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Swanson Probiotics


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Retail $10.99
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Veg Drcaps Size:
O, Pill Size Guide
60 Veg Drcaps

"I have been using this product for a year. It has been very beneficial in keeping me regular. I take one per day. I just reordered another year's supply." ~ product review by chewy

  • Delivers 3 billion viable organisms of beneficial bacteria

  • Features four different strains of bacteria

  • Vegetarian; dairy-free

Swanson Probiotic-4 is a broad spectrum probiotic delivering 3 billion viable organisms of beneficial bacteria from four select strains including Bifidobacterium lactis, Lactobacillus casei, Lactobacillus acidophilus and Bifidobacterium bifidum -- all in convenient, easy-to-take vegetarian capsules.

Product Label

Supplement Facts

Serving Size 1 Veggie Capsule

  Amount Per Serving % Daily Value
ProBiotic-4 Probiotic Blend 3 billion viable organisms† *
Bifidobacterium lactis 1.5 billion viable organisms† *
Lactobacillus casei 750 million viable organisms† *
Lactobacillus acidophilus 375 million viable organisms† *
Bifidobacterium bifidum 375 million viable organisms† *
NutraFlora® scFOS®(short-chain fructooligosaccharides) (providing minimum 95% total fructooligosaccharides) 125 mg *

*Daily Value not established.

†At time of manufacture.

Store as recommended at 64°–72°F.

Other ingredients: Hypromellose (vegetable capsule), microcrystalline cellulose (plant fiber), may contain one or both of the following: magnesium stearate, silica.

Suggested Use: As a dietary supplement, take one veggie capsule in the evening with food and water.

DRCAPS and DRCAPS and Design are trademarks used under license.

NutraFlora® and scFOS® are registered trademarks of GTC Nutrition Company.

Terms and Ingredient Definitions

Swanson Probiotics ProBiotic-4 Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

