I copied and pasted this information, it was written by a top Lyme specialist. Interesting for those of us on abx. 'The bad taste from clarithromycin use is a reflection of the blood and tissue level of this med- it is not caused by the taste of the tablet itself. Because it loosely reflects the tissue levels, the taste is an important clue for clinicians. If there is minimal taste, then a higher dose may be needed. If the taste is strong and persists all day, then perhaps a lower dose would suffice.'