HCG, B12 and Lipotropic Shots: What the Labels and the FDA Say

HCG shots for weight loss have something almost no other product on this site has: their own drug label says they do not work. HCG is FDA-approved as a prescription drug, for female infertility and certain other conditions — and the approved labeling states there is no substantial evidence that it increases weight loss beyond what calorie restriction achieves on its own.^[1] Not a critic’s claim. The prescribing information for the drug itself.

What the label says

There is no substantial evidence that it increases weight loss beyond that resulting from caloric restriction, that it causes a more attractive or “normal” distribution of fat, or that it decreases the hunger and discomfort associated with calorie-restricted diets.

— HCG prescribing information, quoted by FDA

Read the three clauses. It does not add to the weight loss. It does not change where fat comes off. It does not make the diet easier to tolerate. Those are precisely the three things HCG diet programs sell, refuted individually, on the drug’s own label.^[1]

FDA is equally direct about the status: HCG is not approved for use without a prescription for any purpose, and it is not approved for weight loss at all.^[1] Products sold as drops, pellets or sprays are therefore unapproved drugs regardless of what is in them.

Where the weight actually comes from

These products are sold in connection with a very low-calorie diet — typically 500 calories a day.^[1] That is the part that works, and it is also the part that is dangerous.

The FDA official quoted on its own consumer page puts it plainly: the products are marketed with incredible claims, people think that if they are losing weight the HCG must be working, and the data do not support it — any loss is from severe calorie restriction, not from the HCG.^[1]

An inert injection paired with a 500-calorie diet produces weight loss. The injection then gets the credit.

Why this matters on a site about GLP-1s

Because the same clinics sell both. HCG, lipotropic injections and B12 shots are the standing menu at a great many weight-loss clinics, and GLP-1 prescribing has been added to that menu rather than replacing it. Someone going in for semaglutide is frequently offered the rest.

It is also a useful calibration. If a clinic is selling something whose own label refutes the claim being made for it, that tells you something about how the rest of its offering was chosen. Our verification guide covers what to check, and the FDA warning letters page tracks who the agency has written to.

B12 and lipotropic shots are a different question

These usually get named in the same breath and they do not deserve the same verdict, so it is worth separating them.

• B12 corrects a B12 deficiency. That is real and worth having if you are deficient — and deficiency is genuinely more likely on a GLP-1, which is why our deficiency article lists it among the things worth measuring. Correcting a deficiency you do not have does not cause weight loss.
• Lipotropic injections are typically mixtures of methionine, inositol and choline, sometimes with B12. We did not find regulatory findings or trial evidence establishing weight loss from them, and an absence of evidence is what it is — not a refutation, and not a reason to pay.
• Neither is HCG, and neither carries a label refuting its own marketing claim. Lumping them together would be unfair to two of the three.

The practical test is the same one that applies to anything sold beside a GLP-1: ask what the claim is, and ask where it was demonstrated. For HCG that question has an unusually clear answer.