Seems like the most common type is "Lugol's Iodine" and there are various brands that sell this kind or 'solution', a lot of people also use either "Iodoral" which is a brand name tablet form or "Nascent Iodine".
Nascent Iodine is a scientific term for iodine where the iodine molecule has the diatomic bond broken and has a high amount of electromagnetic energy associated with it. - Overview by Mark Sircus
(Some say this can't be proven but I don't have a scientific background and cannot comment).
There are a multitude of users for each sort so I don't think you can go wrong with any of the kinds but if you want to play it safe from what I gather Lugol's is a sure thing so to speak.
I personally just went with Nascent Iodine to start with but will probably try the others in the future as well.
Seems like the most common type is "Lugol's Iodine" and there are various brands that sell this kind or 'solution', a lot of people also use either "Iodoral" which is a brand name tablet form or "Nascent Iodine".
(Some say this can't be proven but I don't have a scientific background and cannot comment).
There are a multitude of users for each sort so I don't think you can go wrong with any of the kinds but if you want to play it safe from what I gather Lugol's is a sure thing so to speak.
I personally just went with Nascent Iodine to start with but will probably try the others in the future as well.