100/ Wockhardt thyroxine.