PGut VitaBac Immune Pro

Strengthens your immunity and Rejuvenates
B. adolescentis added to boost vaccine efficacy

PGut VitaBac Immune Pro

  • Local research proved that Bifidobacterium adolescentis can boost the efficacy of vaccine and strengthen body protection
  • Patented Lactobacillus plantarum GKM3 can boost immunity and maintain the balance of intestinal beneficial bacteria
  • Quadruple Bifidobacterium helps increase the production of antibodies and reduce the risk of Long-COVID symptoms
  • Each pack contains 20-billion professional probiotics to fulfill your daily need
  • Highly acid- and bile-salt- resistant, ensure maximal viability at the gut
  • Postbiotics HK-LP (essence from Probiotics) can rapidly balance the intestinal microecology and reduce gastrointestinal discomfort
  • Triple prebiotics can strengthen the probiotic activity and improve gut detoxification
  • Manufactured according to GMP/ISO22000 standard, safe and reliable
  • Heavy metal test passed
  • No addition of flavourings, artificial color or gluten


Suitable for

Sensitive respiratory tract

Bad breath and other oral problems

Weak immunity and always feel tired or fatigue

Post-illness intestinal discomfort

Product Characteristics
Gut microbiome can directly affect immune system, metabolism and detoxification. Probiotics can boost immunity and rejuvenate.

After the outbreak of the COVID-19 pandemic, gastrointestinal discomfort has became more frequent in majority of people. This phenomenon is called “Digestive Symptoms of Coronavirus”, which is related to the overgrowth of intestinal harmful bacteria. Symptoms include abdominal pain, changes in bowel habit, nausea, indigestion, bloating and gastroesophageal reflux, etc. Recent research prove that Lactobacillus acidophilus plays a key role in the prevention of antibiotic-associated diarrhea (AAD) in COVID-19 patients[1]. Bifidobacteria such as Bifidobacterium longum can help reduce and prevent the symptoms of Long-COVID, especially gastrointestinal discomfort such as abdominal pain, diarrhea and nausea[2].

Researches by local universities pointed out that 85% of Hong Kong people lack Bifidobacterium adolescentis. Clinical studies also found that B. adolescentis can regulate antibody response after vaccination and play a key role in regulating the efficacy of vaccine[3]. There are also research data showing that COVID-19 patients lack several species of Bifidobacteria, which is related to the severity of symptoms[4]. The quadruple-Bifidobacterium formula in PGut VitaBac Immune Pro helps strengthen the body defenses, including Bifidobacterium bifidum, which can increase the number of interleukins[5], regulating and enhancing immune system. Bifidobacterium longum also helps regulate the resting neural activity and improve mental fatigue[6].
Most modern citizens susceptible to respiratory tract discomfort are not only caused by the increase of external allergenic substances, but also the intestinal microecology imbalance, which leads to problems in immune regulation. For example, hyperactive Th2 cells can easily lead to allergic diseases such as sneezing, while the trachea will be more susceptible to allergens. PGut VitaBac Immune Pro contains Lactobacillus rhamnosus GG to help reduce upper respiratory allergic reactions and morbidity[7]. The product also contains Lactobacillus paracasei, which can modulate immune response, reduce the occurrence of hyperactive immune cells[8] and the onset time of upper respiratory tract sensitivity[9].
Bad breath usually comes from the production of volatile sulfide during the breakdown of proteins in food debris by oral bacteria. On the other hand, drinking and smoking habits, mouth cavity and gastrointestinal diseases, drug therapy, etc. may also lead to bad breath. Researches have pointed out that Lactobacillus reuteri helps reduce the amount of inflammatory cytokine inside gingival crevicular fluid of patients with gingivitis and tooth decay, thus can improve bad breath caused by inflammation[10]. Bacteriocin produced by Lactobacillus reuteri and Lactobacillus paracasei can suppress the reproduction of oral harmful bacteria, which can help improve tooth decay and periodontal disease[11].
Essence extracted from heat-killed Lactobacillus plantarum is stable postbiotics. Studies show that postbiotic Lactobacillus plantarum can improve immunity, inhibit hyperactive immune cells and allergic antibodies. It can also regulate gut microbiota and promote the growth of beneficial bacteria, hence restore the balance of intestinal microecology.

Product Highlight

10X Upgraded Bifidobacterium adolescentis can boost the efficacy of vaccine and strengthen body protection

Quadruple-Bifidobacterium formula helps increase the production of antibodies and reduce the risk of Long-COVID symptoms

Suitable for vegetarians and people with general eating habits.

