Yes I agree with the above post by CLKD.
I worked as a Pharmacy Dispenser for many years and only retired last year.
The amount of wastage on the NHS for unused items was mind-blowing.
We had literally huge bags and bags of meds collected every week for destruction. Most of it completely un-opened.
But it cannot be given to anybody else at all, or used in another "desperate" country.
This was all mainly due to people simply saying "Oh Yes, tick everything on the repeat slip and I'll have it all". When in reality they had stopped using some items.
Also, when people got 3 - 6 months supply of meds, over the next few months they may stop using those meds (for whatever reason) and then the surplus was wasted. And of course the sad situation where somebody had just got maybe 3 months supply of meds and sadly died.
So the GP's now do 1 month supplies, as a rule, to try to combat this with the hope that when people have to phone up/go into a pharmacy/order on-line etc etc they will just get used to only ordering what they are still actually using.
The time and expense of administering repeat prescriptions is absolutely tiny compared with the billions wasted every year on un-used meds.
Having said that...in some cases the doctors do still sometimes agree to give larger supplies. So its always worth speaking to them on an individual basis.
Definitely for example, if you are going away on holiday etc, then you can get a few months supply in advance.
And of course its always cheaper to have a Pre-Pay certificate if you are getting more than 13 items per year. The Cert costs £104, which works out at just over £8.50 per month.
Hope this helps and that I have explained myself ok? xx