ProBiotic-4 4.6 5 135 173
I did the yogurt making test and it was a long time to gel up so I am thinking that the quality is average but the price is very good. April 21, 2014
Didn't work for me I eat a healthy diet: very little sugar, no white bread, only whole grains, raw+cooked vegetables. I knew this probiotic was wimpy but with my diet I thought it would be enough. Guess not. April 18, 2014
I recommend this product I have been using this product for a year. It has been very beneficial in keeping me regular. I take one per day. I just reordered another year's supply. March 9, 2014
probiotic 4 Seems to do the trick for me...keeps everything running along smoothly .I just take one in the morning and one at night... The value is great compared to some others I have tried that are much more expensive .this is all that I need. February 9, 2014
My Friendly Flora With 87% of the body's immune system in the gut, I depend on this product for my friendly flora. December 31, 2013
Great item! Best pro-biotic Swanson sells. December 29, 2013
love it! Have tried other probiotics but not with the same success I have with Swansons. Reasonably priced, convenient and quick shipping make it so easy to never run outl December 14, 2013
Quality Product for Less This product compares to the higher priced probiotics one finds in the drug store. Swansons offers it for much less at a similar high quality. December 13, 2013
Great value Great value for the price. Works just as well if not better than the more expensive brands. December 12, 2013
Works For Me It's done the trick for my need and I am very thankful for that. I did call the phone number of Swanson to ask a couple questions before I ordered this for the first time - just to make sure this is what I wanted and I was comfortable with the answers I got from the very informative phone rep. So I ordered me some & have been satisfied ever since. Thank you! December 11, 2013
my trial of this product This product seemed to give me palpitations after I took it. Anyone else have that problem. December 7, 2013
good value shopped around and found this product to be the best value.i have used it for years and have always been satisfied. October 31, 2013
Probiotics Work! I have tried other probiotics and none of them work as well as Swanson's. I have recommended and introduced several friends and family members to them. They are always amazed at the difference they make. Thank you Swansons for making an excellent product and at such a great price! October 31, 2013
Better than the hard pill At least these should be alive after hydration. Others that I've tried look like they're a solid pill that couldn't have anything that would ever come back to life. October 26, 2013
Tests Positive I originally wrote a negative post on PB-4. This was due to a test I performed comparing it to another probiotic. However I asked Swanson to remove the post so I could post a more accurate and fair evaluation. I tested PB-4 alongside a product made by Schiff called Digestive Advantage - a probiotic that my wife takes that comes in blister packs and does not require refrigeration. I took three small jars, filled them each with 1/4 cup of milk. In 1 jar I mixed in 1/2 teaspoon of white flour as a control. In far 2 I emptied one cap of PB4 and in jar 3, I emptied a cap of Digestive Advantage. After 4 hours the DA started to turn the milk into a yogurt like gel/solid while the PB4 did nothing. After 10 hours there was still no activity in the PB4 although it allegedly has 3 bil organisms vs only 1 bil in the DA. Meanwhile the DA continued it's activity and started separating the yogurt into a solid and a liquid. So I posted the result as the PB$ being inactive. However I tested again. After 16 hours the PB4 began to form into a gel/solid. I left both substances in jars for a total of 48 hours. The PB4 went through the same cycle as the DA, it just took longer. Meanwhile the control (milk with flour) did nothing. The PB4 definitely has live activity. My guess is that the reason that it took longer to act is that the DA has other enzymes mixed in with it that may have caused quicker activity or perhaps it had more surviving organisms due to the blister packaging. I had heard that probiotics that are not blister packed tend to lose their effectiveness if not refrigerated. I thought maybe the PB4's has lost their effectiveness either due to being shipped over the summer or from not being refrigerated at Swanson. I emailed Swanson and was told that they keep their probiotc products in temperature-controlled storage. I was also told that lack of refrigeration during shipping hasn't shown to be an issue. In fact, they have shipped probiotics to some very warm climates which have been returned and have still tested above the stated level of activity. I think it's great that Swanson keeps their products in cool storage. Caring that much about what they sell has caused me to feel even better about buying other products from them. With regards to the probiotics, I will stick with the PB4 since it is so much cheaper than the Schiff DA and others that are out there. I don't need to be too concerned about having probiotics that don't need refrigeration because I have a refrigerator, and in fact refrigerate all of my supplements to keep them fresher. As an extra precaution I will order probiotics and other temperature sensitive products over the winter months just to make sure they retain maximum freshness and effectiveness. One last thing. If you ever want to test your probiotic, simply dissolve one cap in about 1/4 cup of milk and leave at room temp for roughly 24 hours. Sorry this was such a long entry. I just wanted to set the record straight. I hope this has been helpful. October 17, 2013
not a good buy When I took this probiotic it made me constipated. I have tried others and this is the only one that has made me feel this way. I would not buy this again. If I knew more about probiotic strains I may be able to narrow down the fact that whatever my body needs is not in this type of probiotic. October 9, 2013
Great product for the price Seems to work as good as other probiotics at higher prices. Have been taking for quite a long time. Would reorder again. No bad side effects. Would highly recomment to others looking for a good probiotic with value pricing. September 28, 2013
great healthy flora for digestive system! powerful, effective September 26, 2013
Better than the rest This is not only a better choice for probiotics, but you are getting more for your money as well. September 17, 2013
Great Product I have been using this for a few years now works great, I only wish it came in a larger quantity. September 14, 2013
Good product I have been taking this for several years and wouldn't go a day without it. When taken with Digest Basic, I remain normal and totally balanced in my digestive system. September 6, 2013
excellent product I've used it for a just a few weeks, and its working, a healthy gut, a healthy body....thanks August 29, 2013
PRO Biotics This is a great way to help have a healthy gut and that usually means a healthier you.. so draw your own conclusions !! August 19, 2013
Faithful standby Always reliable when I need it August 16, 2013
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