So the goal of HTS isn't necessarily to make you cough.... but rather to hydrate your airways.
So although 7% will probably do a better job hydrating, keep in mind that the sign of effectiveness isn't necessarily the coughing at the time of administration. <img src="i/expressions/face-icon-small-smile.gif" border="0"> getting up more gunk later is a great sign, however <img src="i/expressions/face-icon-small-smile.gif" border="0"> <img src="i/expressions/face-icon-small-smile.gif" border="0"> <img src="i/expressions/face-icon-small-smile.gif" border="0">
So although 7% will probably do a better job hydrating, keep in mind that the sign of effectiveness isn't necessarily the coughing at the time of administration. <img src="i/expressions/face-icon-small-smile.gif" border="0"> getting up more gunk later is a great sign, however <img src="i/expressions/face-icon-small-smile.gif" border="0"> <img src="i/expressions/face-icon-small-smile.gif" border="0"> <img src="i/expressions/face-icon-small-smile.gif" border="0">