Nella

Your gut is home to trillions of bacteria that influence far more than digestion — from immune signaling to the gut-brain pathways tied to rest and recovery. Nella introduces three athlete-derived Lactobacillus strains selected for their potential to support a balanced gut environment.
An acid-resistant, delayed-release capsule helps the strains reach the gut intact. Like most Lactobacillus probiotics, these strains are generally transient — they do their work while present rather than permanently colonizing the gut — which is why consistent daily use matters.

In the placebo-controlled study, participants reported the following improvements after the probiotic period compared with the placebo period. These are self-reported outcomes from that study:

Improved sleep quality — 69%
Participants reported significantly better sleep quality after taking the probiotic. Researchers also observed a decrease in D-ROMs, a marker of oxidative stress, and proposed that supporting a more balanced oxidative state may be one way the strains influence sleep.

Better bowel movements — 37%
Participants reported more regular, comfortable bowel movements. In the study, probiotic use was associated with an increase in beneficial gut bacteria, including Faecalibacterium prausnitzii.

More energy — 31%
Participants reported higher energy levels. In the athlete study, probiotic use was associated with a higher free-testosterone-to-cortisol ratio — a marker linked to recovery from physical strain. Researchers proposed a possible mechanism involving gut bacteria that produce vitamin K (menaquinone); this was presented as a hypothesis for further study, not a confirmed effect.

Nella and your microbiome — what to expect:

Within a few days
The delayed-release capsule helps Nella reach your gut intact, where it begins to interact with your existing microbiome.
As with any new probiotic, there may be a short adjustment period — some people notice mild gas, bloating, or changes in bowel movements. In the studies, these effects were generally mild and typically settled within about a week.

Within 2 weeks
As your body adjusts to consistent daily use, digestion often becomes more regular, and some people begin to notice improvements in sleep.

Within 1 month
Alongside a healthy diet and regular use, many people report feeling more energized and better rested. In the published research, sleep quality and energy were among the benefits most often reported.

After 2+ months
Continued daily use supports an ongoing routine. Some users also track metrics like HRV and REM sleep on their wearables. Individual results vary — put Nella to the test for yourself.

Product details
• Three athlete-derived Lactobacillus strains (non-spore-forming)
• Vegan
• Gluten free
• Acid-resistant, delayed-release capsule
• Informed Sport Certified
• Manufactured in a GMP-certified facility
• One capsule daily · 30-day supply