Probiotics for Sleep: Sensoril®, Stress, and Occasional Sleeplessness

Probiotics for sleep support work through the gut-brain axis, linking digestive health to how the nervous system regulates rest. Bio-K+ Stress Support Capsules combine clinically studied probiotics for better sleep support with Sensoril®, a patented ashwagandha extract studied for its effects on mood, memory, and sleep.†

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Probiotics for Sleep: Sensoril®, Stress, and Occasional Sleeplessness

Probiotics for sleep support work through the gut-brain axis, linking digestive health to how the nervous system regulates rest. Bio-K+ Stress Support Capsules combine clinically studied probiotics for better sleep support with Sensoril®, a patented ashwagandha extract studied for its effects on mood, memory, and sleep.†

Shop Stress Support Capsules
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What Makes This Probiotic Different

Bio-K+ Stress Support Capsules combine three proprietary, patented Bio-K+ strains (Lacticaseibacillus casei LBC80R®, Lacticaseibacillus rhamnosus CLR2®, and Lactobacillus acidophilus CL1285®) with Sensoril®, a patented ashwagandha extract. Each serving delivers 25 billion live and active bacteria guaranteed until the best before or expiry date. The capsules require no refrigeration, are 100% vegan, non-GMO, gluten-free, and titanium dioxide-free. More than 30 years of Bio-K+ science underlies every formula in the range.

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Sensoril® and Occasional Sleeplessness

Sensoril® is a patented ashwagandha (Withania somnifera) extract self-affirmed GRAS in the US, clinically studied as an ashwagandha for sleep, mood, and memory.† Bio-K+ Stress Support Capsules help promote the support of occasional sleeplessness and everyday stress.* The formula also supports cortisol levels, a marker of occasional stress.* Each once-daily serving delivers both the probiotic benefit and Sensoril® in a single formula, with no need to take a separate product for stress or sleep support.

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Gut-Brain Axis and Sleep Science

Over 90 percent of the body’s serotonin is produced in the gut. Serotonin is the precursor to melatonin, the hormone that regulates the sleep-wake cycle. The connection between gut health and sleep extends to tryptophan metabolism, the raw material for serotonin synthesis. The gut microbiome communicates via the vagus nerve and HPA axis, shaping cortisol regulation and circadian rhythm. Supporting gut health forms part of the environment in which these processes occur.

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Cortisol, Stress, and Your Gut

Cortisol is the body’s stress hormone, regulated in part through the hypothalamic-pituitary-adrenal axis, which communicates with the gut microbiome. Elevated cortisol disrupts circadian signals and can interfere with the body’s natural wind-down before sleep. Bio-K+ Stress Support Capsules with Sensoril® support cortisol levels, a marker of occasional stress.* A healthy gut microbiome contributes to this cortisol regulation pathway. Daily consistent use of the formula supports the broader conditions for managing everyday stress and restful evenings.*

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Probiotics and Digestive Health

Beyond sleep and stress support, Bio-K+ Stress Support Capsules deliver 25 billion live and active bacteria to the digestive system with every serving, promoting digestive and immune health.* These are the same three proprietary, patented strains backing Bio-K+’s core probiotic range — supported by 16 published clinical trials and 45+ peer-reviewed publications over more than 30 years of research. Counts are guaranteed until the best before or expiry date, not only at the time of manufacture.

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Once Daily, Any Time

Bio-K+ Stress Support Capsules require no refrigeration and can be taken at any time of day: morning, midday, or evening. The once-daily formula delivers 2 capsules per serving from a 60-capsule bottle, providing a 30-day supply. There are no food timing requirements. Each capsule delivers live and active bacteria directly to the digestive system.* Pairing each serving with an existing daily ritual helps both the probiotic and Sensoril® benefits accumulate over time.

Daily Consistency for Better Well+Being

The benefits of both probiotic gut support and Sensoril® ashwagandha build with consistent daily use. Probiotic bacteria do not permanently colonize the gut — regular intake sustains their contribution to digestive and immune health.* Sensoril® support for occasional sleeplessness and everyday stress* develops similarly over time. Pair each serving with an existing daily habit. More than 30 years of science supports this commitment to well+being.*

Frequently Asked Questions

Can probiotics support sleep?

Research on the gut-brain axis indicates that gut microbiome composition plays a role in regulating the neurotransmitter and hormonal environment connected to sleep and stress. Bio-K+ Stress Support Capsules combine clinically studied probiotics with Sensoril®, a patented ashwagandha extract clinically studied for its effects on mood, memory, and sleep.† The formula helps promote the support of occasional sleeplessness and everyday stress* and promotes digestive and immune health* with every daily serving. Consult a healthcare provider for persistent sleep concerns.

What is Sensoril® and how does it relate to sleep?

Sensoril® is a patented ashwagandha (Withania somnifera) extract, self-affirmed GRAS in the US and clinically studied for its effects on mood, memory, and sleep.† It is an Ayurvedic adaptogen with peer-reviewed research supporting its role in stress and cortisol regulation. In Bio-K+’s Stress Support Capsules, Sensoril® is combined with 25 billion live and active probiotic bacteria in a once-daily formula that helps promote the support of occasional sleeplessness and everyday stress.*

How does the gut affect sleep quality?

Over 90 percent of serotonin — a precursor to the sleep hormone melatonin — is produced in the gut. The gut microbiome influences tryptophan metabolism, the raw material for serotonin synthesis. Gut bacteria also communicate with the brain via the vagus nerve and HPA axis, which regulate cortisol and circadian rhythm. A healthy gut microbiome supports the conditions needed for this communication network to function. Consistent probiotic use contributes to the environment that underlies these processes.

When should I take probiotics for sleep support?

Bio-K+ Stress Support Capsules can be taken at any time of day: no refrigeration required, no food timing restrictions. Consistency matters more than the specific time. Many people prefer an evening serving as part of a wind-down routine; others pair it with morning products. The bacteria count is guaranteed until the best before or expiry date regardless of timing. Consult your healthcare provider or pharmacist for personalized guidance on scheduling relative to other products or medications.

Is it safe to take ashwagandha and probiotics together daily?

Sensoril® ashwagandha is self-affirmed GRAS in the US and has been studied in clinical trials for daily use. Bio-K+ Stress Support Capsules are 100% vegan, non-GMO, gluten-free, and titanium dioxide-free. Individuals who are pregnant, breastfeeding, immunocompromised, or taking medications should consult a healthcare provider before use. The once-daily formula provides 25 billion live and active bacteria guaranteed until the best before or expiry date.*

† These statements reflect the clinical research associated with Sensoril®. See Sensoril.com for full references.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.