D4 Clinic | Hypnotherapy Dublin
Blackrock, Dublin
(19)
Blackrock, Dublin
(19)
Welcome to the Award Winning
D4 Clinic
Hypnotherapy Clinic Dublin
My name is Jason O’Callaghan, I am a consulting psychologist and my speciality is clinical Hypnotherapy and behavioural science.
I hold a Masters degree from Trinity College in Applied Psychology, a BA (Hons) in Psychology plus qualifications in CBT and Counselling.
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19 customer reviews
Linda Leenane
Jason 100% cured my daughter’s
“vocal ticks” with only one session.
I can’t describe the relief it brought both to her and to the family.
She was reviewed by a Medical Consultant and a Neurologist with no effect whatsoever but Jason O ‘ Callaghan eased her symptoms almost miraculously. He truly is a remarkable person. I would highly recommend him to anyone.
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Pat O'NEILL
I went to see Jason in September 2017 and with his help I lost 60lbs in 12 weeks and lost a total of 75lbs in 21 weeks. I wouuld highly recommend Jason to anyone who wants to lose weight. I have maintained my weight with the 75lbs loss now for 2 years. Thank you Jason More...
Reviewed on Google Maps
Amanda Madill
I had a severe fear of flying. I thought I would never fly again. Did the session with Jason and I was able to fly to America to bring my children on their first holiday. Flying prior to that I always used valium so this time I was medication free and no panic attacks. Great that you can relisten to the hypnosis yourself at home or anywhere else if needed. I would highly recommend. More...
Reviewed on Google Maps
Shane Hynes
Jason is a true master of his craft. A complete professional & a pleasure to deal with. Highly recommended 10/10
Reviewed on Google Maps
Sharon Kennedy
Both my Daughter and myself have benifited greatly from attending Jason at D4. My session was so benificial for Back Pain , I have had many years of pain post surgery , I am now improved immensely. My Daughter attended prior to exams , her session helped her greatly during her exams. I would have no hesitation in recomending D4 , not only for the initial treatment but the follow up session , having the recordings is highly benificial More...
Reviewed on Google Maps
Helen Brothers
I started with Jason at the end of April this year. And to date I have lost 2 stone 1 lb. For me this is incredibly. I have done so may diets over the last 30 years, from diet pills, slimming drops , weight watchers, cabbage soup diets you name it I did it and it was always so hard and I never successes. The last 3 months have been the easiest 3 months I have ever had with weight loss. I have put in no effort and have never failed. I don't even want to eat crap any more. I love this life style change and for me it is worth every penny I paid for it. Can not recommend Jason's weight loss programme enough. Thank you More...
Reviewed on Facebook
Bridget O Sullivan
Outstanding results..off the cigarettes 7 months today.and no desire to go back to them..thank you so much for all your help..highly recommend.
Reviewed on Google Maps
CIS Ireland
Jason is lovely and welcoming. Felt instantly at ease. Just had my first session but already feeling a massive shift in my perception of food. Looking forward to seeing the results as I follow his simple programme More...
Reviewed on Google Maps
Saundra Roc
I'm an absolute chocoholic and decided to purchase Jason's session's for weight loss. Last night I listened to the first of the 6 sessions and I had the best sleep ever, I didn't expect this and I'm delighted to have slept so well! Today I'm feeling differently about food, which I find amazing, after listening to just one session. Today I actually felt like going for a walk, it has to come from listeningt to last night's session, I NEVER feel like going for a walk, I usually have to make myself get out for a walk! I'm feeling excited about this journey I'm on and feel grateful to Jason, so happy I contacted him now!! :) More...
Reviewed on Facebook
Dale Thomas
Great hypnotist offering a great service well done!!!!
Reviewed on Facebook
Alex Moldovan
I had a massive fear of flying and for the last few years i drove all over Europe instead of flying. I went to D4 clinic twice and on 27th of may i took my first flight! Jason really did good for me as now I've got no fear at all and he even text me after i landed to find out how i was Regards Alex bistro53 Maynooth More...
Reviewed on Facebook
John Morton
1 year off the smokes since october last year - all thanks to Jason. over 3 k in savings.
Reviewed on Google Maps
SEO Ireland
If you want to give up smoking then you really should book into see Jason, I have been off cigarettes now for 8 months, my health is better and I have saved a fortune.
Reviewed on Google Maps
Angela Nolan
Day 3 and for someone who would eat chocolate any minute of the day possible especially in bed, where I could eat two bars at least purely through habit, to having 1 bar in three days I'm delighted! I just had it for something nice rather then have to eat it, have to have it, walking my hour a day because I want to! So happy with myself! More...
Reviewed on Facebook
Marion Fitzsimons
Very pleased with the service provided. Have gone from size 20 to size 14 since my sessions in June and July, and still losing weight.
Reviewed on Facebook
Alison Mc Gregor
I literally couldn't recommend Jason enough he changed my life for the better I had the worst diet ever couldn't stomach new or healthy foods now I'm a different person after one session a week on ive swapped the crisps to fruit ! amazing experience
Reviewed on Facebook
Angela Mayne
5 weeks today of the smokes and feeling great, thanks Jason
Reviewed on Facebook
Kristine Eglite
It's works,five weeks of the smokes,happy days.
Reviewed on Facebook
Bian Roghlan
10 days off the smokes after 1 session highly recommend
Reviewed on Facebook
What do you love most about your job?
Helping clients to overcome life long issues, please see our website for testimonials www.d4clinic.ie
What inspired you to start your own business?
Losing 4 stone personally using hypnosis, it is a wonderful tool to help you to overcome issues
Why should our clients choose you?
We are widely regarded as the leading hypnotherapy clinic in Ireland and the UK in the media and among our clients with full trained Masters level psychologists and proven results time and time again
weight loss
from €49 online to €747 for full program
stop smoking
unlimited session for €397
general hypnotherapy
from €149 with trained psychologist
