Here is an extract from folio 4r of MS Baroda 12489 (includes the Carakasaṃhitā), showing इति iti followed by a ह ha with a loop to the right of the glyph. A bit like the loop on the syllable ॐ oṃ. This is probably an abbreviation for the phrase इति स्माह भगवानात्रेयः iti smāha bhagavān ātreyaḥ that occurs as the second phrase in most chapters.
Here is the phrase from the next chapter, f.5v of MS Baroda 12489.
Baroda 12489 dates from AD 1816/17.
Scribal abbreviations are not as common in Sanskrit manuscripts as they are in medieval European ones.