Guinness's prescriptions were due.

Best I could get was
Vetmedin Capsules (which are still available despite my vets advice) 2.5mg £31.45 for tub of 100 - or 32p each
from medicines4yourpet

Fortekor flavor 5mg - 69p each
from vetuk

Frusemide 20mg - 2p each
from medicines4yourpet

Took these prices and got a further 5% off from Petmeds.

well pleased