this is the kind we use and love
http://www.lifesvigor.com/77098.html
I usually order though lucky vitamin though
Dynamic Health Laboratories, Liquid Acidophilus with Apple & Strawberry Juice 16 oz
All Natural Ingredients
• Milk Free • Fat Free
• Parve • Kosher
• No Egg • No Yeast
• No Soy • No Wheat
• No Preservatives
• No Artificial Colors
• No Flavoring
• No Starch
• No Lactose
• Helps Reduce Cholesterol
• Reduces Yeast Infections
• Synthesizes Essntial Vitamins
• Alleviates Diarrhea, Gas, Constipation, Indigestion
• Improves General Metabolism, Digestion, and Vitality!
• Yucca Shidigera Internally Deodorizes and Purifies the Digestive Tract
• Counteract the Destructive Side Effect of Antibiotics to the Diegestive Tract
ETA: we adjust the dosage size depending on who is taking it