Have you ever heard of Acidophilus Probiotic? If you haven’t, don’t worry! I’m here to give you the lowdown on this fantastic little microorganism. 

Acidophilus Probiotic is a type of bacteria that lives in your gut. Now, before you scrunch up your face and say, “Bacteria? eww!”, let me tell you, Acidophilus Probiotic is actually good for you. 

It’s one of the good guys that keeps your digestive system running smoothly and supports your overall well-being. So, let’s dive in and uncover the significance of Acidophilus Probiotic, shall we?

What is Acidophilus Probiotic?

Acidophilus Probiotic
Source: Canva

Acidophilus (Lactobacillus acidophilus) is a probiotic bacterium that can be found in the mouth, intestines, and vagina. 

Good bacteria like Acidophilus probiotic are essential for your immune and digestive systems. They help maintain an acidic environment in your body, which is necessary to prevent the growth of harmful bacteria. Balancing good and bad bacteria is crucial for your overall health.

Probiotics are beneficial bacteria that are either identical or highly similar to the bacteria naturally present in your body. Every type of probiotic supplement, as well as each strain within that type, can have unique mechanisms of action.

The name of this substance hints at its function, which is to create lactic acid. It achieves this by generating lactase, an enzyme that decomposes lactose, a sugar that can be found in milk, into lactic acid.

Studies have extensively researched L. acidophilus as a probiotic, and the findings suggest that it could offer various health advantages. Nevertheless, it’s crucial to note that there are multiple strains of L. acidophilus, each of which can affect the body differently. [1]

What is Acidophilus Used For? 

Acidophilus probiotic is effective in treating a variety of health conditions. It may help treat: 

  • Vaginal Inflammation
  • Yeast Infections
  • Diarrhea

There are also other potential uses of acidophilus, including relieving the symptoms of: 

  • Constipation
  • Irritable bowel syndrome (IBS)
  • Urinary tract infections 
  • Gum disease 
  • Inflammatory bowel disease (IBD)
  • Lactose Intolerance

Health Benefits of Acidophilus Probiotic

Acidophilus Probiotic
Source: Canva

Scientists are currently exploring the advantages of acidophilus probiotics, and their efficacy is still uncertain. Nonetheless, acidophilus has a lot of potential benefits.

It can encourage the development of beneficial bacteria in the body and possibly even address a range of health issues. Additionally, it may assist in mitigating the adverse effects of specific medications.

Reduces Cholesterol

We do know that high cholesterol levels are harmful to our bodies and may increase the risk of heart disease. 

There’s a study that suggests that some probiotics can help reduce cholesterol levels, and Acidophilus probiotics may be possibly more effective than other types of probiotics. [2][3]

Another study found that taking Acidophilus Probiotic and another probiotic for 6 weeks significantly lowered total and LDL cholesterol, but also the good HDL cholesterol. [4]

Prevents and Reduces Diarrhea

Acidophilus Probiotic
Source: Canva

There are various causes of diarrhea, one of which is bacterial infections. It can be harmful if it persists for an extended period of time as it can cause fluid loss and, in some instances, dehydration.

There are studies that showed that probiotics like L. acidophilus may help prevent and reduce diarrhea associated with various diseases. [5]

Another amazing study showed that when consumed in combination with another probiotic, L. acidophilus may help reduce diarrhea caused by radiotherapy in adult cancer patients. [6]

Helps Treat and Prevent Vaginal Infections

Vaginal infections, such as vaginosis and vulvovaginal candidiasis, are prevalent. Research suggests that L. acidophilus may be effective in both treating and preventing these types of infections.

The most common bacteria in the vagina is Lactobacilli. They produce lactic acid, preventing the growth of other harmful bacteria. [7]

Several research studies have discovered that consuming L. acidophilus as a probiotic supplement can help prevent and treat vaginal infections by boosting the amount of lactobacilli present in the vagina. [8][9]

Promotes Weight Loss

Acidophilus Probiotic
Source: Canva

There is some indication that the consumption of probiotics, particularly when multiple species are taken together, could potentially aid in weight loss. However, it is not entirely clear whether L. acidophilus on its own has any significant effect. [10]

According to the information available, L. acidophilus was identified as a species that could contribute to weight gain. However, it’s important to note that the majority of studies were conducted on farm animals rather than humans.

