Potable Aqua iodine tablets safely treats giardia and other waterborne pathogens. An alternative to larger water purifiers...

One small 2" bottle contains 50 germicidal tablets of 20mg tetraglycine hydroperiodide. Provides safe drinking water when used with proper filtration. Shelf life of unopened bottle is 5 years; but only 6 months after bottle is opened.

Note: Iodine does not definitely kill cryptosporidium unless you combine treatment with proper filtration. Not Recommended for people with sensitivity or allergy to iodine.