Moses had this medicine (6)
I believe the answer is:
tablet
'this medicine' is the definition.
(tablet is a kind of medicine)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for tablet that I've seen before include "Stone slab; pill" , "Handheld personal computer" , "Small bar of soap" , "Let bat provide a pill" , "Pill; writing pad" .)