'prescribed amount' is a correct and usable phrase in written English.
You can use it when you want to refer to a specific, predetermined or fixed amount of something, whether it be money, medicine, or time. For example, "The patient must take the prescribed amount of medication each day."
Once done, the respective event positions may be shifted by the prescribed amount.
This has been shown to be quite effective at reaching a prescribed amount of pollution reduction.
I never took the prescribed amount because I didn't have much pain.
If the company fails to spend the prescribed amount, the board in its report is required to specify the reasons.
One day, she imagines, patients could receive a magnetic drug and spend a prescribed amount of time each day near a magnetic device.
If the medication doesn't seem to be working during the first phase of your treatment, your doctor may suggest increasing the prescribed amount.
Aim of the formulation is the minimization of the maximum equivalent stress in the underlying material, for a prescribed amount of fiber-reinforcement.
Dozens of court proceedings having to do with city shelters and their management followed, until details as small as the acceptable distance between beds and the prescribed amount of toilet paper in the bathrooms became the subjects of court orders.
Creativity and individual development have been lost to the delivery of a prescribed amount of reading, writing and maths based on schemes of work that may not relate to the individual learner.
Pledges made under the recent INDCs would have to be 150% greater on average for emissions in 2030 to be 49 Gtons CO2-eq/yr, which is the prescribed amount under the RCP4.5 scenario.
To save money, 20% took less than the prescribed amount of medication, 19% partially filled prescriptions, and 24% avoided filling prescriptions altogether.
