Best wormer and flea treatment for puppy?

[permaconfused]

Hello, 12 week tiny crossbreed. Hilarious and bitey but absolutely adorable.

She's due another flea and worm treatment next week. My older dog has oral stuff that's too strong for the little one, I can't remember what you do with puppies - I do remember that vet stuff is very expensive - so wondering if I can get something decent but reasonable elsewhere?

Thank you!

Anyone?

While she is growing, get Advocate spot on from the vet. Covers fleas and the main worms, just not ticks or tapeworm. Lasts a month and costs about £9-£10. When her weight has stabilised, get Bravecto and Milbemax from the vet every 3 months. The pet shop stuff isn't generally as strong as the prescription stuff.