In Clinic Fees

50% off Stop Smoking Hypnotherapy Downloads Now

50% off Gastric Band Hypnotherapy Downloads Now

Is Hypnosis Real?

Read TIME magazine study backed by research from both Harvard and Stanford University

Read TIME magazine study backed by research from both Harvard and Stanford University

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Some of our Downloads

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Try Hypnosis NOW

Listen to a Free Relaxation Session

*Not to be used when driving or using machinery. Not suitable for those on psychiatric medicine or those with epilepsy.

Try Hypnosis NOW

Listen to a Free Booster Weight Loss Session

*Not to be used when driving or using machinery. Not suitable for those on psychiatric medicine or those with epilepsy.

Stop Smoking program (pay in clinic) €447

Prepay NOW and get a €50 discount. 

Click here to Quit for only €397

Plus when you are a month smoke free do a testimonial video and will refund you another €50 as a thank you

That works out at only €347 to quit ( if you pay online in advance and do a testimonial video for us to share on our social media/website) 

That’s less the then the cost of one months cigarettes 

Our psychologists will work with you using a variety of techniques to help you quit.
The fee is paid on your first session and no matter how many sessions it takes you will not be charged again.
We base our prices on 1% of the cost of a 20 a day smoker over 10 years.  Or 10% the annual cost As a 20 a day smoker you are spending €4,500 per year or €45,000 over the next ten years
We will work with you until you quit. Even if you quit and slip up in the future you can come back at no cost.
When you are a month + smoke free and if you wish to do a short video testimonial for our social media/website we will refund you €50 as a thank you
Call 01 6855511 to book a free phone consultation
*(Unlimited sessions until you quit)

Weight Loss Gastric Band Program


Special VIP One to One package €447

Click here to Pay €397 in full now and get a further reduction of €50


 More then one person doing program at same time will be given a group discount (two to four people max)
This program includes unlimited one to one sessions with the D4 Clinic founder and international weight loss expert, psychologist Jason O’Callaghan

Conditions: The programme is results driven
* When you have lost your first stone in weight, you can contact the clinic to move on the next session which can be done in clinic or via email (audio sessions are emailed to you)
* When you reach the two stone mark, again you move onto the next session
* When you reach the 3 stone mark, individual sessions can be sent on request at this stage to keep you on track
* Refund of fee, if you chose to send us before and after photos for use on our website and social media at the 3 stone weight loss or above level we will refund your full fee as a thank you.

All information and materials are provided and included in your fee.
Call 01 6855511 to book a free phone consultation

Private Hypnosis Sessions (in clinic)

Private one to one session €199

Pay €149 now and get a further reduction of €50

(Note: each session recorded for you to redo at home. Most issues can be resolved in one clinic visit)
Click here to pay now 
  • In Clinic One-to-One Weight Loss Program

  • Think Yourself Thin

  • Hypnotherapy dublin

    Clinical Sessions – Private FOLLOW UP Session

  • Stop Vaping In Clinic Session


When coming to your appointment

  • Please arrive at the exact time of your appointment. There is seating area outside the clinic door
  • Please note we accept all credit cards and as we do not have cash handling facilities This is the best form of payment.
  • If you cannot make an appointment please call to cancel at least 24 hours in advance. Those who do not give 24 hours notice will lose the cost of that session.
  • Clients who are coming to the clinic for their first appointment and who cancel and wish to rebook, will be asked to pay in advance for sessions by credit card.
  • Due to demand clients who cancel two appointments will be asked to wait two months before they are given another appointment.
  • If you do not turn up for an appointment without contacting us, you will not be given another appointment and any fees will be lost.

Call now to purchase CD’s, book via credit card or make an appointment
on 01 6855511

or email us here>>

PAYMENT OPTIONS: All sessions must be paid for during first session or in advance online

All major credit and debit cards accepted




We are now open six days a week until 9pm (half day Saturday)

D4 Executive Weight Loss Package €4,999


The D4 Executive package is exclusively for those serious about weight loss and are willing to commit to a 90-day program. The package includes weekly sessions with the D4 Clinic founder, weight loss psychologist Jason O’Callaghan (either one to one in our Dublin Clinic or via Skype.)

The package is tailored to each client and overseen with weekly updates, homework and tasks to help you achieve your weight loss goals over a 3 month period, while also developing an education and motivation to stop you returning back to your old eating habits. The idea behind this exclusive program is to work one on one with the clinic to help fit in your new habits in your daily work and social life, while still maintaining a normal day to day lifestyle. Flexibility is the key with online or face to face meetings outside normal office hours if needed.

If your are interested in this package please call 01 6855511 to arrange a personal consultation with clinic founder Jason O’Callaghan