The hypnotic state itself is completely natural and, as such, has no side effects. However, there are some specific cases, for example clients with very low blood sugar, that the pronounced deep relaxation may cause problems. For such reasons, we will always ask you about your medical history. With your agreement, we may also check with your GP as some medical conditions are contraindicated for hypnosis or require particular care. For example certain breathing techniques are inappropriate if you have asthma and so we would use safe and alternative methods for hypnosis. Hypno-psychotherapy is not a substitute for medical care, although we are happy to work in conjunction with your medical or other practitioners to achieve the best outcome for you.