The phrase "are not prescribed" is correct and usable in written English.
It can be used in contexts where you want to indicate that something is not officially recommended or mandated.
Example: "The guidelines state that certain treatments are not prescribed for patients with specific conditions."
Alternatives: "are not recommended" or "are not mandated".
Antidepressants and antianxiety medications, commonplace in civilian life, are not prescribed for soldiers, for example, at least in the early stages of their treatment.
It is particularly dangerous for men with heart conditions - who are not prescribed the drug - due to possible cardiovascular side effects.
In some parts of the world, such as areas of Germany, India, and the Philippines, speed limits traditionally are not prescribed.
They are not prescribed for men who take nitrate drugs for angina pectoris, as chemical interactions between the two medications may cause a dangerous drop in blood pressure.
Where you live has a profound effect on how much attention your doctor gives you, how many days you spend in the hospital, and what drugs you are (or are not) prescribed.
Sales of legal, largely unregulated steroid precursors like andro have soared among the young, according to recent Congressional testimony by doctors and officials in the supplement industry, prompting a move in Congress to have them treated as illegal drugs when they are not prescribed.
"But if you're a research vessel and you go to the areas which are not prescribed, you see a very different picture," she said, adding that corals will face an even greater challenge in the years ahead because carbon emissions are lowering the water's pH.
It's not an isolated case: Many older generic drugs are not prescribed for all the diseases they might treat.
The cross-correlations between spike trains are a consequence of the different implementations of the time-dependent firing rate and are not prescribed a priori as in [42, 44, 45].
Homeopathic medicines are not prescribed based on the person's diagnosed disease but on the unique way the person experiences his or her disease.
The fact is that the government's own statistics show most people start misusing prescription pills that are not prescribed to them.
