Skip to the text Start Names & status Tissue repair The briefings Costs Questions Cautions briefing # Keep the unknowns in view. Find out what is known about the particular product on offer. A reassuring label does not answer every question. Cautions file · facts dated September 17 and September 26, 2026. In this briefing - Some ingredients leave key questions open - Preparation can change what is in the product - Use the product’s own storage directions - Treat severe allergy as an emergency - A medicine problem can be reported ## Some ingredients leave key questions open The Food and Drug Administration (FDA) is the US drug regulator. FDA warns that certain peptide ingredients can clump or contain unwanted material, which may cause the body to react as if an invader is present. For BPC-157, FDA said it lacked enough information to know whether the proposed uses would harm people, in information checked September 26, 2026. ## Preparation can change what is in the product To compound a medicine is to make it up for a patient’s needs. FDA says poor preparation can leave a medicine with unwanted material. The active ingredient may end up above or below its intended amount. In letters to peptide sellers, FDA explained that injected products can get past defenses that normally block germs and toxins. ## Use the product’s own storage directions Peptide medicines do not all need the same storage. Ask for the directions for that product. Ask the dispensing pharmacist to explain the label, storage and what to do if the delivery seems wrong. If pregnancy or breastfeeding is relevant, ask for advice about the exact proposed product. For a compounded medicine, there is no matching FDA-reviewed advice about use during pregnancy or while breastfeeding. ## Treat severe allergy as an emergency MedlinePlus, a US National Library of Medicine information service, describes severe allergy as an emergency. MedlinePlus lists face or tongue swelling, trouble breathing or swallowing, and passing out among the symptoms. MedlinePlus calls for immediate emergency-room care or an emergency call to 911 when symptoms are severe. ## A medicine problem can be reported MedWatch accepts reports from patients. It is FDA’s system for reporting problems with medical products. A report alone cannot prove what caused the problem or how often it occurs. Open the FDA reporting form ## Keep a question from this briefing Write something to take into the conversation. Your note for this page Saved notes stay in this browser. This box sends nothing to the site. Save note here Clear saved note Saving notes needs JavaScript in this browser. ## Endnotes for this chapter - FDA: concerns about peptide ingredients The ingredient-specific uncertainties. - FDA: quality in compounding What poor preparation can change. - Medicine label: storage directions This label gives its own storage rules. - MedlinePlus: severe allergic reactions The urgent-help guidance. - FDA: the MedWatch service How patients can report a problem. - FDA: limits of problem reports Why reports do not establish cause or a rate. Return to the orientation Tissue repair, read closely. Start here Names & status Evidence Getting care Costs Cautions License checks Questions These briefings help frame care questions. This site operates no clinic and sells no medicines.