Updated On January 8th, 2020
Pet's info: Dog | Shih Tzu | Male | neutered | 10 years and 8 months old | 14 lbs
Answered By Angel Alvarado, LVT 44
Licensed Veterinary Technician
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It is not recommended since the combination can increase side effects such as lethargy/drowsiness or confusion. In s senior pet, this could be risky. Contact your veterinarian in the morning to discuss your concern further as well as options. If Winston is having a severe allergic reaction, consider a visit to the nearest veterinary ER.
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