Nope - the pharmacist was simply doing her job in accordance with UK law.

From DEFRA:

Pharmacists must not otherwise supply human medicines over the counter if they are intended for animal administration, even where oral authorisation from a veterinary surgeon has been given – a written prescription is required

The girl would have lost her job, simple as that.

So it isn't Tesco or any other pharmacies fault - if you want to moan at someone then send a letter to the government.

I took Lily to see the vet this morning as she was in pain with her tummy problems and was feeling sick and being a weekend and knowing how Lily goes I thought it best to get her checked, especially as she even refused a little chicken. I had already given her pro- kolin, Antepsin and Zantac liquid first thing this morning.
By the time we got there Lily was looking a little happier. The vet examined her and said she was tense in her tummy and still feeling sick, however she could not give her a shot of serenia to stop the sickness as Lily reacts badly to it and she was dubious about trying another one as we don't know how Lily would react to that, so I said i would rather not.
While there I got her to check Lilys eyes as she has been rubbing at them for some time, they were fine and I got her anal glands emptied.
She gave me 30 more tramadol as she said Lily can have those for her tummy pain and to keep up with the pro kolin, the Antepsin and if Lily didn't like the Zantac liquid to go to Tesco and get it in tablet form. She wrote strength and dosage on one of her cards for me.
For all this my bill come to £17 so I was very very pleased with that.

I then went to Tesco to get the Zantac and the assistant said they had a Tesco version , which the vet said she could have, for £1.25. So i said i would have 2 packs of them. As the assistant was ringing it up on the till, she noticed my vet card with it all written on and asked if it was for an animal. I told her my vet had told me to come and buy it for my dog and the stupid assistant then refused to sell it to me . So I said well i will say its for me then but she told me I was too late , so i said i would come back and get it later for myself and she said don't bother coming back while I am here today as I won't sell it to you.
To say I am peed off is an understatement. What difference does it make to them, its not a dangerous drug, and the vet had written down to get it. She was such a jobsworth

Its not Tesco thats at fault here, its the vet for not dispensing the correct drug, by prescription.

Tesco will always comply with the LAW.

So next time you get refused anything 'medical' whether pharmacutical or Optical, just remember its not the 'jobsworth' little girls fault, they are complying with the LAW.
I work in this industry and I wont deviate from the law as I will, personally, be fined £16,000.