Normal nutrient functions

These examples concern nutrients present in both formulas. The products have different compositions and serving sizes; check the relevant product label for amounts.

Nutrient	Authorised nutrient function
Magnesium	Contributes to normal psychological function and the normal functioning of the nervous system.
Vitamin C	Contributes to the normal function of the immune system.
Vitamin D	Is needed for normal growth and development of bone in children.
Zinc	Contributes to the normal function of the immune system.

Extra Sensitive contains no iron, iodine, selenium, vitamin B2, vitamin B12, inulin or choline. Research about those ingredients should not be presented as evidence about Extra Sensitive.

Authorised claims have conditions of use. General nutrient information and studies of other supplements do not demonstrate the same outcomes for a finished Neurohappy product.

View the official Great Britain claims register · Extra Sensitive formula · Original formula

Feeding problems and nutrient intake: Sharp and colleagues’ meta-analysis reports higher odds of feeding problems, not fivefold higher odds of nutrient deficiencies.

Research and resources: what they tell us

Food preferences and sensory sensitivities

Practical background reading from psychologist Emily Kuschner. This is general guidance, not a trial of Neurohappy.

Autism Speaks

Micronutrient deficiencies: research overview

Research by Dimitar Marinov and colleagues. Nutrient needs vary; this is background evidence, not proof of a benefit from Neurohappy.

ScienceDirect

Nutritional status in autistic children

Research by Afnan Alhrbi and colleagues. Read the population, methods and limitations before applying findings to an individual child.

PMC

Vitamin and mineral supplements: research survey

James B. Adams and colleagues. A research survey about supplements; it does not test either Neurohappy formulation.

BMC Pediatrics

Vitamin B12: review of research

Mateusz Zwierz and colleagues. Original contains B12; Extra Sensitive does not. This review should not be read as evidence about Extra Sensitive.

Vitamin B12 and Autism Spectrum Disorder: A review of Current Evidence

Vitamin interventions: systematic review

Yonghui Shen and colleagues, 2025. Studies of different vitamin interventions do not establish benefits for the finished Neurohappy products.

Neuropsychiatric Disease and Treatment

Chicory root fibre: ingredient research

A report from ingredient supplier BENEO, rather than an independent trial of Neurohappy. Original contains inulin; Extra Sensitive does not. Findings at other doses should not be applied to either pouch.

Prebiotic chicory root fibre maintains children’s microbiota.

Folinic acid: a different form and dose

Frye and colleagues studied high-dose folinic acid in a small trial. Neurohappy uses 5-MTHF, a different form of folate. This trial does not demonstrate a communication benefit from Neurohappy.

Read the folinic-acid trial and its dose, methods and findings

Vitamin A: review of research

Zhonghui Liu and colleagues. Background research on vitamin A, not a clinical trial of Neurohappy.

Research Progress in Vitamin A and Autism Spectrum Disorder

Selenium: child development research

Gulnara Batyrova and colleagues. Selenium is included in Original, not Extra Sensitive. This is wider nutrient research.

Unveiling the Role of Selenium in Child Development

Vitamin D status: research study

Zuqun Wang and colleagues. A study of vitamin D status should not be taken as proof that a supplement changes autism-related outcomes.

Study: Vitamin D status in children with autism spectrum disorder

Vitamins and minerals: general information

British Nutrition Foundation. An introduction to nutrient functions, not evidence about a particular Neurohappy formulation.

British Nutrition Foundation: vitamins and minerals

Folic acid: systematic review

Bianka Hoxha and colleagues. Folic acid, folinic acid and 5-MTHF are different forms of folate; research findings cannot be assumed to apply across forms and doses.

Folic Acid and Autism: A Systematic Review of the Current State of Knowledge

Folate metabolism: background research

Richard E. Frye and colleagues. Research on potential biomarkers does not establish a health benefit from Neurohappy.

Folate Metabolism Abnormalities in Autism: Potential Biomarkers

Vitamin B6 and magnesium: evidence limitations

The linked Cochrane review found insufficient evidence to recommend this intervention as an autism treatment. This is separate from authorised claims about the normal functions of these nutrients.

Combined vitamin B6‐magnesium treatment in autism spectrum disorder

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