And – if I understood that correctly – that prophets may have made errors ant a final prophet which is sent directly from heaven (instead of chosen from men) will correct them. So plotholes in the written text are accepted as a misunderstanding between the words of god and the human prophet who reads and interprets them.
The laxative properties disappear after a while (a few weeks). Our body accommodates for it so that 200g per day are no big problem anymore.