Hi Lily cat &
to Purrs
Sorry to hear Imogen is poorly
I don't have any experience of heart failure but I do have lots of experience in giving tablets the 'sly' way! My cat Tiggy had well over 2000 tablets during the last 4 years of her life, only twice did I have to resort to 'reasonable force'!
For the last two years when she was having 5 tablets a day my main methods were 1 & 2 below (with no 2 being less sticky!), if she were feeling off colour I had to resort to one of the other methods. One of the tablets she had was Fortekor (for CRF not heart failure) so the tips definitely work with that shape/size of tablet.
1) Primula Cheese in a tube (Chs, Chs & Ham, Chs & Prawn but NOT chs & chive), also works with Dairylea triangles, laughing cow etc, just cut a small chunk off.. Place tablet on finger, squirt a blob of Primula on, Tiggy licked it off, tablet and all.
2 De-furrum treats (available from places like Pets at Home, Jollyes etc) they are designed for hairballs. When snapped in half there is a gooey mix which holds the tablet perfectly when you poke it in. Tiggy loved these and hoovered them up.
3) Wafer thin ham (Bernard Matthews is best as is nice and moist and sticks to itself when folded over). Wrap tablet in small parcel and hand feed, the tablet may fall out the first time so I roll up in another piece and keep going. Wafer thin Beef or Chicken is also effective.
4) Cheddar Cheese, experiment with varieties but the moister the better. Shave of a thinnish layer and squish around the tablet.
5) Chicken breast, don't overcook, needs to be nice and moist. Shave a thinnish layer and again squish around tablet.
6) Tuna, squeeze most of the juiceout and squish around tablet.
7) For powdered meds: Beef sandwich paste (check ingredients NO onion or garlic) mix with a little hot water to make a yummy beefy paste.