Customer Testimonials

“I never realized the importance of feeding my gut bugs”

I developed histamine intolerance in 2014 and was having very severe urticaria (full body hives) from eating different foods and from certain environmental exposures.  To treat this, I began restricting my eating and limiting exposure to scented soaps, lotions, etc.  I began eating a ketogenic diet (at times, a zero carb diet) on June 1, 2015.  Initially I saw some great results and then things began to go downhill from there.  My sleep got worse than it already was, I had brain fog (despite all the promises of mental clarity of eating ultra low carb) and my energy was inconsistent.  I have always taken probiotics and digestive enzymes, but I never realized the importance of feeding my gut bugs.  Limiting my carbs so severely probably also limited my fiber and the prebiotics fed to my gut flora.  



“Improved my energy, my sleep and have helped me feel better over all”

Since uncovering Dr. Grace’s website, I have made several changes that improved my energy, my sleep and have helped me feel better over all.  I still eat low carb but closer to 50-75 grams net carbs per day, so now I eat cold potatoes, white rice and other resistant starches.  I take her custom probiotic formulation along with quality prebiotics and that has made a world of difference in my digestion and my sleep.  I feel like my metabolism is faster also.  I have also not had an allergic reaction lately, and I believe this protocol is the reason!



“Gained my old sexy abs”

“Many benefits I have seen working with Dr Grace: I only lost one pound on the scale but I lost a very ‘puffy’ face and gained my old sexy abs. I used to be a fitness competitor. On my last vacation to Europe, for the first time I wore a bikini in a long while. Thank you so much Dr Grace! I track a lot of numbers. Overall, I lost ½ inch and feel and look better and now can digest solid foods again. My sinus congestion is pretty much gone on her protocols. Earlier my bloating was a “12!!” on a scale from 1-10. Now I can eat gluten again. I had pita bread, garlic toast and ALL FINE. This was a big surprise but not for Dr Grace.”



“I had a uBiome consult with Dr. Grace…”

I had a uBiome consult with Dr. Grace Liu PharmD.  I  had NO Bifidobacteria longum and almost zero Akkermansia (especially compared to my lean and strong wife’s uBiome). Dr Grace’s probiotic contains Bifidobacteria longum and her prebiotic bionic fiber blend raises both Bifidobacteria longum and Akkermansia.

– B.M


“Grace Liu’s Gut Institute is my go-to knowledge base”

Grace Liu’s Gut Institute is my go-to knowledge base for all things related to my gut health. I have had particularly dramatic improvements using her recommendations for reseeding the healthy flora with The Gut Institute BIFIDO|MAXIMUS and Prescript Assist SBO’s.  I am treating complex symptoms from multiple autoimmune conditions, and these two additions to my care have contributed to some of my most notable improvements.  Grace’s background and pursuits in the field keep me hopefully engaged in my own efforts toward optimum gut wellness and the improved general health which follows.



“My life changed in 8 weeks”

I was a wreck.  I had chronic fatigue that was affecting my life. I was so tired that I could’t even read.   I started using Ultra BIFIDO|MAXIMUS probiotic and Prescript Assist daily from Dr. Liu PharmD.  I added in Ultra BIFIDO maximus, and my life changed in 8 weeks. Earlier I was so fatigued that I could not go outside or even read, I was so tired. My face was tired. After the probiotics, I have more energy and I can even tolerate more foods, my energy improved. After 6 weeks, I could go outside and walk again.



“The most knowledgeable expert with the most effective strategies”

I spent 2 years of my life trying to figure out why I struggled to digest many common foods. Despite trying many different diets (Paleo, GAPS, keto, etc.) and cooking everything myself, I still experienced IBS symptoms on a daily basis. It wasn’t until I came across Dr. Grace’s work that I turned the corner. Understanding the microbiome was my missing link to improved gut health and Dr. Grace is the most knowledgeable expert with the most effective strategies on the topic that I encountered. Specifically, taking a soil based probiotic (Prescript Assist), while adding resistant starch and bionic fiber resulted in less stomach discomfort, improved bowel movements and most importantly, the ability to reintroduce foods I wasn’t able to digest prior. It’s a great feeling to be able to sit down and share a meal with friends and family again. Thanks Dr. Grace.



“It’s seriously feels like a miracle!”

My husband and I aren’t planning to have children naturally. However, we may adopt in the future. I have a stellar update to share… I’ve been taking your BIFIDO|MAXIMUS probiotics and for the first time in years I can eat apples, avocados, mango, watermelon, broccoli, asparagus and other FODMAPS without becoming severely bloated! It’s seriously feels like a miracle!My cycle seems to be normalizing too. I haven’t had one in 98 days (still waiting, but pretty sure it’s coming given all signs and symptoms). I’m not sure if that’s from the probiotics or a combination of them with weight lifting and attempting to eat a ketogenic diet. But all systems seem to be working a bit better.

