Whilst the electronic copy of a prescription carries the dosage instructions, the paper copy, which is used for actually dispensing the medication, does not.
It is, he explains, like a medicine that is not used in any dosage because it is deadly in large doses.
That could enable firms to keep their products patented for longer by tweaking dosage or delivery methods.
Doctors admit they have reached the limits of effective dosage with chemotherapy.The lobbying of Mrs Pryce and other parents is bearing fruit.
Now growers in some places are having to increase dosage substantially, suggesting that spraying could soon become not just pricey, but ineffective.
Marinol is also expensive, at $10 a tablet (normal dosage is two tablets a day), and is not covered by health insurance.
"Just as people who are ill don't grow their own penicillin from mouldy bread," wrote Mr McCaffrey, "individuals can't guarantee the purity and dosage of THC by growing crude marijuana .Marinol has its drawbacks, however.
The government has allowed the residents of some evacuated municipalities to return to areas where the annual dosage is 20 millisieverts (ie 20 mSv) or below, pending further efforts at decontamination.
