Stimulant medications are the first-line treatment for attention deficit hyperactivity disorder (ADHD). Common symptoms of ADHD include hyperactivity, impulsive behavior, and difficulty paying attention.
Recently, researchers have been investigating several different supplements that may help alleviate ADHD symptoms.
In this article, we outline the research into some of the more promising hormone, dietary, and herbal supplements for ADHD.
In some cases, vitamin and mineral deficiencies are a consequence of ADHD medication. For example, stimulant medications can suppress appetite, which can lead to a decrease in a person's nutrient intake.
Certain nutrient deficiencies may also worsen ADHD or cause symptoms that mimic the condition.
Researchers are investigating whether the following hormone, dietary, and herbal supplements are effective in treating ADHD:
Melatonin is a hormone that regulates the sleep-wake cycle. It might be useful for the subset of children with ADHD who
In many cases, sleep disturbances are a side effect of stimulant medications that doctors prescribe to treat ADHD. Stimulants work by increasing activity in both the brain and central nervous system.
Although this often improves ADHD symptoms, it can lead to the following sleep problems:
- difficulty getting to sleep and waking up
- waking up throughout the night
- daytime sleepiness
The researchers used parental reports to determine treatment success. According to the reports, melatonin effectively improved sleep problems in 60.8% of participants.
In the second stage of the study, the researchers divided the children who were deficient in vitamin D into two groups. The participants in one group received an 8-week course of vitamin D supplements, while those in the other group received a placebo.
Children who received the supplements showed significant improvements in attention, impulsivity, and hyperactivity compared with children who received the placebo.
These findings suggest that vitamin D supplements may improve ADHD symptoms in children who are vitamin D deficient. However, further studies are necessary to confirm this theory.
Zinc is an essential mineral that plays an important role in brain function.
Children who are deficient in zinc can experience
Examples include jitteriness, inattention, and delayed cognitive development.
Several studies have reported a link between zinc deficiency and ADHD in children. A
However, it is still not clear whether zinc has any effect on ADHD symptoms in children or adults who are not zinc deficient.
Some researchers suggest that iron deficiency may, therefore, play a role in ADHD. A
The review found that children with iron deficiency were more likely to have ADHD. Also, in children with ADHD, there was an association between iron deficiency and more severe ADHD symptoms.
These results suggest that iron supplements may be beneficial for iron-deficient children with ADHD. However, further studies are necessary to establish whether this is the case.
Omega-3 fatty acids
Omega-3 and omega-6 are essential fatty acids (EFAs) that play an important role in brain health. Omega-3 is especially important for protecting brain tissue and aiding communication between brain cells.
A 2017 review investigated the benefit of omega-3 and omega-6 in the treatment of ADHD in children and young adults.
The review included 16 randomized controlled trials. Participants in each of these trials received either an EFA supplement or a placebo.
In 13 of the trials, the participants who took the EFA supplements showed improvements in the following:
- visual learning
- short-term memory
The authors of the review suggest that addressing this imbalance is more important than simply increasing the intake of EFAs.
The following herbal supplements are also under investigation as potential treatments for ADHD.
According to the review authors, Pycnogenol is a powerful antioxidant that may work by reducing cell damage and improving blood flow to parts of the brain that play a role in ADHD.
However, further studies are necessary to support the use of Pycnogenol as a treatment for ADHD.
Ginkgo biloba is an herb that derives from the leaves of the G. biloba tree. This herb contains chemicals called terpene trilactones.
In 2013, a small study investigated the effects of ginkgo biloba on childhood ADHD.
The study found that taking a maximum daily dose of 240 mg of ginkgo for 3–5 weeks improved ADHD symptoms. According to parental reports, children showed improvements in attention, hyperactivity, and impulsiveness.
However, this was a small study with only 20 participants and no placebo control. Well-controlled clinical trials are necessary to confirm the benefits of ginkgo for ADHD.
Although the study did not report any adverse effects of the herbal extract, the
As ginkgo is also a potential blood thinner, it may not be suitable for people with blood clotting disorders or those taking anticoagulant medications.
Many different types of supplement show promise as complementary treatments for ADHD. However, research into these supplements is still in its early stages.
Further clinical trials with more participants are necessary to get a better understanding of the effectiveness and safety of these supplements for ADHD.