Hi Lesley,
I get most of my stuff for the animals from Crossgates Farm (the wormers are no's 89 and 90 on here..
http://www.crossgatesfarm.co.uk/pages/remedies/remedies.html ) as they do them in spray form which I find easier than tablets for the cats and cows (the cats actually hate the spray but I spray their food as it's easier than giving them tablets) The dog is fine with the spray although she's OK with tablets too. They do tablets at Crossgates but I'm not sure how their price compares to other places but this tells you the price and approximately how many doses in each bottle..
http://www.crossgatesfarm.co.uk/pages/shop.htmlThe wormer for the dog is labelled "Nos BIM (some sort of nosode I think) and Abrotanum 2x" but I haven't used it yet so can't say how good that is. The instructions for that are 3 doses a day for 7-10 days and Crossgates advised me to follow up with Calc Carb 200c 1 a week for 4 weeks. I've done some reading up since I bought them and the Abrotanum is recommended for roundworms (same dosage but 2x potency for older dogs and 3x for puppies) and the Calc Carb at 200c for tapeworms (though I've read this may only work as a preventative by making the animal less susceptible and that a chemical wormer may be needed first if tapeworms are a problem).
The wormer for the cats was different (a mixture of 7 remedies)...twice daily for 30 days!! thanks heavens I didn't have to struggle with the tablets :D
Kath.