Label says chlorine Dioxide 2%

No, I wouldn't waste my time, it would be too weak. That is often the strength of camping water purification drops, but for health uses you need at least 25%. Also look at the activator, it's different. If you only need it for water purification or disinfection of surfaces it will be fine (Ive used 2% strength for that before), but anything else...I wouldn't bother unless I had no other option.