from toothpaste? I looked up the ingredients on Pro-Namel
and one of the two active ones is potassium
nitrate and the other is flouride. Apparently, potassium nitrate should not be inhaled, etc. as it could case ------ yep, coughing and breathing difficulties! What has the FDA said about this? Apparently they approved it, but the FDA's history has been checkered. I guess user beware needs to be the slogan of the day here.