@CarrieErbag
Much to my horror, my 16 year old dc was given Prozac when show went to the GP about anxiety amongst other things. (The pharmacist told her to 'read the leaflet very carefully before deciding whether to take them')
You are absolutely right though about the NHS not being fit for purpose re adolescent mental health, we are currently waiting to see a private psychologist.
We had the opposite problem. It was obvious my son had two conditions that respond best to medication
and adjunct therapy. The NHS was not willing to treat him medically to adequate extent and, of course, there was a long wait list for these psychological treatments

. So the person is supposed to suffer? Fuck that. So we went private (there should not be much of a wait) and then the GP tried to obstruct the consultant's instructions and gainsay her prescription! The cheek of him, after leaving us with nothing. Excuse me, but you're a GP, not a child psychiatrist. My son now has both psychiatric and psychological treatment and is doing incredibly well, but imagine how many lives are ruined, made miserable and even possibly cut short by the total incompetence in this area! Needless to say, we changed GPs.
Incidentally, the scaremongering about drugs like Prozac is really silly and unnecessary. It's been used for a long time, is licensed for many things and can be used safely by 16-year-olds (and younger). The pharmacist needs reported. It's one thing to advise reading the leaflet, it's quite another to tell a person to ignore the doctor's advice! FFS.
I've had nosy pharmacists like this. Look, a fucking consultant prescribed this, it is not for you to lecture a person! Report. Tell the consultant, too. They have a cheek in this country, IMO. Of course, you can't say a word against them or the NHS here - they're all heroes who just care about the patient and have a risky job and never have their own agenda to push. Of course not! Not a chance! 
There's no medal of valour for needlessly suffering. It's stupid.