What is the difference between bladderwrack "thallus" and bladderwrack "fucus vesiculosis"?  Is one better than the other as far as absorption & nutritional benefit is concerned?  

Thallus is a more general term that includes all varieties of fucus, including fucus vesiculosis.

Fucus vesiculosis is specifically recommended so I would use that rather than a variety less closely related.

For example, both orange and grapefruit are citrus. Citrus is the same level as thallus.

Thanks Lloyd.   I appreciate your input.  I'm still doing very well & hope that you are doing the same.  It's so great to be a member of this forum.    

Thanks Lola.  The article that you attached is so informative.  I love learning about the reasoning behind Dr. D's recommendations.  I do take Deflect O & Polyvite O, both of which have in their list of ingredients fucus vesiculosis in the proper amounts.  I know that taking these supplements has resulted in helping me maintain my body in a very healthy state.  I'll be 73 in March & still going strong thanks to what I have learned on this Forum.  

keep up that wonderful spirit! :)