In this guide
Key takeaways
- The FDA lists blindness, tumors, infections, neurological events and immune reactions among the harms reported with unapproved regenerative products.
- If you have warning signs such as fever, spreading redness, vision changes, new weakness or trouble breathing, get medical care first. Paperwork comes second.
- Leave the clinic with a written record of exactly what you received: product, source, lab, batch, dose, route and injection sites.
- In the US, anyone can report a problem to the FDA through MedWatch. In Colombia, INVIMA's pharmacovigilance page links an online reporting form, and it also runs citizen complaint channels.
- Reports matter because there's no complete public registry of outcomes from commercial stem cell treatments.
This is the article nobody wants to need. Still, it belongs in any honest guide to stem cell treatment abroad. Serious complications from unproven cell treatments are documented in the medical literature, and when they happen, patients are often in a hard spot. The clinic is in another country, their home doctor wasn't involved, and nobody has a record of what was injected. A little preparation before treatment, and a clear plan if something goes wrong, can make a real difference.
What can go wrong
The FDA's page for patients considering regenerative medicine therapies lists harms that have been reported with unapproved products:
Blood and bacterial infections
These can come from contamination during processing or from infectious disease in donor material that wasn't tested.
Inflammatory or immune reactions
Unwanted reactions to the cells or other materials in the product
Tumors or unintended tissue
Cells forming the wrong tissue type or overgrowing where they were placed
Neurological events and blindness
Especially with injections near the eye, spine or brain
The most cited case series involves three patients who developed severe vision loss in both eyes after a US clinic injected fat-derived “stem cells” into their eyes for macular degeneration. A year later, their vision ranged from 20/200 to no light perception (Kuriyan et al., NEJM 2017). A 2018 review in Stem Cells Translational Medicine pulled together adverse events reported in journals, case reports and the media. The authors pointed to “stem cell tourism” as part of the problem (Bauer et al., 2018).
For a fuller picture of how often milder effects such as soreness, swelling or a short-lived fever appear in published studies, see what published safety data shows. Most people have only minor, short-lived effects. This guide is about the cases that aren't minor.
Warning signs that need care now
We can't give individual medical advice, and nothing here replaces a doctor. But these general warning signs after any injection or infusion are reasons to get medical attention promptly instead of waiting to see what happens:
- Fever or chills, especially with worsening pain at an injection site
- Redness, heat or swelling that spreads, or any discharge from a puncture site
- Any change in vision, or new eye pain
- New weakness, numbness, severe headache, confusion or trouble speaking
- Shortness of breath, chest pain, or a racing heart after an IV infusion
- Severe back pain, or new problems controlling your bladder or bowels after a spinal procedure
If you're still in Colombia, call the clinic's emergency contact and go to a hospital emergency department if symptoms are severe. If you're home, go to urgent care or the ER and tell them you received a cell product abroad. Bring or forward your treatment records. That detail can change which tests they run.
The paperwork to collect before you leave the clinic
Doctors treating a complication need to know what was put in your body. Many patients only realize afterward that they have a receipt and a smiling discharge photo, not a medical record. Ask for these before you pay, and confirm you have them before you fly:
- Product detailsThe product name, cell type and source (for example, umbilical cord tissue, your own fat or bone marrow), and the lab or tissue bank that produced it
- Batch documentationThe lot or batch number and the release testing for that batch, often in a certificate of analysis. See what a certificate of analysis should show.
- Procedure noteThe dose given, the route (IV, joint, spine, other) and exact sites, any imaging guidance used, and any medicines given alongside
- People and contactsThe treating physician's full name and registration, plus a 24-hour contact who answers after you leave the country
- Your signed consent formA copy of what you agreed to, including the risks the clinic disclosed. Our guide to informed consent for experimental treatment explains what it should contain.
Many patients skip this out of worry their doctor will disapprove. But a doctor who knows in advance can record a baseline, flag medicines that matter around treatment, and recognize a complication faster if one appears. Even a short note in your chart saying where you're going and what you're receiving helps whoever sees you if something goes wrong. If your doctor raises concerns, that's useful input too. Our guide on getting a second opinion covers how to have that conversation.
A clinic that hesitates to hand over these records is telling you something. It's the same documentation a serious provider uses for its own adverse event tracking.
How to report in the United States
The FDA's MedWatch program accepts reports directly from the public, not just from doctors. You can file even if the treatment happened abroad.
| Option | How | Good for |
|---|---|---|
| MedWatch online | Use the “Report a Problem” link on the MedWatch page and choose the consumer report. | Reporting an injury or side effect after a cell, exosome or other biologic product |
| Your doctor files | Ask the physician treating the complication to submit a report too. | Adding clinical detail such as test results and diagnosis |
| Questions about a product's status | Email ocod@fda.hhs.gov or call 800-835-4709. | Asking whether a product is approved, or flagging a clinic's marketing |
| General FDA line | 1-888-INFO-FDA (1-888-463-6332) | Help finding the right channel |
Include as much of the paperwork above as you can, especially the product name, source and lot number. A report that says “stem cells in Colombia” gives investigators little to work with. A report with a product name and batch can be linked to others.
