10 Best Probiotics for Depression and Anxiety

5 min read 2025 Mar 14
Written by Bioma Team

Mental health challenges like depression and anxiety have become increasingly common worldwide. While there are several treatment options available, many people are turning to alternative approaches to manage their symptoms. One such approach is the use of probiotics, the beneficial bacteria that support gut health. Research has revealed a powerful connection between the gut and the brain, often referred to as the “gut-brain axis,” and probiotics may play a crucial role in alleviating mental health issues such as depression and anxiety.

How Do Probiotics Help with Depression and Anxiety?

Before diving into the 10 best probiotics for depression and anxiety, let’s understand how probiotics work and why they might be effective for mental health.

The gut and brain are intricately connected through a complex system called the gut-brain axis. This connection allows signals to flow between the gut microbiome (the collection of bacteria in the gut) and the brain. When the gut microbiome is imbalanced, it can negatively impact mood and cognitive function, potentially leading to conditions like anxiety and depression.

Probiotics are live microorganisms that, when consumed in adequate amounts, provide health benefits. These beneficial bacteria help restore balance to the gut microbiome, promoting better digestion, immune function, and overall health. More importantly, some studies suggest that certain probiotics may have the ability to regulate mood, reduce stress, and alleviate symptoms of depression and anxiety.

1. Lactobacillus rhamnosus

Lactobacillus rhamnosus is one of the most well-studied probiotics when it comes to mental health. Research has shown that this strain can significantly reduce symptoms of anxiety and depression. One study found that mice treated with Lactobacillus rhamnosus displayed lower levels of stress hormones and less anxiety-related behavior.

In humans, Lactobacillus rhamnosus has been shown to reduce symptoms of anxiety and depression by modulating the gut-brain axis. It may also help reduce inflammation, which is often linked to mental health disorders.

2. Bifidobacterium longum

Bifidobacterium longum is another powerful probiotic strain that has demonstrated promising effects on mental health. This strain is particularly effective in improving mood and reducing anxiety symptoms. Bifidobacterium longum helps promote a healthy gut environment by producing beneficial short-chain fatty acids (SCFAs) that regulate the immune system and reduce inflammation.

Several studies have found that Bifidobacterium longum supplementation can improve symptoms of anxiety and depression, making it one of the top choices for those looking to manage their mental health.

3. Lactobacillus helveticus

Lactobacillus helveticus is a probiotic strain often used to support mental health and well-being. It has been shown to help reduce the symptoms of depression and anxiety by balancing neurotransmitters such as serotonin and dopamine in the brain. Lactobacillus helveticus may also have a calming effect on the nervous system, helping individuals feel more relaxed and less stressed.

Studies have suggested that Lactobacillus helveticus supplementation can help reduce the severity of depression and improve overall mood.

4. Bifidobacterium bifidum

Bifidobacterium bifidum is a probiotic strain that plays a significant role in improving gut health and mental well-being. It has been shown to support the production of serotonin, a neurotransmitter that helps regulate mood, and can reduce symptoms of both depression and anxiety. By improving the gut microbiome, Bifidobacterium bifidum may also help reduce inflammation in the body, which has been linked to mental health conditions.

For those looking for a probiotic that targets both gut health and mental health, Bifidobacterium bifidum is a top contender.

5. Lactobacillus acidophilus

Lactobacillus acidophilus is a well-known probiotic that is often included in supplements aimed at improving gut health. Research has shown that Lactobacillus acidophilus can help reduce the severity of depression and anxiety by promoting a balanced gut microbiome. This strain may also help regulate the production of neurotransmitters, supporting better brain function and mood regulation.

Lactobacillus acidophilus is a great option for those looking for an accessible and effective probiotic for mental health.

6. Saccharomyces boulardii

Saccharomyces boulardii is a unique probiotic strain that has shown promise in supporting both gut and mental health. This strain has been shown to reduce symptoms of anxiety and depression by improving gut health, regulating inflammation, and balancing neurotransmitter levels. Saccharomyces boulardii is also known for its ability to fight harmful bacteria and pathogens, making it a great choice for those seeking overall gut health improvement.

If you’re looking for a probiotic that provides dual benefits for both mental and digestive health, Saccharomyces boulardii is an excellent choice.

7. Bifidobacterium infantis

Bifidobacterium infantis is a strain of probiotics that has been specifically studied for its potential benefits in reducing symptoms of anxiety and depression. Research has found that Bifidobacterium infantis supplementation can reduce levels of inflammation, which is often associated with mood disorders. By improving gut health and reducing gut-related inflammation, this probiotic strain may help alleviate anxiety and depression symptoms.

Bifidobacterium infantis is one of the best probiotics for those looking for targeted relief from mental health issues.

8. Lactobacillus plantarum

Lactobacillus plantarum is a versatile probiotic strain that has demonstrated a positive impact on mental health. Studies have shown that Lactobacillus plantarum can help reduce stress, anxiety, and depressive symptoms by regulating the gut microbiome and improving immune function. This strain may also help improve the body’s ability to cope with stress by reducing the release of stress hormones.

Lactobacillus plantarum is a powerful option for those seeking probiotics to reduce anxiety and improve mood.

9. Bifidobacterium lactis

Bifidobacterium lactis is a probiotic strain known for its ability to support both gut health and emotional well-being. Research suggests that this strain may help improve the gut-brain connection and alleviate symptoms of depression and anxiety. By promoting a balanced gut microbiome and reducing inflammation, Bifidobacterium lactis may provide relief from mood disorders.

For individuals struggling with depression and anxiety, Bifidobacterium lactis can be a beneficial addition to their supplement routine.

10. Probiotic Blends

Many probiotic supplements on the market combine multiple strains of beneficial bacteria to offer a broader range of benefits. Probiotic blends that include a combination of Lactobacillus and Bifidobacterium strains are often among the best probiotics for depression and anxiety, as they target multiple aspects of gut health and mood regulation.

When selecting a probiotic blend, look for products that include several of the strains mentioned above to maximize the potential benefits for mental health.

Try a Synbiotic Blend Designed for Mood and Mental Wellness

If you’re seeking targeted support for mental health, Vagusbiotics is a powerful option. This supplement is crafted specifically to support the nervous psychological system through a clinically backed synbiotic formula. It includes probiotics that promote gut-brain balance, prebiotics to nourish beneficial bacteria, and postbiotics to calm inflammation — all of which are essential for mental clarity, emotional balance, and stress resilience.

Final Thoughts on Probiotics for Depression and Anxiety

Incorporating probiotics into your daily routine can be a natural and effective way to support mental health and reduce symptoms of depression and anxiety. The 10 best probiotics for depression and anxiety listed in this article have shown promising results in various studies and can help balance the gut microbiome, regulate mood, and reduce stress.

If you’re considering probiotics for mental health, it’s important to consult with a healthcare professional to determine the best option for your specific needs. As always, maintaining a healthy diet, exercising regularly, and managing stress are essential components of any mental health plan.

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