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Ginkgo Biloba For ADHD: Dosage, Effectiveness, Studies, & More

Medically reviewed by 
Amitha Kalaichandran
Ginkgo Biloba For ADHD: Dosage, Effectiveness, Studies, & More

Attention-deficit/hyperactivity disorder (ADHD) is a condition that affects millions worldwide, characterized by symptoms such as inattention, hyperactivity, and impulsivity. While traditional pharmacological treatments have been the cornerstone of managing ADHD, they are not without their limitations, including side effects and varying degrees of effectiveness. This has led to a growing interest in complementary and alternative medicine (CAM) approaches.

Among these, Ginkgo biloba, an ancient herbal remedy with a rich history in traditional medicine, has emerged as a potential player in the ADHD therapeutic landscape. This article aims to delve into the scientific evidence surrounding the use of Ginkgo biloba for ADHD.

Let’s explore the various studies and clinical trials that have examined the efficacy of Ginkgo biloba in alleviating ADHD symptoms. From its impact on cognitive functions to its safety profile and potential side effects, we’ll aim to provide a comprehensive overview of what current research says about this herbal treatment.


What is Ginkgo Biloba?

Ginkgo biloba, often simply called ginkgo, is a tree native to China with a long history of use in traditional medicine. It's one of the oldest living tree species, with some specimens believed to be over 1,000 years old. The tree can grow up to 35 meters tall and is easily recognizable by its fan-shaped leaves.

The leaves of the ginkgo tree are commonly used in herbal medicine. They contain two types of chemicals: flavonoids and terpenoids, which are thought to have strong antioxidant properties. These substances are believed to help in protecting cells from damage.

Ginkgo is most widely used for its potential benefits in improving brain health. It's often taken for memory enhancement, for alleviating symptoms of dementia, and for improving blood flow and cognitive function in the brain. However, the scientific evidence supporting these benefits is mixed. Some studies suggest it might help with certain aspects of cognitive function in people with Alzheimer's disease or other types of dementia, while other studies have not found significant benefits.

Does Ginkgo Biloba Help with ADHD?

According to one study, Ginkgo biloba appears to show efficacy as a complementary treatment for attention-deficit/hyperactivity disorder (ADHD) when used in conjunction with methylphenidate. The study's methodology involved administering Ginkgo biloba (80-120 mg/day) alongside methylphenidate (20-30 mg/day) to children and adolescents diagnosed with ADHD. The treatment's effectiveness was assessed using the ADHD Rating Scale-IV (ADHD-RS-IV), completed by both parents and teachers at the beginning of the study, at week 2, and at week 6.

The results indicate a more significant reduction in ADHD symptoms for those who received Ginkgo biloba compared to the placebo group. This is particularly evident in the scores for inattention, both in parent and teacher ratings, as well as in the overall ADHD-RS-IV scores. Additionally, the response rate - defined as a 27% improvement from baseline in the ADHD-RS-IV - was higher in the Ginkgo biloba group compared to the placebo group, based on parent ratings.

The conclusion drawn from this study is that Ginkgo biloba can be an effective complementary treatment for ADHD. It's important to note, however, that the study suggests the need for further research, particularly with a longer treatment duration, to fully understand the potential of Ginkgo biloba in this context.

The study's findings are significant because they suggest that an herbal supplement, when used in conjunction with standard ADHD medication, can enhance treatment outcomes. However, as with any medical treatment, it's essential to consult with healthcare professionals before starting any new supplement, especially in the context of managing ADHD.

Dosage of Ginkgo Biloba for ADHD

In general, for most adults, the dosage for Ginkgo biloba is between 60-240 mg, taken by mouth daily is perfectly safe. One study found evidence that a dose of 240 mg for ADHD symptoms in children was ideal.

In that study, Ginkgo biloba special extract was used to treat children with ADHD, and the dosage was adjusted up to a maximum of 240 mg daily. The study was designed as an open clinical pilot study, involving 20 children diagnosed with ADHD of the combined type according to DSM-IV criteria.