A huge thank you for creating these probiotics!! It’s so fun and exciting to eat more fruits and veggies!



“Your fibers are a saving Grace (pun intended)”

Your fiber combo fit right in with my blood sugar regulation protocol and cured the problem up.  Fiber certainly helps shed weight too and makes it easier to keep weight off.  I skip breakfast and eat at noon and again at 6:00 pm.  I am no longer a snacker, which was the reason for my weight gain.  Fung throws the idea of snacking to the curb.  You would love his book.  Your fibers are a saving grace (pun intended) when it comes to fasting and fasting is a wonderful tool to get the fat carved off quickly.  My stomach is flatter now than it has been in years without me going gaunt all over.  I still need to lose more weight but got knocked off course with this infection.  I feel very weak and tired but this too shall pass with the antibiotics killing the bad bugs.  But I think I need to get some good bugs that work in harmony with me.  



“I clung to her star and it WORKED!”

“Thank you so much for your help! You are such a blessing! Love you!! And THANK YOU. My hip is great! Despite a terrific, abundant, love-filled life I was really sick! I was not sure if I would ever feel better again. I thought I might have to depend on caregivers. I was sure I needed a psych ward, but my family wouldn’t let me go. Through her individualized sleuthing of my body’s clues, brilliant scientific understanding, and profound trust in the two as partners, Grace saw only Hope. I clung to her star and it worked! I am healing, whole, back to life again, forever grateful to Grace Liu!”

-KC, Michigan


“I haven’t been sick since”

“Grace’s program have been working great! I haven’t been sick since I started taking them! I will be fighting in 2 weeks and really appreciate all her help and support. I had been getting sick so often before, I thought something was wrong with me. Now with Grace’s help, this is the longest stretch of not being sick that I’ve had in a whole year.”

-MW, MMA fighter Bay Area California


“UNHEARD OF results”

I have worked with Grace for 9 months, and she has helped me in this short period of time identify and fix multiple health issues that regular doctor could not identify. Most importantly, I have as a result of her direction, reversed my coronary artery disease measurably (11% Coronary Artery Calcium Score regression) – something my cardiologist told me is “unheard of”. My body composition keeps getting better (8% now from 12-15%), joints, body, muscle, athletics no complaints continued unexpected improvement – doing the same or less workout. My core body temperatures have improved from 97.1 to 98.6 F. My free Testosterone has improved from 9.7 to 11.6 and SHBG dropped in HALF.”



“My stomach is flattening”

“My head, deep cystic acne and depression are a lot better which I think are related diet and the protocol and probiotics from Dr Grace. I am 37 years old and have been struggling with these issues for the last 20 years. My stomach is gradually flattening. Less stomach gurgle and gas now. If I overload on gluten, pizza, breadsticks, dip and chips, I definitely notice I recover in less and less time each time.”

-PK, Oregon


“I am so pleased with my new body and life style”

“I’m a 45 year male and for years had difficulty gaining muscle mass and low HDL cholesterol and elevated liver function tests. I was stuck, I was doing ketosis and successfully lost 30 lbs (from 230 to 200 lbs), which had worked for me previously, but I stopped losing weight and I felt horrible. I read Dr. Grace’s work on the bionic fiber protocol online at Two months ago, I changed my diet and added in more protein fruits and vegetables and lowered saturated fat (Whole30 style) and added in the Bionic Fiber protocol and the ultra potent Bifido|Maximus probiotic. I used two bottles of ultra BIFIDO|MAXIMUS and feel better than ever. My liver test ALT went from 60 to 17 in two months and I lost 20 pounds (200 to 180 lbs). I am so pleased with my new body and life style. On stool testing, I had NO Bifidobacteria longum and almost zero Akkermansia. Dr Grace’s probiotic contains Bifidobacteria longum and her prebiotic bionic fiber blend raises both Bifidobacteria longum and Akkermansia.”

-BM, Pleasanton CA


“My cancer biomarkers improved from red to ALL GREEN”

“I will say my energy seems good. My white cell count (WBC) has normalized for the first time in 3 years since chemotherapy and radiation for breast and Stage 1 ovarian cancer. My cancer biomarkers 8OHdG, glutathione and pro-carcinogenic estrogen 4OH1 and 16OH1 ratios are all improved from ‘red’ or ‘yellow’ bad zones to now ALL GREEN. Working with Grace and her protocols, I have noticed all my back acne and PMS quickly disappeared. I am so grateful for her kindness and generosity of time.”

-KR, San Jose CA