I accidentally gave my puppy a double dose of metronidazole.

• Species: Dog • ⁠Age: 15 Weeks • ⁠Sex/Neuter status: Male Intact • ⁠Breed: Labrador Retriever • ⁠Body weight: 16 lbs • ⁠History: NA • ⁠Clinical signs: NA • ⁠Duration: NA

I accidentally gave my dog a double dose of metronidazole.

He has Gardia and this was his first dose that I gave him.

He was supposed to get 1/2 tablet of 125mg.

I accidentally gave him 1 full tablet of 250mg.

What are any steps I may need to take?