Key Points:
- Probiotics may play a role in managing gastrointestinal (GI) symptoms commonly seen in individuals with autism.
- Certain strains of probiotics have shown promise in improving gut health, potentially impacting behavioral and cognitive symptoms.
- Incorporating probiotics as part of a broader treatment plan can complement therapies like ABA for a more holistic approach to managing autism.
Autism spectrum disorder (ASD) affects millions of children and adults worldwide. Along with behavioral symptoms, individuals with autism often experience gastrointestinal (GI) issues, such as constipation, diarrhea, and bloating. The severity of these symptoms can vary, and finding the right dosage of dietary adjustments or medical interventions may help manage discomfort. According to research, about 9 to 91% of autistic individuals experience varying GI symptoms.
Because of this, many individuals have begun to explore probiotics to help manage GI issues and potentially even improve behavioral symptoms. In this article, we’ll discuss the best probiotics for autism and GI symptoms, examining the role of gut health in autism, the specific probiotics that may help, and how they can fit into an overall treatment plan.
What are Probiotics and How Do They Help Autism?
Probiotics are live microorganisms, often referred to as “good bacteria,” that can confer health benefits when taken in appropriate amounts. These beneficial bacteria help balance the gut microbiome, which is essential for digesting food, absorbing nutrients, and maintaining a healthy immune system. The gut-brain connection is particularly important in autism research, as many individuals with ASD experience GI issues that might be linked to an imbalance in their gut microbiome.
Individuals with autism often have an altered gut microbiota composition, with reduced microbial diversity compared to neurotypical individuals. This imbalance may contribute to GI symptoms and may even affect neurological functioning, leading to behavioral issues. Because of this, probiotics for autistic adults and children are being explored as a potential way to restore balance in the gut microbiome and alleviate symptoms such as constipation, diarrhea, and bloating.
By restoring the gut flora balance, probiotics may also help reduce inflammation in the gut, which has been associated with some of the behavioral symptoms of autism. Many caregivers and healthcare providers are hopeful that probiotics may not only improve gut health but also potentially have a positive impact on mood, anxiety, and behavior in individuals with autism.
What are the Best Probiotics for Autism and GI Symptoms?
When choosing probiotics for individuals with autism, it’s important to select the right strains that have shown evidence of efficacy in improving both gastrointestinal symptoms and behavioral issues. Not all probiotics are created equal, and the benefits can vary depending on the strains and doses used.
Here are some of the best probiotics for managing GI symptoms and supporting overall gut health in individuals with autism:
1. Lactobacillus and Bifidobacterium Strains
These two groups of probiotic bacteria are some of the most studied and have been shown to help improve gut health in a variety of conditions, including autism-related GI issues.
Lactobacillus and Bifidobacterium species help promote the growth of beneficial bacteria in the gut, improve digestion, and reduce harmful bacteria. They are often used to alleviate symptoms like diarrhea, constipation, and bloating.
Some benefits include:
- Help regulate bowel movements
- Reduce gastrointestinal discomfort
- Promote healthy digestion
2. Saccharomyces boulardii
This probiotic yeast is effective in managing GI issues like diarrhea, especially in individuals who may be taking antibiotics or have a history of gut infections.
Saccharomyces boulardii has shown promise in supporting gut health by balancing the gut microbiome and preventing harmful bacteria from overgrowing. It’s been used in various clinical studies involving children with autism who have chronic GI issues.
Some benefits include:
- Reduces diarrhea
- Supports intestinal integrity
- Helps prevent harmful gut bacteria overgrowth
3. Bacillus coagulans
Bacillus coagulans is another highly beneficial probiotic strain that has been found to improve gut health and reduce inflammation.
This strain can be particularly helpful for individuals with autism who experience bloating and constipation. Bacillus coagulans has been linked to improvements in digestion and overall immune function, which is important for individuals with autism who may have immune system dysregulation.
Some benefits include:
- Alleviates bloating and constipation
- Supports immune health
- Reduces gut inflammation
4. Prevotella and Firmicutes
These gut bacteria have been linked to better overall gut health and are often found in higher quantities in people who experience less GI discomfort. The balance between Prevotella and Firmicutes has been suggested to have a role in reducing GI symptoms in individuals with autism, including the reduction of bloating and discomfort.
Some benefits include:
- Improves gut microbiome balance
- Reduces GI symptoms like bloating
- Supports digestion
5. Lactobacillus rhamnosus GG
This specific strain of Lactobacillus has shown effectiveness in alleviating gastrointestinal distress and improving immune system function. For children and adults with autism who suffer from diarrhea or chronic constipation, Lactobacillus rhamnosus GG has been shown to improve overall gut health and reduce inflammation, making it an important probiotic to consider.
Some benefits include:
- Reduces inflammation in the gut
- Alleviates diarrhea
- Supports immune system health
By incorporating these probiotics into the diet, parents and caregivers of individuals with autism may notice improvements in gastrointestinal symptoms, which could also help with behavioral symptoms.
However, it’s important to note that each individual is different, and what works for one person may not work for another. Always consult with a healthcare provider before starting a probiotic regimen.

What Does the Research Say About Probiotics for Autism and GI Symptoms?
Research into the use of probiotics for autistic adults and children is still evolving, but there are several studies that support the potential benefits of probiotics for individuals with autism, particularly in relation to GI health.
For instance, one study suggests found that probiotics improved gastrointestinal symptoms and even led to improvements in certain behavioral symptoms in children with autism.
Additionally, research has shown that children with autism often have a higher incidence of GI disorders, such as constipation and diarrhea. Probiotics may help alleviate these conditions by balancing the gut microbiome and reducing inflammation. One study also found that probiotics may also reduce anxiety and irritability, which are common behavioral issues in individuals with autism.
While the findings are encouraging, it’s important to note that much of the research on probiotics for autism is still in early stages. There is no one-size-fits-all solution, and more research is needed to fully understand the long-term effects of probiotics on autism-related symptoms.

How to Incorporate Probiotics into an Autism Treatment Plan
Incorporating probiotics into an autism treatment plan should be done thoughtfully and under the guidance of a healthcare professional. While probiotics can help manage GI symptoms, they should not replace other important treatments, such as ABA therapy and speech therapy. Instead, probiotics can be used as part of a holistic approach to managing autism, supporting overall health, and improving quality of life.
To start, consider discussing with your child’s doctor or a specialist in autism care about which probiotics might be right for your child. The dosage, frequency, and type of probiotic may vary based on the individual’s age, health status, and specific needs.
Help Support Autism With ABA Therapy in Maryland
At Steady Steps ABA, we provide ABA therapy, an evidence-based approach that helps children with autism develop critical social, communication, and behavioral skills. While probiotics may play a role in improving gut health and reducing GI symptoms, ABA therapy is the gold standard in autism treatment and addresses core behavioral challenges faced by individuals with autism.
If you’re considering probiotics for your child’s GI issues or looking for comprehensive autism treatment, Steady Steps ABA in Maryland is here to help. Our expert team offers personalized therapy plans that can complement nutritional treatments like probiotics and promote your child’s overall well-being.
Contact us today to learn more about how we can support your child’s developmental journey.