Side Effects of Acidophilus Probiotic 

Acidophilus Probiotic
Source: Canva

Although Acidophilus is generally deemed safe for use, there are some minor potential side effects associated with it. Some examples of these side effects include:

  • Diarrhea
  • Constipation 
  • Mild upset stomach 
  • Gas and bloating

In case you exhibit symptoms of a severe allergic reaction, it is advisable to dial 911 or visit the nearest emergency room. Symptoms of an allergic reaction can include:

  • Itching
  • Rash
  • Difficulty breathing
  • Dizziness
  • Hives and swelling of the face, lips, throat, or tongue. 

Although uncommon, there is a possibility of severe infections. It is recommended that individuals with any of the mentioned conditions consult with their healthcare provider prior to using acidophilus.

  • Central lines: Blood infections have been reported in individuals with central lines who have taken Acidophilus. Central lines are slender, bendable tubes that are inserted into a major vein in your body.
  • Liver scarring: Individuals with cirrhosis have experienced infections due to the use of Acidophilus.
  • Digestive system diseases: People with gastrointestinal disorders such as inflammatory bowel disease and short bowel syndrome have been found to develop infections due to the use of Acidophilus.
  • Weakened immune system: Acidophilus has been known to result in bloodstream infections among individuals who have serious ailments such as HIV/AIDS or who are undergoing cancer chemotherapy. This also applies to those who are on medications to avoid organ transplant rejection.
  • Damaged heart valves: Infections in the heart chambers and valves have been attributed to the use of Acidophilus.

How Much Acidophilus Should I Take? 

Acidophilus Probiotic
Source: Canva

It’s important to collaborate with your healthcare provider to determine the appropriate amount of acidophilus to consume. If you’re taking acidophilus as a supplement, the suggested daily dosage is between 50 million and 100 billion colony-forming units (CFUs). 

CFUs are a microbiology measurement that estimates the number of bacterial or fungal cells in a pill. This dose can be taken for a maximum of six months. For children, the recommended daily amount is between 100 million and 50 billion CFUs, and it should be taken for no more than three months.


L. acidophilus is a type of bacteria that is typically present in your intestines and is essential for good health. It has the capacity to generate lactic acid and communicate with your immune system, which may help combat and treat symptoms of diverse illnesses.

To boost the concentration of L. acidophilus in your gut, it is recommended to consume fermented foods, such as the ones previously listed. 

Alternatively, L. acidophilus supplements can be advantageous, notably if you have any of the conditions discussed in this article. Whether it is received through food or supplements, L. acidophilus can offer health benefits for all.


According to research, acidophilus is commonly used as a probiotic and is generally considered safe. However, it’s not approved by the FDA to treat any health conditions, and the agency hasn’t studied it to determine its safety or effectiveness.

It’s important to note that acidophilus should never be used in place of prescription medications. If your healthcare provider recommends using acidophilus, they have weighed the benefits against any potential risks.
To keep your gut healthy, it’s recommended that healthy adults take anywhere from 1 to 15 billion CFUs on a daily basis. In order to prevent antibiotic-related diarrhea, certain doctors suggest taking L. acidophilus about 2 to 3 hours following the antibiotic.
Studies have suggested that acidophilus could be more efficient compared to other varieties of probiotics. These studies have investigated the effectiveness of probiotics on their own, as well as in milk drinks that have been fermented by probiotics.

