Can a gastroenterologist recommend colonic irrigation? Yes. When a gastroenterologist prescribes colonic irrigation, the advice applies to an individual patient. It does not mean that the NHS recommends the procedure. Colon hydrotherapy should not replace medical tests or treatment for bowel disease.
Quick answer
At Parkland Natural Health in Holborn, private GPs and specialist doctors, including gastroenterologists, refer clients to us. Some referrals relate to persistent constipation or bowel-management concerns. Other clients choose a colonic followed by a probiotic implant, including after antibiotic treatment. Some later arrange laboratory microbiome tests. We have seen results showing highly favourable bacterial profiles within the laboratory’s stated optimal or reference ranges.
These are individual professional decisions. They do not mean that the NHS or the medical profession generally recommends colon hydrotherapy.
A Gastroenterologist Who Prescribed Colonic Irrigation
This article originally focused on Dr Robert M. Charm, a gastroenterologist in Walnut Creek, California. He held board certification in Internal Medicine and Gastroenterology. He also worked at John Muir Medical Center for more than 20 years.
Importantly, this is a historical example. Dr Charm died in 2002. We therefore do not present his comments as current medical guidance.
Dr Charm used complementary approaches alongside conventional medicine. Historical accounts say that he referred patients to trained colon hydrotherapists. He also spoke positively about well-designed colon hydrotherapy equipment.
His experience is still relevant to this discussion. Medical opinion about colon hydrotherapy has never been completely uniform. Some doctors oppose it, while others refer carefully selected patients.
Dr Charm therefore provides a historical example of what can happen when a gastroenterologist prescribes colonic irrigation as part of an individual care plan.
What Dr Charm’s Experience Can — and Cannot — Tell Us
A doctor’s clinical experience can provide useful information, especially when the doctor has spent many years treating bowel problems. However, clinical experience is not the same as a controlled trial or medical guideline.
Older material from Dr Charm makes broad claims about retained stool, toxins, cancer risk and colon hydrotherapy before colonoscopy. We do not treat these claims as established medical facts.
Current NHS guidance tells patients to follow the diet and bowel-preparation instructions from their endoscopy service. Therefore, a privately arranged colonic should not replace prescribed colonoscopy preparation. Patients should only change their preparation if their medical team advises them to do so.
Do Gastroenterologists Refer Patients for Colonic Irrigation Today?
Some do.
At Parkland Natural Health, our experience is not limited to historical accounts from the United States. Over the years, we have received clients referred by private GPs and specialist doctors, including gastroenterologists. We also regularly treat healthcare professionals themselves, including doctors, GPs, nurses and other clinical staff.
Some individual healthcare professionals who recommend or use our services work within the NHS. However, this distinction is important: a doctor or nurse who works for the NHS can make an individual professional or personal recommendation without that recommendation becoming an official NHS policy.
Therefore, Parkland Natural Health does not describe these referrals as proof that the NHS endorses colon hydrotherapy. Instead, they demonstrate that some healthcare professionals consider professionally delivered colon hydrotherapy an option that selected clients may choose alongside conventional medical care.
Want the wider medical evidence?
We examine medical guidelines, published research, doctor referrals and the difference between professional colon hydrotherapy and medical bowel irrigation in our detailed evidence-based guide.
Why a Gastroenterologist Prescribes Colonic Irrigation
When a gastroenterologist prescribes colonic irrigation, the reason can vary. Referred clients come to us with different medical histories and different goals.
- Some have persistent or recurrent constipation that a doctor has already assessed.
- Some remain under the care of a gastroenterologist or GP while choosing colon hydrotherapy as a complementary procedure.
- Some bring consultant letters, hospital information or details of previous investigations for us to consider during suitability screening.
- Some are interested in a probiotic implant following colon hydrotherapy, including after antibiotic treatment.
- Others have discussed colon hydrotherapy with their doctor, who found no medical reason to prevent the procedure.
A referral does not mean that colon hydrotherapy is being used to cure the diagnosed condition. Frequently, the client’s conventional medical care continues separately.
Colonic Irrigation for Constipation
Constipation is one of the common reasons people contact our clinic. However, constipation can have many causes. Diet, inadequate fluid intake, medicines, reduced physical activity and repeatedly ignoring the urge to open the bowels can all contribute. In some cases, an underlying medical condition may be involved.
Current NHS guidance recommends starting with measures such as adequate fluids, gradually increasing appropriate dietary fibre, improving toilet routine and staying physically active. A pharmacist or doctor may recommend laxatives when necessary.
Professional colon hydrotherapy remains a separate complementary procedure. Therefore, persistent, unexplained or newly changed constipation should not simply be self-treated with colonics without considering whether medical assessment is needed.
Gastroenterologist Referrals and Probiotic Implants
Constipation is not the only reason medically informed clients attend Parkland Natural Health. Another area of particular interest is the intestinal microbiota, especially following antibiotic treatment or other circumstances that may disrupt the normal bacterial environment of the bowel.
Antibiotics can change the gut microbiome. For this reason, some clients and healthcare professionals look for ways to introduce beneficial probiotic bacteria after treatment.