The administration was carried out over a period of 3 to 5 weeks. The initial dosage was increased to a maximum of 240 mg per day if attention problems persisted. This gradual increase in dosage suggests a tailored approach depending on the individual response to the treatment.

The results of the study showed a very low rate of mild adverse effects, indicating that Ginkgo biloba was generally well tolerated by the children. The treatment led to possible improvements in quality of life, ADHD core symptoms, and performance in a Continuous Performance Test (CPT). Notably, the improvements in core ADHD symptoms were positively related to elevated CNV amplitude, a measure of brain electrical activity.

The conclusion of the study suggests that a maximal dosage of 240 mg daily might offer a useful alternative treatment for children with ADHD. However, the study emphasizes that this is preliminary evidence, and further research is necessary to establish firm conclusions regarding the efficacy and safety of this treatment.

It's important to note that while this study provides valuable insights, Ginkgo biloba treatment for ADHD, especially in children, should always be approached with caution. The administration of any new treatment or alteration in dosage should be done under the supervision of a healthcare professional, considering the unique needs and health conditions of each individual.

Other Considerations for Using Ginkgo Biloba

Ginkgo biloba is generally considered safe for most people when used in appropriate dosages. However, there are certain situations and conditions where its use may be unsafe or require caution:

1. Interactions With Blood Thinners and Anticoagulants: 

Ginkgo can have a thinning effect on the blood. It should be used cautiously or avoided by individuals taking anticoagulant drugs (such as warfarin) or antiplatelet drugs (like aspirin), as it may increase the risk of bleeding.

2. Contraindications with Individuals With Seizure Disorders: 

There is some evidence suggesting that ginkgo could potentially trigger seizures, so individuals with epilepsy or other seizure disorders should be cautious.

3. Insufficient Research During Pregnancy and Breastfeeding: 

Due to insufficient research on the safety of ginkgo use during pregnancy and breastfeeding, it's generally recommended to avoid use during these periods.

4. Insufficient Research With Children: 

The safety of ginkgo in children has not been thoroughly studied, and its use often needs to be closely monitored by a healthcare professional.

5. Contraindicated Prior to Surgery: 

Since ginkgo can affect blood clotting, it's recommended to stop using it at least two weeks before scheduled surgery to avoid excessive bleeding.

6. Allergies to Ginkgo Fruit or Seeds: 

Some people may have allergies to ginkgo, particularly to the pulp of its fruit or its seeds, which can cause skin reactions or more severe allergic responses.

7. Interactions with Other Medications: 

Ginkgo can interact with various medications, including certain antidepressants, diabetes medications, and high blood pressure drugs. These interactions can alter the effectiveness of the medications or increase the risk of side effects.

As with any supplement, it is important to consult with a healthcare provider before starting ginkgo biloba, especially for those with existing health conditions or who are taking other medications. A healthcare professional can provide personalized advice based on an individual's health history and current medications.

Key Takeaways for Using Ginkgo Biloba for ADHD

Ginkgo biloba is a traditional herbal remedy with a potential role in treating Attention-Deficit/Hyperactivity Disorder (ADHD). While conventional ADHD treatments are effective, they often come with side effects, prompting interest in alternative therapies like Ginkgo biloba. Various studies and clinical trials are discussed, showing that Ginkgo biloba, especially when combined with standard ADHD medications like methylphenidate, can lead to a significant reduction in ADHD symptoms, notably inattention.

Optimal results were observed with a dosage of up to 240 mg daily. Despite these promising findings, the article underscores the need for further research to solidify Ginkgo biloba's efficacy and safety, particularly in children. However, be wary of potential side effects and interactions with other medications, emphasizing the importance of medical guidance before starting any new supplement, especially for managing ADHD.

The information provided is not intended to be a substitute for professional medical advice. Always consult with your doctor or other qualified healthcare provider before taking any dietary supplement or making any changes to your diet or exercise routine.
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