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The D4 Clinic

The D4 Clinic

Show Phone Number69 Main Street, Blackrock, DublinIreland

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About The D4 Clinic

Ireland's most successful Hypnotherapy and Stop Smoking Clinic.

What Clinic Award Winner 2015

Weight Loss Hypnotherapy

Stop Smoking for Life Now for Only €299 plus free follow up sessions for life and free recording of your sessions. With €50 refund if you provide a video testimonial after being a month smoke free.

With Trinity College Trained Psychologist/Clinical Hypnotherapist

Free follow up treatment for life for all smokers

Free recording of your session for home use

Weight Loss Hypnotherapy/Gastric Band Hypnotherapy Now Only  €499. Unlimited sessions (providing you lose 5lbs in between sessions)

For those who wish to lose a minimum of 2 stone. Call us now for more details

Also therapies for anxiety, depression, stress, phobias, confidence, public speaking, IBS, blushing

study help, relationship issues plus many more day to day issues

The Dublin 4 Clinic (Blackrock) Dublin Most Trusted Hypnotherapy Clinic. 

Using Dublin's Best Trained Trinity College Qualified Therapists. The D4 Clinic  is also the only Hypnotherapy Clinic in Ireland that offers a lifetime guarantee on all stop smoking programs, we have featured on all major radio and TV shows in Ireland and are the only clinic in Ireland to use professional Trinity College qualified Masters level psychologists as therapists.

The Dublin 4 clinic can help you to lose weight, stop smoking, reduce stress and anxiety, eliminate phobias, increase confidence, overcome stage fright, lose the fear of public speaking plus many more day to day issues using clinical hypnotherapy,psychology,CBT and counselling.

Ireland's most well known clinic The Dublin 4 Clinic is the only clinical hypnotherapy that uses Masters degree Trinity College qualified therapists. We have recently been featured on Newstalk, The Irish Times, 2FM,TV3, The Irish Independent plus most other publications.

Please email or call right now to arrange a hypnosis consultation free over the phone to see if The D4 Clinic can help you today.

We offer a lifetime guarantee for all smokers, that will give you free sessions if you have a slip up after your first session. Call Now for a chat in person with a qualified psychologist.

What is hypnotherapy?

Hypnosis is a heightened state of awareness. It is simply a state of mind, which is best used for suggestion implantation, in order to bring about desired change, such as Weight Loss, Smoking Cessation and Fear/Phobia elimination to name but some of the common ailments cured, using the power of Hypnosis. It involves complete mental and physical relaxation. Clients are totally awake and aware during a hypnosis session. Clinical hypnotherapy is not used in the same way as stage hypnosis.

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from 4 verified reviews Patient Reviews of The D4 Clinic

"it changed my whole outlook on food and portion sizes"
5 50Reviewed 20 Jun 2016 Review verified by phone and email.
Treatment Received: Hypnotherapy
I done the gastric band hypnosis with the D4Clinic and have lost 3 stone it was the best thing I done I tried so many different diets but all only worked for a few weeks my head just wasn't in the zone but Jason wasn't long in putting my head in the zone it changed my whole outlook on food and portion sizes I have much more confidence in myself and it's a pleasure buying new clothes

The D4 Clinic is such a nice place to go to you are made to feel very relaxed and you don't feel stupid asking questions in any queries you have it's very easy to get to and easy to find
Treated By: Jason Total Amount Paid €299
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Sharon Ireland
"Excellent experience"
5 50Reviewed 20 Jun 2016 We were unable to verify the reviewer.
Treatment Received: Virtual Gastric Band Hypnosis
I got the gastric band hypnosis and it's the best thing I done iv tried so many different diets and they only worked for a few weeks my head just wasn't in the zone Jason put my head in that zone and iv never looked back iv a new way of looking at food and portion sizes I highly recommend it to anyone who is looking to loose weight sensibly

The clinic is so relaxing and your made to feel very much at ease your not afraid or feel stupid asking questions it's the D4 Clinic all the way very easy to get to and easy to find
Treated By: Jason
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"Very pleased"
5 50Reviewed 21 Jan 2015 Verified user. Review confirmed by email.
Treatment Received: Hypnotherapy
Yes. Very pleased with treatment and results. I broke a CD I was given and Jason posted a replacement immediately.
Treated By: Jason Total Amount Paid €75
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J. Dublin
"Was impressed"
4.5 50Reviewed 11 Oct 2014 Review verified by email.
Treatment Received: Stop Smoking - Alternative Treatment
Attended this clinic recently and was impressed with the service, the offices and the staff. Saw a qualified psychologist who trained as a hypnotherapist. Did a stop smoking session and got a deal of €149 reduced from €249. Which was good. Never smoked again and was impressed cause they said if I slipped up I could go back for a free session anytime to help me stay off them. Still off them, so worked for me.
Total Amount Paid €149
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Carina Ireland
"I would recommend this clinic to anyone"
5 50Reviewed 05 Aug 2014 Verified user. Review confirmed by phone.
Treatment Received: Hypnotherapy
This is an excellent service. The price was very good and the process was clearly explained to me before we started. The therapy was very effective and I was given a recording of my session so I could support my session until my next session.
I also received a great book written by Jason that advises and guides through healthy change of your life.
I would recommend this clinic to anyone who needs to balance out a stressful life quickly and effectively.
Total Amount Paid €75
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Angie Dublin
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  • PSI - Psychological Society of Ireland (Ireland) 


General Practice


Parking - On Street parking (metered)Accessible to disabled peoplePublic transport access - DART to Blackrock-100 meters from clinicWheelchair accessible toiletAccess without steps - We are located upstairs opp Blackrock LibraryDisabled parkingPatient bathroomWireless accessOn-site pharmacy

Clinic Services

Emergency serviceHome visitsOpen 24 hoursOpen weekends

Travel Services

International travelLocal travelLocal accommodationTranslation servicesLocal guideTours and vacation servicesPick up service from hotelPick up service from airport

Holistic Health

€99 - €249
The D4 Clinic

Payment Information

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Private Patients WelcomePublic Health InsuranceEuropean Health Insurance CardHSEHSE Medical CardHSE GP Visit CardPRSI

Mr Jason O'Callaghan

Job Title:
  Practice Director
  Counselling, Hypnotherapy, Preventive Medicine, Psychology, Psychotherapy

Jason OCallaghan holds a Masters Degree in Appied Psychology from Trinity College, an honours degree in Psychology, plus qualifications in CBT, Hypnotherapy and Counseling. He trained for four years before opening The D4 Clinic and has gained work experience in AMNCH, Tallaght Hospital, The Samartians, ARC Cancer Support Center plus carried out research into hypnotherapy and humour therapy stress reduction for cancer patients.

Show Phone Number69 Main Street, Blackrock, DublinIreland