Sermorelin side effects: what sellers disclose, and what they don’t
By Ray Kaminski, who covers specialty pharmacy pricing and compounding economics.
Updated September 4, 2026.
Twenty-two of ninety sermorelin sellers name a specific side effect somewhere a reader can see it without clicking. Forty-nine never raise the subject at all. The rest ask the question — “What are the side effects of sermorelin?” — as a collapsed FAQ heading and put the answer behind the click.
So the honest starting point is that the page you are buying from probably will not tell you. Here is what the ones that do say, in their own words.
What the sellers who disclose actually list
Scroll the table sideways for the remaining columns.
| Seller | Effects named, verbatim |
|---|---|
| BMIMD | “Common side effects: Pain, redness, or swelling at the place of injection. Rare side effects: Itching, trouble swallowing, dizziness, flushing, headache, sleepiness, trouble sitting still” |
| Invyncible | “Injection-site redness, discomfort, swelling or irritation; Headache; Flushing; Dizziness; Nausea; Fatigue; Fluid retention or swelling; Allergic reactions” |
| MadeMed | “Pain, redness, swelling, or itching at the injection site; Headache or dizziness; Flushing; Nausea or vomiting; A temporary change in taste; Sleepiness or hyperactivity” |
| Ivy Rx | “redness, swelling, or pain at the injection site, headache, flushing, dizziness, or mild nausea” |
| Vytora Health | “injection-site reactions (redness, swelling, or discomfort), flushing, headache, dizziness, and nausea… Some patients may experience fluid retention, especially early in treatment” |
| Garcia Weight Loss | “reactions to injection site, and less than 1% of patients report dizziness, headaches or hyperactivity” |
The overlap is consistent enough to be worth naming: injection-site reactions, headache, flushing, dizziness and nausea appear on nearly every list that exists. Fluid retention and a change in taste appear on some and not others.
The one number, and why we don’t repeat it
Garcia Weight Loss is the only seller of the ninety that attaches a rate to anything: “less than 1% of patients report dizziness, headaches or hyperactivity.” Its page carries no source for that figure, and does not say which patients, over what period, or how it was counted.
We have no verified incidence figure for any sermorelin side effect and we are not going to print one we cannot source. If you see a percentage on a seller’s page, ask where it came from.
What the drug is, which is why the list looks like this
Sermorelin is an analog of growth hormone–releasing hormone. It acts on the pituitary to prompt the body’s own growth hormone release rather than supplying growth hormone directly. [needs citation] Most of the effects above are the ones you would expect from any subcutaneous injection — the reaction at the injection site — plus a short list of systemic effects.
There is no FDA-approved sermorelin product marketed in the United States, so there is no approved label carrying an official adverse-reaction table. [needs citation] Thirty-seven of the ninety sellers state on their own pages that what they dispense is compounded and not FDA-approved; the FDA does not verify the safety or effectiveness of a compounded drug the way it does an approved one. [needs citation]
What is missing from all ninety pages
No page we read publishes a contraindication list of any depth, an interaction list beyond a passing mention, or a serious-adverse-event discussion. One seller mentions corticosteroids and thyroid medication specifically. Twenty of the ninety mention IGF-1; twenty-three mention lab work at all.
That is a description of what these sellers publish, not of the drug’s safety profile. The absence of a warning on a marketing page is not evidence there is nothing to warn about.