Stem Cell Therapy Second Opinion — Free Evaluation from Our Medical Team

Why get a second opinion on stem cell therapy

Stem cell therapy is one of the most genuinely promising areas in modern medicine — and, at the same time, one of the most heavily marketed, with international clinics that range from outstanding to outright unsafe. The same patient can walk away from three different consultations with three different stories: one clinic saying surgery is the only path, a second telling them "we can fix anything with cells," and a third quoting a five-figure protocol that's hard to verify. A second opinion exists precisely to interrupt that pattern with a careful, named, written assessment that you can hold in your hand.

There are three reasons patients book a second opinion with us. The first is to avoid bad clinics — to have a licensed physician look at a quote, a protocol, or a website and tell them, honestly, whether what they are being sold is even biologically plausible. The second is to confirm candidacy — whether their specific diagnosis and imaging actually suggest a meaningful response to mesenchymal stem cells, exosomes, PRP, or one of the orthobiologic combinations we use. The third is to explore options — surgical vs. non-surgical, biologic vs. pharmacologic, or simply a less aggressive starting point that respects the principle of "first do no harm."

We built this evaluation as our primary way of meeting new international patients because, in our experience, no other format establishes trust as quickly. A 15-minute video call with a physician — not a sales representative — is a real medical conversation. You bring the facts of your case, we bring the clinical experience, and at the end you walk away with a clear, written answer about whether we believe regenerative medicine is appropriate for you.

Learn about our stem cell therapy program · Schedule the free evaluation

What we review in your second-opinion evaluation

A meaningful second opinion is only as good as the inputs. The more accurate, complete and recent the information you share, the more useful our recommendation will be. None of these items is strictly required — patients arrive with very different amounts of paperwork — but the more we can review beforehand, the more time the live call spends on you and the less on basic intake.

• Your current diagnosis. Whatever diagnosis you have received from a primary physician, specialist, or another clinic. We want both the formal name (e.g. "grade III chondromalacia patellae," "L4–L5 disc protrusion with right radiculopathy," "androgenetic alopecia, Norwood stage IV") and the clinical context: how it was diagnosed, when, by whom, and what the treating physician recommended.
• Imaging and laboratory results. MRIs, CT scans, X-rays, ultrasounds, blood panels, hormone panels, autoimmune markers — whatever is relevant to the condition. Imaging is especially valuable for orthopedic and spine cases because it tells us almost everything we need to know about whether a biologic is likely to help.
• Your current treatment plan. Medications, physical therapy, injections received elsewhere, surgical recommendations, supplements, lifestyle interventions, and anything you've already tried with or without success. We need to understand what has and has not worked before recommending a new direction.
• Previous stem cell or biologic quotes. If another clinic has sent you a proposal, please share it. We will review the protocol (cell type, dosage, route of administration, supplying laboratory, sessions, total cost) and tell you whether it is plausible, what it leaves unsaid, and how it compares to evidence-based practice.
• Your goals and constraints. What outcome would make this worthwhile to you — return to a specific activity, reduce pain by a specific amount, taper off a medication, regrow hair, recover from a chronic illness? And what are your real-world constraints — travel, recovery time, budget? An honest goals conversation is the difference between a useful plan and an unrealistic one.

Who should consider a stem cell therapy second opinion

If any of the following situations describe your case, a free second-opinion call with our medical team is probably worth your time. You don't need to have decided anything — most patients we speak with are still gathering information.

• You've been told you "need surgery". Surgical recommendations should always be examined in context. Many patients are told they need a knee replacement, a spinal fusion, or a rotator cuff repair when the imaging and clinical picture also fit a biologic, conservative, or staged approach. A second opinion clarifies whether surgery is truly the best option or simply the one that was offered first.
• You've been told you have "no options left". "Nothing else can be done" is a phrase patients hear more often than the evidence supports. Autoimmune disease, post-COVID complications, chronic pain syndromes, refractory tendinopathies, and many neurological and metabolic conditions still have meaningful avenues to explore — regenerative or otherwise. We will be honest about the realistic odds, but we will look.
• You've been quoted an extraordinarily high amount abroad. International stem cell quotes range from reasonable to extraordinary. If a clinic is asking you for an extraordinarily high sum for a protocol, please get a second opinion on both the price and the clinical justification before paying any deposit. Many of these quotes are not aligned with current evidence or with the cost structure of the underlying biologics.
• You want to compare clinics objectively. It's entirely reasonable to want a second clinic's honest read on a first clinic's plan — and vice versa. We do this often. We will not trash a competitor; we will tell you which parts of the plan are well-justified and which are not, and what we would do differently.
• You're considering autologous vs. allogeneic cells. Patients are often quoted a stem cell protocol without being clearly told whether the cells are their own (autologous) or from a donor source (allogeneic), where the allogeneic cells come from, and how dosage is calculated. A second opinion lays this out in plain language so you can make an informed decision.

