You can get betadine (povidone-iodine)almost everywhere, like pharmacies. If they sell bandaids, they've got Betadine
Betadine,HP, isopropyl-alcohol, Sterilon.. they all desinfect and damage tissue and slows down healing to some degree.
But in a survival situation you'd rather have a wound that takes a bit longer to heal than a infected wound..
However, HP causes the most tissue-damage of them all. It's also extremely painful if used on a large surface. Betadine isn't, but make sure you aren't allergic to povidone-iodine.
In my kits I carry both Betadine and Sterilon (Chlorhexidine gluconate). I use Betadine on regulair cuts and scrapes, but Sterilon if someone is allergic to betadine.
HTH
Btw: Betadine only has a 3-year shelf-life. Sterilon 5-years.