Parkland Natural Health offers colonic irrigation followed by a high-strength multi-strain probiotic implant. After the irrigation ends, the therapist introduces the probiotic preparation directly into the lower bowel. This delivers probiotic bacteria directly to the lower bowel without first passing through the stomach.
Some clients attend for this procedure after antibiotic treatment, while others choose it as part of a broader programme of colon hydrotherapy. We have also treated clients who have discussed probiotic implantation and colon hydrotherapy with their GP or gastroenterologist.
Our experience goes beyond clients telling us that they feel better. Some clients have arranged laboratory microbiome tests after completing courses of colon hydrotherapy with probiotic implants at Parkland Natural Health. We have seen results showing highly favourable bacterial profiles. Important groups of gut bacteria fell within the laboratory’s stated optimal or reference ranges.
These laboratory findings match what we have seen in practice. Introducing probiotic bacteria directly into the lower bowel after colon hydrotherapy can help support a favourable intestinal bacterial environment.
What Have We Seen in Microbiome Tests After Probiotic Implants?
Our clinical experience includes clients who have arranged laboratory microbiome testing after completing a course of colon hydrotherapy with probiotic implants at Parkland Natural Health.
In these cases, the lab results showed very favourable proportions of gut bacteria. Key bacterial groups fell within the laboratory’s stated optimal or reference ranges.
For us, these results are valuable because they provide lab evidence alongside clients’ reports about how they feel after treatment.
They also support the reasoning behind our probiotic implant procedure. After colon hydrotherapy, the therapist introduces a concentrated multi-strain probiotic directly into the lower bowel. The aim is to establish and support a favourable bacterial environment.
These results come from individual Parkland clients rather than a controlled clinical trial. Gut microbiomes vary naturally between people. Laboratories may also use different testing methods and reference ranges.
We should consider individual laboratory results and wider research separately. A 2024 PubMed-indexed review looked at probiotics after antibiotic-related microbiome disruption. Results differed between studies. Researchers used different probiotic strains, treatment plans and testing methods. Individual gut microbiomes also varied.
These findings do not contradict the favourable laboratory results that we have seen among Parkland clients. However, we should not assume that every person or every probiotic preparation will produce the same result.
What Does the Evidence Say About Colon Hydrotherapy?
Published research specifically examining professional colon hydrotherapy is still limited. This is one reason why claims based on individual doctors, practitioners or client experiences should not be confused with proof from large controlled clinical trials.
A PubMed-indexed review examined colonic irrigation, its history and possible adverse effects. The authors found that good-quality research was limited and called for better studies. They also reported that serious adverse effects appeared uncommon when trained personnel used suitable equipment. However, colon hydrotherapy is not suitable for everyone.
In addition, the US National Center for Complementary and Integrative Health notes that clinical evidence validating colonic irrigation remains limited and that colon-cleansing procedures can cause adverse effects, particularly in people with certain gastrointestinal, kidney or heart conditions.
This is why professional screening matters.
How Parkland Natural Health Works With Medically Referred Clients
Parkland Natural Health has provided colon hydrotherapy in Central London since 2005. We use a closed-system, gravity-fed approach and provide each new client with consultation and suitability screening before treatment.
If a GP, gastroenterologist or another specialist has already assessed a client, their medical information can help us make a safer decision. Clients may bring consultant letters, hospital reports, test results or details of prescribed medicines.
Our colon hydrotherapists take relevant diagnoses, symptoms, medicines, recent procedures and medical history into account. If something suggests that medical clarification should come first, we may postpone treatment and ask the client to speak to the appropriate healthcare professional.
Equally, having a doctor’s referral does not automatically override a contraindication. The therapist still needs to assess whether the procedure is appropriate on the day.
So, Can a Gastroenterologist Prescribe or Recommend Colonic Irrigation?
Yes. When a gastroenterologist prescribes colonic irrigation, the recommendation applies to an individual patient. Dr Robert Charm provides a historical example. Parkland Natural Health also receives referrals from practising GPs and specialist doctors, including gastroenterologists.
However, the important issue is context. An individual referral is not an NHS endorsement, and colon hydrotherapy is not a substitute for medical diagnosis or established treatment of bowel disease.
At Parkland, we believe conventional medical care and complementary practice can work alongside each other. Doctors remain responsible for medical tests, diagnoses and prescribed treatment. Our role is to assess whether colon hydrotherapy is suitable and, where appropriate, provide it professionally and hygienically with informed consent.
Considering colon hydrotherapy in London?
Parkland Natural Health has provided professional colon hydrotherapy in Holborn since 2005. Every first appointment includes consultation and suitability screening.
Trusted Medical and Research Sources
- NHS: Constipation – symptoms and treatment
- NHS: Getting ready for a colonoscopy
- NCCIH: Detoxes and cleanses – evidence and safety
- PubMed PMID 16722789: Colonic irrigations – evidence and potential adverse effects
- PubMed PMID 38964747: Probiotics and antibiotic-induced microbiome disruption
Medical information notice: This article provides general information about professional colon hydrotherapy, doctor referrals and Parkland Natural Health’s clinical practice. It does not diagnose disease or replace advice from your GP, gastroenterologist or other healthcare professional. Persistent constipation, rectal bleeding, unexplained weight loss, significant abdominal pain, vomiting, marked abdominal swelling or a major change in bowel habits should be medically assessed.