Guide: how to choose a stem cell clinic

Red flags to watch for when evaluating a stem cell clinic

Part of what a second opinion does is teach you to read a clinic the way a physician would. Whether or not you ever speak with us, the following warning signs are worth applying to any stem cell quote you are weighing. None of these is automatically disqualifying on its own, but several together should give you serious pause.

• Guaranteed results or "cure" language. No reputable physician guarantees an outcome from a biologic, and no current evidence supports the word "cure" for the conditions stem cells are marketed to treat. Published trials report a range of responses — including non-responders — not certainty. Promises of a guaranteed result are a marketing claim, not a medical one.
• No named, licensed physician you can verify. You should be able to learn the name and medical license of the physician responsible for your care before you pay anything. In Mexico, the cédula profesional is publicly verifiable through the SEP registry. A clinic that will not tell you who is treating you, or routes you only to sales staff, is a red flag.
• No Certificate of Analysis or laboratory transparency. Cell-based products should come from a quality-controlled laboratory that can produce a Certificate of Analysis (CoA) for the specific lot used — including viability, cell count, sterility, and identity testing. "Proprietary" cells with no documentation are impossible to evaluate and a recognized safety concern.
• The same protocol for every condition. A clinic that proposes an identical "stem cell package" regardless of whether you have knee osteoarthritis, an autoimmune disease, or hair loss is not practicing individualized medicine. Cell type, dose, and route should be matched to the indication and the patient, not sold as a one-size-fits-all product.
• Pressure, deposits before diagnosis, or refusal to say no. Urgency tactics, large non-refundable deposits requested before any real clinical review, and a clinic that never tells anyone they are not a candidate are all signs that sales — not medicine — is driving the recommendation. Reported harms from unregulated cell products include serious infections and other adverse events, which is why an honest candidacy assessment matters.

These patterns are echoed by patient-safety regulators worldwide. The U.S. FDA, for example, regulates most cell-based products as biologics and has repeatedly warned that unapproved "stem cell" and exosome offerings marketed with disease claims can carry real risk. A second opinion is, in part, a structured way to apply that same scrutiny to a specific quote in front of you.

How we ensure safety and COFEPRIS compliance

Cell types, regulation, and realistic outcomes

Patients are frequently quoted "stem cells" as if it were a single product. In practice the biologics differ meaningfully, and so do the regulatory frameworks that govern them in different countries. Understanding both is central to a useful second opinion.

Common regenerative options compared

We go deeper on mesenchymal stem cells and on how peptides compare to cell therapy on dedicated pages: mesenchymal stem cells, autologous vs. allogeneic and peptides vs. stem cells.

COFEPRIS in Mexico vs. FDA oversight in the United States

International patients reasonably ask how stem cell regulation in Mexico compares to the United States. In Mexico, clinical establishments and the handling of cell-based products fall under COFEPRIS (Comisión Federal para la Protección contra Riesgos Sanitarios), the federal health-risk regulator. In the United States, the FDA regulates human cells and tissues under 21 CFR Part 1271, distinguishing minimally manipulated "361" products from cell therapies that require a full Biologics License Application ("351" products). The frameworks differ, but the underlying principle is the same: cells should come from a screened, quality-controlled source, and claims should match the evidence.

What this means for you, practically, is that the right questions are identical in either country. Who is the licensed physician responsible for my care, and is their license verifiable? Which laboratory supplies the cells, and can they provide a Certificate of Analysis? Is the proposed indication supported by published evidence, or is it experimental? A transparent clinic welcomes these questions. Our second opinion is built to help you ask them — and to answer them honestly about our own protocols.

Information for US and Canada patients

What "realistic outcomes" actually means

Honest outcome ranges vary by condition and are best read from the published literature rather than from marketing. In knee osteoarthritis, for example, a 2025 systematic review and meta-analysis of randomized controlled trials found that mesenchymal stem cell injection improved pain and function compared with control groups at follow-up — while also noting that outcomes are largely patient-reported and that trial designs vary, so the certainty of the evidence is not absolute. That is the spirit in which we discuss every condition: a realistic, sourced range of what has been observed in comparable patients, the timeline over which improvement typically appears, and an explicit acknowledgment of non-responders. We do not promise outcomes, and we will not quote you a single "success rate" stripped of its context.

