I Found Some Excellent Sodium Free Meat Tenderizer..

[spoiltmom 44]

I'm not affiliated at all but I tried this and it's awesome! The meat is so so tender. http://www.pureandnaturalspices.com/product_p/sku16371.htm

They sell samples if you want to try it before buying a large jar.

[Grider 92]

^{I learned to use lemon or cooking wine since forever. not sure if it was because salt was in other or not, and my dad suffered w high BP- so my mom always used cookign wines, and lemons on fish and chickens.}