User feedback on Previlli shows a mix of experiences. Many reviewers describe concrete improvements in bowel regularity and reduced bloating after taking the supplement, while several others report little benefit or adverse reactions (heartburn, nausea, sleepiness, or weight change). A few users praise shipping speed and clear product information online, but multiple reviewers also report poor or missing customer support when seeking refunds or help. If considering Previlli, note reports that the suggested regimen may include multiple large capsules per day and allow several weeks to judge effects; consult a healthcare professional for persistent symptoms or before starting a new supplement.
Examples from available reviews (Dec 2021 – Feb 2026).
Previlli greatly reduced bloating and normalized bowel movements.
“I have also noted essentially a 80-90% reduction in bloating,”
Product caused vomiting and stomach pain and support did not respond.
“Makes me want to vomit and hurts my stomach.”
Reviewer felt the product did not help and was wasted money.
“Don't think it did anything to help me i think i just wasted money”
Purchase process was quick and easy but lacked customer support.
“The process was quick and easy.”
Few reviews mention delivery or ordering; those that do report quick checkout and satisfactory shipping turnaround.
Users are split: some compare favorably to pricier alternatives, while others report feeling they wasted money when they saw no benefit.
Site and purchase experience are rarely discussed; when mentioned reviewers note clear product information and an easy, quick checkout.
Most reviewers report improved gut regularity and reduced bloating, but a notable minority report no benefit or adverse effects like heartburn or nausea.
Several reviewers report attempts to contact support for refunds or issues and describe little or no response from the company.
Overall impressions range from strong personal improvement and recommendations to reports of ineffectiveness or side effects that stopped use.
For each review, the core experience based on original source reviews.
Sources: Trustpilot (20) · Collected.reviews (1) · Quotes shortened · As of: February 2026
Product improved gut health and overall feeling of health.
“Previlli does exactly what it says it does.”
Purchase process was quick and easy but lacked customer support.
“The process was quick and easy.”
Effective for leaky gut and reduced bathroom time.
“The best product for a person living with leaky gut.”
No noticeable difference yet compared to other probiotics.
“I haven't noticed much difference from any other probiotic”
Requires three large capsules daily and other brands worked better.
“The recommended daily dosage is 3 large capsules.”
After almost a month, reviewer noticed some relief.
“I have noticed some relief.”
Previlli helped correct constipation and irregularity for reviewer.
“Previlli has been a great help to my digestive tract.”
Reviewer felt the product did not help and was wasted money.
“Don't think it did anything to help me i think i just wasted money”
Reviewer reports the product works great.
“They work great.”
Previlli greatly reduced bloating and normalized bowel movements.
“I have also noted essentially a 80-90% reduction in bloating,”
Product was helpful and shipping turnaround was good.
“Super helpful product and the shipping is good for turn around sake”
Reviewer gained weight and product failed to deliver promised results.
“I gained weight with this product.”
Early experience shows reduced stomach upset but results unconfirmed.
“My stomach seems to like it.”
Helpful for GI issues but caused sleepiness leading to discontinuation.
“the sleep inducing aspect is something that did not agree with me”
Product increased energy but caused severe heartburn, so discontinued.
“Increased energy, but gave me bad heartburn, so couldn't continue taking”
Bought Previlli and found it appears to be a good product.
“It seems to be a good product.”
Product caused vomiting and stomach pain and support did not respond.
“Makes me want to vomit and hurts my stomach.”
Product provided energy and focus benefits, used by reviewer and child.
“I like the product for the positive sides effects of energy and focus.”
Previlli helped lessen digestive discomfort and offers hopeful progress.
“I think this product has been helpful lessening digestive discomfort.”
Reviewer reports that their gut loves this product.
“My gut loves this stuff.”
This is a great company. Great product. I have been using their product for a while now and it has really helped to regulate my digestive system and I have had very little issues since I started using their supplements. I have noticed a huge difference in my stomach and heartburn since taking it every day. Also, I can honestly say that I have never had such regular bowel movements in my entire life. I also love how the Previlli website gives you all the details you need to know about the product, including a description of each ingredient. I would recommend it to any one who has digestive issues.
This page combines submitted experiences with public reviews from platforms such as Google, Trustpilot, etc. Recurring points are summarized without changing the content of reviews.
Previlli is a consumer-facing supplement brand associated with digestive health products sold online. People searching reviews typically want real-user reports on effectiveness, dosing, side effects, ordering and support. This summary is intended to help consumers evaluate Previlli from aggregated user feedback and make an informed decision when researching gut-health supplements.