We use lipo mostly (but also Theranaturals caps too depending on convenience @ 30 mg./lb.) We have found you need less lipo in terms of mg. We do about 10 - 20 mg. per pound of 1 or 2 t per day depending on the situation. (Also do inhaled, and NAC supplement)
I would call Dr. Guilford and see what he is seeing with CF lipo users - he is really interested in hearing from CF users. http://guilfordmd.com/index.html