How Much Does Solensia Injection Cost? These are the medication charge, administration charge, required examination fee, and full amount due on a routine injection date. Owners comparing this treatment with a canine monthly injection can review the billing structure in the Librela injection cost article, but the drugs, species, doses, and clinic charges are different. Verified the related monthly injection billing model without treating canine pricing as a Solensia quote. Answers to Common QuestionsHow much is one Solensia injection?