Taking it to your vet: what to ask

A vet visit is the most useful next step, and you do not need to know any special words first. This page explains why the vet matters, gives you questions to bring, and ends with a small glossary.

Why does it have to go through a vet?

Short answer: Under federal law, prescription medicines for animals may only be handed over by a licensed vet, or on a vet's written or spoken instruction.

Before a vet can use a medicine off-label, the law requires a vet-client-patient relationship, often shortened to VCPR. It means the vet has taken charge of your dog's care and knows your dog well enough for at least a first diagnosis. It also means the vet can follow up if something goes wrong.

Under the federal rule, that relationship needs a recent exam in person, or a visit to where the animal lives. Photos, videos or an online form alone are not enough.

Can an online vet visit start that relationship?

Short answer: It depends on which rule applies.

For off-label prescribing, the federal rule says video or photos alone cannot create it.

States have rules of their own, and they differ. Texas does not allow it by phone or other electronic means alone, while California has allowed a live video call since January 1, 2024.

Your own vet will know the rule where you live.

What will help at the appointment?

The product itself, its package, or a clear photo of the label.
A written list of everything your dog gets, including supplements and anything that came from a website.
Notes on what you have noticed, and since when: eating, walking, sleep and mood.
Your questions, written down, so none get lost in the moment.

Questions to ask the vet

Pick the ones that fit. There is no need to ask them all.

Is this medicine FDA-approved for dogs, or is it a compounded, pharmacy-mixed medicine that is not FDA-approved? The FDA itself suggests asking this.
If it is compounded, could an approved animal or human drug with the same active ingredient be used off-label instead?
What is the approval number on the label, and can we look it up together?
How will we know it is working and not doing harm? Which tests come before starting, and which come later?
Could it clash with anything else my dog takes, or with a health problem my dog already has?
Which signs mean I need to call you right away?
Are there other options we could try instead?
If it is compounded, who will make it, and will the label show my dog's name, a use-by date and a line saying it is not FDA-approved?
Was this tested in healthy dogs before approval, the way approved dog medicines are?

How much to give, and how often, is always the vet's decision. This guide never gives amounts.

How can I check an approval claim myself?

Short answer: Look on the label for the words "Approved by FDA under NADA" or "ANADA", followed by a six-digit number. NADA stands for New Animal Drug Application, the FDA file for a brand-name animal medicine, and ANADA is the file for a generic.

That number can be looked up in the FDA's free database, Animal Drugs @ FDA.

Some things on a label look official but prove nothing about approval. One is an NDC number, a listing code that unapproved drugs can have too. Another is a line saying federal law limits the drug to use by a vet, which unapproved drugs must carry as well. A third is the words "made in an FDA-registered facility".

What about puppies?

The research behind this guide found nothing specific about puppies and these peptides. Young dogs are still growing, so that gap is worth raising with your vet.

Words you may hear

Here are some words that come up, in plain terms.

Amino acid: One of the small building blocks that link up to make peptides and proteins.
Peptide: A short chain of amino acids. The word alone says nothing about quality or approval.
FDA: The US Food and Drug Administration, the agency that decides which medicines can be sold for people and animals.
Approved animal drug: A medicine the FDA has reviewed for a named use in a named species. Its label carries an NADA or ANADA number.
Off-label use: A vet using an approved medicine in a way the label does not list. Only a vet may decide on this.
VCPR: Short for vet-client-patient relationship: the vet knows your dog from an exam, takes charge of its care and can follow up.
Compounding: A pharmacist or vet mixing or changing ingredients to make a medicine for one animal.
Raw powder (bulk ingredient): An active ingredient before it has been made into a finished medicine.
Research use only: Small print some sellers add to say a chemical is for lab work. It does not decide what a product is in the eyes of the law.
Lab dogs: Dogs bred for research, usually healthy and kept under set conditions, rather than pets living at home.
Antibody: A protein the immune system makes to mark something as foreign.
Collagen: The tough material that holds skin, joints and other tissue together.
Use-by date: The date after which a pharmacy-mixed medicine is not meant to be used. Labels may call it a beyond-use date.
NDC number: A product listing code. Unapproved drugs can have one too.
NSAID: Short for non-steroidal anti-inflammatory drug: a family of medicines that ease pain and swelling.