Realistic timelines and evidence by condition

Because "how long until I feel better?" depends almost entirely on the diagnosis, we discuss timelines condition by condition rather than as a single number. The summaries below reflect the published evidence and our own clinical experience; they describe ranges, not promises, and every one of these indications includes patients who do not respond. A second-opinion call applies this same condition-specific lens to your particular case.

• Knee and large-joint osteoarthritis. In randomized trials of mesenchymal stem cell injection for knee osteoarthritis, improvements in pain and function are typically measured at 6- and 12-month follow-up rather than within days, and a 2025 meta-analysis found benefit over control while cautioning that outcomes are largely patient-reported and the certainty of the evidence is moderate at best. Earlier-stage arthritis with preserved joint space tends to respond more favorably than bone-on-bone disease, which is one of the most common reasons we tell a patient no.
• Lumbar disc and discogenic low-back pain. The spine is where honesty matters most. A 2025 double-blind phase IIB randomized trial (the DREAM Study) of intradiscal mesenchymal stromal cells found measurable improvement in disc structure on imaging, yet those radiological gains did not translate into a clear advantage over a sham procedure for pain or disability at 6 months. We share this openly: a biologic that changes an MRI does not automatically change how you feel, and discogenic pain is an area where realistic expectations and careful candidate selection are essential.
• Tendinopathy (tennis elbow, Achilles, rotator cuff). For chronic tendon problems such as lateral epicondylitis, the evidence for orthobiologics is most convincing over the long term rather than the short term. A 2024 meta-analysis of randomized trials concluded that platelet-rich plasma offered better long-term (≥6-month) functional improvement and pain relief than corticosteroid, even though corticosteroid often looks better in the first few weeks. Tendon healing is slow biology; a credible plan sets expectations in months, not days.
• Hair loss, autoimmune and systemic conditions. For indications outside orthopedics — androgenetic alopecia, autoimmune and post-viral conditions — the published evidence is more heterogeneous and, in several areas, still early. We will tell you candidly when an indication is supported by limited or preliminary data, what a realistic trial of treatment would look like, and at what point we would reassess rather than continue. "Promising but unproven" is an honest answer we are willing to give.

How our virtual second-opinion evaluation works

The evaluation is a 15–30 minute video call with a named, licensed physician on our medical team. You will know in advance who you will be speaking with, their cédula profesional (Mexican medical license number, publicly verifiable through the SEP registry), and their area of expertise. We do not pass second-opinion calls to sales staff or pre-screening agents — the call is with the physician from the first minute.

Before the call, you will be asked to upload (or email) any imaging, lab work, prior consultation notes, and quotes you would like reviewed. Upload happens through an encrypted form that respects Mexican LFPDPPP and US HIPAA-aligned medical-record handling standards. The physician reviews the materials before the call so the live time is spent on your specific case and on your questions, not on intake.

During the call, the physician walks you through their reading of your situation, what regenerative options are or are not appropriate, what realistic outcomes look like, what the next clinical step would be if you decided to proceed (and what it would cost), and what alternative paths are worth exploring. You will have time for questions and we will not rush you.

Within 48 business hours after the call you receive a written summary by email — signed by the physician — restating the key findings, the recommendation, any alternative options discussed, and the references or sources used. You can share this document with another physician, with family, or with insurance if relevant. We do not require any decision on the call itself.

What happens after you receive the written summary

The written summary is yours to keep and act on however you choose — there is no clock and no follow-up sales sequence. In practice, patients take one of a few paths after reading it, and each is a legitimate outcome of an honest second opinion.

• Take it to your own physician. Many patients share the signed summary and the cited references with their primary doctor, surgeon, or specialist to discuss it in the context of their full history. Because the document names the physician, their cédula, and the sources used, it is built to be read critically by another clinician.
• Ask follow-up questions or send new records. If something is unclear, or if you obtain newer imaging or labs, you can reply and we will revisit the recommendation. A second opinion is a conversation, not a verdict, and updated information sometimes changes the answer.
• Decide to proceed with a treatment plan. If the recommendation is favorable and you want to move forward with us, the next step is a detailed, individualized treatment plan and a complete written estimate before any commitment. Nothing about proceeding is automatic or assumed.
• Choose a different path entirely. Pursuing a more conservative option, a different specialty, another clinic, or simply waiting and monitoring are all valid. We do not penalize or pressure patients who do not book, and you are welcome to return later if your situation changes.

Meet the licensed physicians who run the evaluation

What does the second opinion cost?

The second-opinion video evaluation and the written summary are free. There is no obligation to book any treatment afterwards, and we will not pressure you to do so. This is our primary way of meeting new international patients — and we have built our practice on the assumption that an honest first consultation is the best advertising we will ever do.

