(Virbac) Rilexine Chewable Tablets for Dogs contain the antibiotic cephalexin in a palatable, liver-flavored chewable tablet. Scored chewable tablets were developed as an alternative to bitter tasting cephalexin capsules, which can be difficult to administer. Rilexine Chewable Tablets are used in the treatment of superficial bacterial pyoderma (bacterial infection of the skin) and urinary tract infections in dogs. The recommended dose is 10 mg per lb. body weight twice daily for 28 days. Rilexine use in dogs intended for breeding and pregnant or lactating bitches has not been evaluated. Cephalexin.