Precedence should be given to diagnoses and treatments supported by scientific proof. Anecdote cannot establish such proof. Discussion should include guidance for referral, if necessary. Unproven therapies may also be suggested, but they should not be the only options discussed when proven-effective treatment exists. Where unproven therapies are offered to promote the welfare of an otherwise healthy animal or where they are used in the treatment of a condition where the animal is not at risk of harm should the therapies fail to be effective, the true benefits to the animal should be established by scientific investigation.
Clients usually choose a medical course of action on the advice of their veterinarian.
To provide good advice veterinarians should be well informed. Recommendations for effective and safe care should be based on the best available scientific knowledge and the medical judgment of the veterinarian. Recommendations should help the client distinguish between medical fact, assumption, and myth. Veterinarians should uphold the principle of informed consent. They should make clients aware of potential risks and benefits of therapies.