Both my GSDs take these with no problem. I've been using these for about 6 years and have never had a problem with worms.

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Product details
Brand: Cestem
Cestem Large Dog Flavoured Worming Tablets are a palatable, broad-spectrum oral wormer containing febantel, pyrantel and praziquantel to treat common gastrointestinal roundworms and tapeworms in dogs weighing over 17.5kg up to 70kg.
The divisible liver-flavoured tablets can be given directly or with food, with accurate dosing based on your dog's body weight and treatment intervals advised by your vet.
For small dogs use Cestem.
Use 1 Cestem tablet per 18-35Kg of body weight.
Key Features:
- Treats roundworms, hookworms, whipworms and tapeworms, including Echinococcus and Dipylidium caninum
- Contains febantel, pyrantel and praziquantel for broad-spectrum internal parasite control
- Liver-flavoured and divisible for easier administration, with or without food
- Suitable for routine worm control, with adult dogs typically treated every 3 months as advised by a veterinary professional
Legal Category:
NFA-VPS | Cestem Tablets for Large Dogs
MPN: DSPN231
All reviews
Easy to administer- dog ate it happily
I haven’t used this yet but have previously, hence buying again. It’s the only wormer that doesn’t make my dog sick. They’re not too easy to give my dog as he’s very picky and even hiding it in treats he finds it and spits it out so I’m afraid he has to have it pushed down his throat, but the shape of them makes this easier. I won’t buy any other now!
We have been using these for years and our dogs have never had a Problem with worms
