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Felisyl Immune System Support

Felisyl Immune System Support (3.5 oz) by Pet Health Solutions is a brand new nutritional supplement that is safe and effective for conditions responsive to Lysine. L-lysine reduces the severity and frequency of herpes simplex viral infections which are also known as cold sores or fever blisters.

  • Recommended as an aid in the treatment of Feline Herpes Virus and its associated respiratory and ocular symptoms.
  • CALL IN YOUR ORDER 800.889.9475