How to report in Colombia
Colombia's reporting system is set up mainly for health professionals and companies, but there are routes for patients too:
- Tell the clinic in writing. Email the treating physician with dates, symptoms and any diagnosis you received. Ask them to confirm that they've recorded and reported the event, and to tell you which channel they used. Keep the reply.
- INVIMA pharmacovigilance. INVIMA's online pharmacovigilance services page links a public reporting form (VigiFlow eForms for medicines) along with professional and industry systems. The page invites voluntary reports.
- INVIMA citizen channels. If you aren't sure the form fits a cell product, INVIMA's petitions, complaints and claims (PQRS) channel accepts complaints from citizens.
- Local health authorities. Colombia's departmental and district health secretariats register and supervise licensed providers, and under Decree 2493 of 2004 they share oversight of tissue banks with INVIMA. Contact the health secretariat for the department or district where the clinic operates.
A short, factual report in Spanish is easier for officials to act on. Include the clinic's name, the date, the product (producto), the lot (lote), your symptoms (síntomas), and the diagnosis from the doctor who treated you. A translation app is fine. Accuracy matters more than polish.
Why reporting matters, even months later
Regulators rely on reports to spot patterns, such as a contaminated batch, a lab with recurring problems, or a procedure that keeps causing the same injury. With approved medicines, manufacturers are required to track and report problems. With many commercial cell treatments, nobody has to compile outcomes, so a single patient's report may be one of the few records that exist. Our piece on patient registries and outcome tracking explains why that gap matters for everyone weighing these treatments.
Reporting also protects you. A dated report creates a record if you later need to discuss the problem with an insurer or a lawyer, or ask the clinic for help with follow-up care. If your problem started a while ago, it's still worth reporting. Late reports still add to the record.
If you're still at the planning stage, use this guide as a checklist of questions for any clinic: who your emergency contact will be, what records you'll get, and how they handle complications after you go home. A good provider has clear answers. To check credentials before booking, see how to verify a Colombian clinic and doctor.
Frequently asked questions
Can I report a side effect to the FDA if I was treated in Colombia?
Yes. MedWatch accepts reports from the public, and you can describe a product you received abroad. Include the product name, source, lot number and your doctor's diagnosis if you have them.
What should I tell an ER doctor after stem cell treatment abroad?
Tell them you received a cell product, when and where, the route (IV, joint, spine or other), and share any records you have, such as the product name, source and batch number. This helps them choose the right tests.
How do I report a problem to INVIMA?
INVIMA's online pharmacovigilance services page links a public reporting form, and its PQRS citizen channel accepts complaints. You can also ask the treating clinic to report the event and confirm which channel it used.
What records should I get from a stem cell clinic?
Ask for the product name and cell source, the producing lab or tissue bank, the lot number and its testing results, the dose, route and injection sites, the treating physician's name and registration, a 24-hour contact, and a copy of your signed consent form.
Is it too late to report a problem that started months ago?
It's still worth reporting. Late reports still help regulators spot patterns. Describe when symptoms started and what care you received.
Planning treatment and want a safety plan in place?
We can talk through your options, including the questions to ask any clinic about records, emergency contacts and follow-up care before you travel.
Talk through your options →Sources
- Important Patient and Consumer Information About Regenerative Medicine Therapies — U.S. Food and Drug Administration
- MedWatch: The FDA Safety Information and Adverse Event Reporting Program — U.S. Food and Drug Administration
- Kuriyan AE, et al. Vision Loss after Intravitreal Injection of Autologous “Stem Cells” for AMD. N Engl J Med. 2017;376(11):1047-1053 — PubMed
- Bauer G, Elsallab M, Abou-El-Enein M. Concise Review: A Comprehensive Analysis of Reported Adverse Events in Patients Receiving Unproven Stem Cell-Based Interventions. Stem Cells Transl Med. 2018;7(9):676-685 — PubMed
- Servicios en línea – Farmacovigilancia — INVIMA (Colombia)
- Decreto 2493 de 2004 (componentes anatómicos) — Ministerio de Salud y Protección Social de Colombia
This article is general information, not medical advice, and it does not replace an evaluation by a licensed physician who knows your history. Most stem cell treatments discussed on this site are not approved by the FDA or proven in completed clinical trials for the conditions they are marketed for; outcomes are not guaranteed and risks are real. Regulations and registry tools change, so confirm details with the official sources linked above. Colombia Stem Cell Treatment is an independent information site, not a clinic. If you ask us to, we may share your inquiry with providers, who may compensate our network for introductions; see our terms for details. No affiliate links appear in this article.