Have Cat Questions? Ask a Cat Vet Online.
Thanks for your question. My name is Rebecca; I am a veterinarian and will do my best to help.
It should be safe to give these close together, but give me a moment to research this to be sure.
OK, it appears that these contain some of the same ingredients. They would probably be safe to give together, but the best recommendation is to give them 3 days apart.
More research: wait 2 to 3 days between them.