Editorial References And Fact-Checking

  1. Ljungh, A., & Wadström, T. (2006). Lactic acid bacteria as probiotics. Current issues in intestinal microbiology, 7(2), 73–89.
  2. Cho, Y. A., & Kim, J. (2015). Effect of Probiotics on Blood Lipid Concentrations: A Meta-Analysis of Randomized Controlled Trials. Medicine, 94(43), e1714. https://doi.org/10.1097/MD.0000000000001714
  3. Shimizu, M., Hashiguchi, M., Shiga, T., Tamura, H. O., & Mochizuki, M. (2015). Meta-Analysis: Effects of Probiotic Supplementation on Lipid Profiles in Normal to Mildly Hypercholesterolemic Individuals. PloS one, 10(10), e0139795. https://doi.org/10.1371/journal.pone.0139795
  4. Rerksuppaphol, S., & Rerksuppaphol, L. (2015). A Randomized Double-blind Controlled Trial of Lactobacillus acidophilus Plus Bifidobacterium bifidum versus Placebo in Patients with Hypercholesterolemia. Journal of clinical and diagnostic research : JCDR, 9(3), KC01–KC4. https://doi.org/10.7860/JCDR/2015/11867.5728
  5. Sazawal, S., Hiremath, G., Dhingra, U., Malik, P., Deb, S., & Black, R. E. (2006). Efficacy of probiotics in prevention of acute diarrhoea: a meta-analysis of masked, randomised, placebo-controlled trials. The Lancet. Infectious diseases, 6(6), 374–382. https://doi.org/10.1016/S1473-3099(06)70495-9
  6. Chitapanarux, I., Chitapanarux, T., Traisathit, P., Kudumpee, S., Tharavichitkul, E., & Lorvidhaya, V. (2010). Randomized controlled trial of live lactobacillus acidophilus plus bifidobacterium bifidum in prophylaxis of diarrhea during radiotherapy in cervical cancer patients. Radiation oncology (London, England), 5, 31. https://doi.org/10.1186/1748-717X-5-31
  7. Ravel, J., Gajer, P., Abdo, Z., Schneider, G. M., Koenig, S. S., McCulle, S. L., Karlebach, S., Gorle, R., Russell, J., Tacket, C. O., Brotman, R. M., Davis, C. C., Ault, K., Peralta, L., & Forney, L. J. (2011). Vaginal microbiome of reproductive-age women. Proceedings of the National Academy of Sciences of the United States of America, 108 Suppl 1(Suppl 1), 4680–4687. https://doi.org/10.1073/pnas.1002611107
  8. Mezzasalma, V., Manfrini, E., Ferri, E., Boccarusso, M., Di Gennaro, P., Schiano, I., Michelotti, A., & Labra, M. (2017). Orally administered multispecies probiotic formulations to prevent uro-genital infections: a randomized placebo-controlled pilot study. Archives of gynecology and obstetrics, 295(1), 163–172. https://doi.org/10.1007/s00404-016-4235-2
  9. Ya, W., Reifer, C., & Miller, L. E. (2010). Efficacy of vaginal probiotic capsules for recurrent bacterial vaginosis: a double-blind, randomized, placebo-controlled study. American journal of obstetrics and gynecology, 203(2), 120.e1–120.e1206. https://doi.org/10.1016/j.ajog.2010.05.023
  10. Zhang, Q., Wu, Y., & Fei, X. (2015). Effect of probiotics on body weight and body-mass index: a systematic review and meta-analysis of randomized, controlled trials. International journal of food sciences and nutrition, 67(5), 571–580. https://doi.org/10.1080/09637486.2016.1181156


  • Kim Monasterial, BSN

    Kim is a Registered Nurse and has been a medical freelance writer for more than six years. Starting off as a writer, Kim moved to proofreading and editing all the articles posted on HealthPlugged. She’s an enthusiast for health and wellness, being one to keep herself fit and adventurous for outdoor activities. LinkedIn


Kim is a Registered Nurse and has been a medical freelance writer for more than six years. Starting off as a writer, Kim moved to proofreading and editing all the articles posted on HealthPlugged. She’s an enthusiast for health and wellness, being one to keep herself fit and adventurous for outdoor activities. LinkedIn