ADHD can be categorised into two types of behavioural problems: inattentiveness, and hyperactivity and impulsiveness. Most people with ADHD have problems that fall into both these categories, but not always. For example, some people with the condition may have problems with inattentiveness, but not with hyperactivity or impulsiveness. This form of ADHD is also known as attention deficit disorder (ADD). 

See what the medical experts say:

Micronutrient therapy holds out hope for support for the many children diagnosed with ADHD.  

In 2017, the first fully blinded randomised controlled study took place with children aged 7 to 13, 47 taking taking Hardy Daily Essential Nutrients (DENs), and 47 taking a placebo.  The results showed significant improvement in aggression and emotional management, and were published in the Journal of Child Psychology and Psychiatry (see here)  

More recently the results have been published of a follow up study looking at the blood and fecal samples of the children who participated to see if there was any difference in the gut microbiome between the two groups.  The results were published in Scientific Reports (June 2019) 

Whilst it was found that there was no difference in the overall gut function, so there was no significant bowel disruption in children taking DENs, an interesting finding was that certain kinds of bacteria were in reduced quantities in those children.   The Bifidobacterium species was found to be in much less abundance than other species, indicating that the micronutrients had caused this reduction.  Other ADHD research has found that higher quantities of the bifida group correlates with ADHD symptomology, which fits with these results.   Another finding was that the overall diversity of the gut microbiome was increased in the children taking the micronutrients, indicating that their ability to deal with the challenges and changes in the environment, is likely to be enhanced.  

All the children treated with micronutrients, were given over the course of 10 weeks a dose of 10 to 12 capsules per day.

Another follow up study a year later on the children taking micronutrients was carried out and improvements were shown to have been maintained. (see here)

Dallin Hardy of Hardy Nutritionals speaking of the latest research:

Another study is "Micronutrients for ADHD Youth" research study at Oregon Health & Sciences University, nicknamed the ‘MADDY’ study.  It is testing DENs usage on children and young adults not taking other medication.  There have been noticeable differences in many of these children – see this one of Victor: 

Testimonial:

"My husband and I want to thank Hardy Nutritionals for saving our son's life.  Our son Ben (8 years old and non-verbal) was raging, violent, breaking windows, biting and hair-pulling.  When we started with DENs Ben was on 13 different prescription medications.  We were told there was nothing that could be done for him.  Three weeks after starting the DENs we heard from his school that he had made a huge turnaround.  Now he plays with other children and at bedtime, he goes easily to bed.  Gradually he has been able to come off his meds"  P.B. ,September, USA

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