My 6-week puppy has worms. Is WormX safe without knowing her weight?

Hello and thank you for your questions about Rosie.

Congrats on adding her to your family! She is super cute!

I recommend to have her examined by the veterinarian tomorrow. Bring in a sample of the stool and the worms. Pets can have several types of worms as well as coccidia. Some of these parasites can spread to humans so it is not only important that the correct anti-parasitic is given but implementing strict hygiene and cleaning is also needed. Here is some excellent information:
https://www.petcoach.co/article/can-people-get-worms-from-their-pets/

I don't recommend to give this medication without an accurate weight. It is easy to over-dose medications without the correct weight and this could make Rosie sick.

Alternatively, you should purchase a deworming medication that is safe for 6 week old puppies and can be safely dosed for smaller sized puppies. It is very important to follow label instructions on very young and very small puppies. Look for a liquid medication as this will be easier to give than a pill. And Roxie still needs to be examined regardless of if you deworm her.

Here is information about giving a pill if she will not eat it in a pill pocket or small meat ball of canned food (once you have the correct dosage, any chewable pill can be cut up or crushed). Do not cut or crush a non-chewable pill:
https://www.petcoach.co/article/how-to-give-your-dog-a-pill/

I hope this helps and please feel free to post any additional questions.