• After several months we decided to restart our 50lb Golden Doodle on Simparica as the tick season is starting up. We noticed the box we have expired in April but figured a few days shouldn't matter. After dosing we realized it was 2018...1 year out of date. Will it still work? I don't want him to get ticks or fleas but also don't want to overdose on tick meds.

    Hi Stephanie,

    I recommend that you call and talk to your local veterinarian about this question. It is best to not use expired medications. The risk of doing this in your individual pet will depend on a few different factors including his age and overall health. Your vet knows your pet and they can give you the best advice on this.

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