We are transparent about why this is free. Stem cell therapy and broader regenerative protocols are our main business. When a second-opinion patient is a good candidate and chooses to proceed with us, that is a meaningful revenue stream. When the patient is not a good candidate, or simply chooses a different clinic, the cost of the consultation is ours to absorb — and we are comfortable with that math because it forces our medical team to give the honest answer every single time. If we recommended treatment to everyone who called, this funnel would stop working. So we don't.

There is no hidden cost downstream either. If after the second opinion you choose to proceed with a treatment at Regeneris Therapy, you will receive a complete written estimate before any deposit. All prices are quoted in USD or MXN, both currencies are accepted, and the estimate includes consultation, laboratory work, biologics, the clinical session, follow-up visits, and any required materials. No surprise add-ons.

What you receive at the end of the evaluation

Every second-opinion patient walks away with a structured, named, written answer to four questions. We refuse to send patients home with vague reassurance or hedged language — the whole point of the evaluation is to leave you with usable information.

1. Are you a candidate for regenerative medicine? — A yes/no/maybe answer with the clinical reasoning behind it. "Maybe" answers come with the specific additional information we would want (a fresh MRI, an inflammatory panel, a cardiology clearance) before being able to commit either way.
2. If yes — what protocol would we propose? — The cell type or biologic (mesenchymal stem cells, exosomes, PRP, peptides, IV therapy, or a combination), the dose, the route of administration, the number of sessions, and the supplying laboratory. No vague "stem cell package" — a real clinical proposal.
3. What are realistic outcomes — and over what time frame? — The honest range of what we have seen in patients with comparable presentations, the time frames over which improvement typically appears, the percentage of patients we have seen respond, and the cases in which the protocol failed to help. No guarantees, ever.
4. What alternatives should you consider? — If we don't believe a regenerative protocol is the best path for you, we will say so and explain what we would do instead — including referring you back to a surgeon, a rheumatologist, a sports medicine physician, or a different clinic better suited to your case.

Honesty policy — when we tell patients no

A meaningful share of our second-opinion calls end with us telling the patient that stem cell therapy is not the right option for their situation. We tell patients no when the imaging does not support a biologic response (advanced osteoarthritis with full joint-space collapse and severe bone-on-bone deformity is the most common example); when the underlying condition is being actively driven by something the biologic cannot reach (an unresolved autoimmune flare, an undiagnosed metabolic disorder, a structural lesion that needs surgical correction first); when the patient's expectations are not aligned with what the evidence supports; and when, frankly, we believe a different clinic or a different specialty would serve them better than we would.

This is the single most important sentence on this page: we would rather lose a sale than ship a patient into a protocol we don't believe will help them. The internal cost of that policy is real — every "no" is a paying patient we don't keep. The long-term cost of the opposite policy is much higher, both for patients and for a clinic's standing in the medical community. Saying no when no is the honest answer is what builds the kind of practice physicians and patients trust over decades.

If we say no, you get a written summary explaining why, the alternatives we would explore, and (where appropriate) the names of clinics or specialists that we think would be more useful for your specific case. We are not in the business of holding a patient captive to one clinic's view.

How we support international patients

Privacy and medical record handling

Your medical records are sensitive — and we treat them accordingly. Records uploaded through our intake form are transmitted over TLS and stored in encrypted form on infrastructure that meets the standards required under Mexico's Ley Federal de Protección de Datos Personales en Posesión de los Particulares (LFPDPPP) and aligns with US HIPAA practices for protected health information. Access is restricted on a clinical-need basis to physicians and authorized clinical staff.

We do not share, sell, or otherwise disclose your medical information to third parties for marketing purposes. We may, with your explicit consent, share a de-identified summary with a relevant external specialist if a referral is the right next step — and only then. You may request deletion of your records at any time, in writing, and we will honor the request subject to the limited record-keeping obligations Mexican health regulation imposes on medical establishments.

Our full privacy notice and the LFPDPPP-mandated Aviso de Privacidad are published on the privacy page linked at the bottom of this document. The privacy notice covers retention, your ARCO rights (Access, Rectification, Cancellation, Opposition), our designated privacy contact, and how to file a complaint with INAI (the Mexican federal data-protection authority) if you ever feel your rights have been violated.

Read our full Privacy Notice (LFPDPPP-compliant)

Frequently asked questions about the second opinion

The information on this page and provided during the second-opinion evaluation is medical information, not personalized medical advice or a substitute for in-person care. A virtual second opinion does not establish a doctor–patient relationship requiring continuity of care, and our physicians do not prescribe, diagnose definitively, or recommend that you discontinue any current treatment without coordination with your primary physician. Outcomes vary by patient and depend on a full in-person clinical evaluation.