All daily-needed probiotics in one pack

Product ingredients

Effective Postbiotic HK-LP

✔︎ Enhance probiotic activities

✔︎ Rapidly balance intestinal microecology

High-quality Prebiotic Combination

✔︎ Galacto-oligosaccharides (GOS)

✔︎ Fructo-oligosaccharides (FOS)

✔︎ Isomalto-oligosaccharide (IMO)

20-billion Active Probiotics

✔︎ Lactobacillus plantarum GKM3

✔︎ Lactobacillus plantarum GKK1

✔︎ Bifidobacterium lactis GKK2

✔︎ Lactobacillus paracasei GKS6

✔︎ Lactobacillus reuteri GKR1

✔︎ Lactobacillus acidophilus GKA7

✔︎ Lactobacillus rhamnosus GG

✔︎ Bifidobacterium longum GKL7

✔︎ Bifidobacterium bifidum GKB2

✔︎ Bifidobacterium adolescentis GKA5

PGut VitaBac Immune Pro has passed gastric acid & bile salt tolerance test

Important Messages


✔︎ 30 Sachet/box (Each sachet contains 20-billion active probiotics)

✔︎ 10 active probiotics + 3 prebiotics + postbiotics


✦ Instruction of use: Consume together with food and drink (E.g. milk and juice)

✦ Suggested Dosage: 1 pack daily before/after meal


Other information

  • Origin: Taiwan
  • Store in fridge or in a cool and dry area. Avoid sunlight.
  • Please inform your doctor if you are pregnant, taking medicine or any treatment.


  1. Kullar, R., Johnson, S., McFarland, L. V., & Goldstein, E. J. (2021). Potential roles for probiotics in the treatment of COVID-19 patients and prevention of complications associated with increased antibiotic use. Antibiotics, 10(4), 408.
  2. Mirashrafi, S., Moravejolahkami, A. R., Zehi, Z. B., Kermani, M. A. H., Bahreini-Esfahani, N., Haratian, M., … & Pourhossein, M. (2021). The efficacy of probiotics on virus titres and antibody production in virus diseases: A systematic review on recent evidence for COVID-19 treatment. Clinical Nutrition ESPEN, 46, 1-8.
  3. Ng, S. C., Peng, Y., Zhang, L., Mok, C. K., Zhao, S., Li, A., … & Tun, H. M. (2022). Gut microbiota composition is associated with SARS-CoV-2 vaccine immunogenicity and adverse events. Gut, 71(6), 1106-1116.
  4. Hazan, S., Stollman, N., Bozkurt, H. S., Dave, S., Papoutsis, A. J., Daniels, J., … & Borody, T. J. (2022). Lost microbes of COVID-19: Bifidobacterium, Faecalibacterium depletion and decreased microbiome diversity associated with SARS-CoV-2 infection severity. BMJ open gastroenterology, 9(1), e000871.
  5. Hong, N., Ku, S., Yuk, K., Johnston, T. V., Ji, G. E., & Park, M. S. (2021). Production of biologically active human interleukin-10 by Bifidobacterium bifidum BGN4. Microbial Cell Factories, 20(1), 1-14.
  6. Wang H, Braun C, Murphy EF, Enck P: Bifidobacterium longum 1714™ strain modulates brain activity of healthy volunteers during social stress. The American journal of gastroenterology 2019, 114(7):1152.
  7. Kumpu, M., Kekkonen, R. A., Korpela, R., Tynkkynen, S., Järvenpää, S., Kautiainen, H., … & Winther, B. (2015). Effect of live and inactivated Lactobacillus rhamnosus GG on experimentally induced rhinovirus colds: randomised, double blind, placebo-controlled pilot trial. Beneficial microbes, 6(5), 631-639.
  8. Benyacoub J, Bosco N, Blanchard C, Demont A, Philippe D, Castiel-Higounenc I, Guéniche A: Immune modulation property of Lactobacillus paracasei NCC2461 (ST11) strain and impact on skin defences. Beneficial microbes 2014, 5(2):129-136.
  9. Jespersen, L., Tarnow, I., Eskesen, D., Morberg, C. M., Michelsen, B., Bügel, S., … & Calder, P. C. (2015). Effect of Lactobacillus paracasei subsp. paracasei, L. casei 431 on immune response to influenza vaccination and upper respiratory tract infections in healthy adult volunteers: a randomized, double-blind, placebo-controlled, parallel-group study. The American journal of clinical nutrition, 101(6), 1188-1196.
  10. Karbalaei, M., Keikha, M., Kobyliak, N. M., Zadeh, Z. K., Yousefi, B., & Eslami, M. (2021). Alleviation of halitosis by use of probiotics and their protective mechanisms in the oral cavity. New Microbes and New Infections, 42, 100887.
  11. Bonifait, L., Chandad, F., & Grenier, D. (2009). Probiotics for oral health: myth or reality?. Journal of the Canadian Dental Association, 75(8).

Reference Test Laboratory: Biotech Research Institute, No.402, Sec. 2, Jinling Rd., Pingzhen Dist., Taoyuan City 324, Taiwan (R.O.C.)

Disclaimer: For details, please refer to the label on the product. The picture above is for reference only. The real object should be considered as final. This product is not registered under the Pharmacy and Poisons Ordinance or the Chinese Medicine Ordinance. Any claim made for it has not been subject to evaluation for such registration. This product is not intended to diagnose, treat or prevent any disease.