having, for example, been prescribed a drug at a dosage too low to be effective or having been

having, for example, a drug prescription that was ineffective because the dosage was too low, or being

as, for example, having too low of a dosage of a prescribed drug for it to be effective, or being

when they have, for example, been prescribed too low a drug dosage for it to be effective, or were

for example, when they have a drug prescription with a dosage too low to be effective, or been