Probiotics are good, “friendly” bacteria that can have many health benefits. These health benefits include helping with a better immune system in patients suffering from irritable bowel disease or syndromes such as Crohn's disease and ulcerative colitis. Probiotics help digest dairy products for people with lactose intolerance (Duvauchelle 1). They also provide balance to those who must take antibiotics and help relieve side effects such as gas and cramps (“Probiotic Symptoms, Causes, Treatment” 2). Vitamin A, vitamin K, calcium, potassium and protein are a list. Among the many supplements contained in probiotics (Jerkunica, Bailey and Gall 1), probiotics play one of the most important roles in the immune response (Jerkunica, Bailey and Gall 1). However, there are many different types of probiotics that claim to work. better than others. With refrigerated and non-refrigerated probiotics on the market, many are wondering what the huge difference is. There are different types of bacteria that are beneficial for probiotics. Although there are billions of beneficial bacteria, they come from just one strain. Probiotic strains include Lactobacillus, Probiotic Acidophilus, Lactobacillus GG, Bifido, Bifidobacterium Lactis and Bifidobacterium Infantis (Jerkunica, Bailey and Gall 1). The most popular bacterial strain for probiotics is Lactobacillus acidophilus. It is known to act as a defense system against harmful bacteria when taking antibiotics (Jones 1). Lactobacillus has at least 140 known benefits for liver function, the immune system, the digestive tract and more (Jerkunica, Bailey and Gall 1). This bacteria is well known for fighting cramps, diarrhea and gas. Scientific evidence has shown problems... middle of article ......s, causes, treatment - What are the health benefits of probiotics on MedicineNet. " Medicinenet.com. Web. November 04, 2011. .Terry, Sarah. "Recommended Probiotics | LIVESTRONG.COM." LIVESTRONG.COM - Lose weight and get fit with diet, nutrition and fitness tools | LIVESTRONG.COM. May 26, 2011. Web. November 4, 2011. .VSL#3. Advertisement .VSL#3 The Living Shield Web. November 4, 2011. .Wasserman, Robin. LIVESTRONG.COM - Lose Weight and Get Fit with Diet, Nutrition and Fitness Tools | LIVESTRONG.COM. March 28, 2011. Web. November 4. 2011. .