Source Naturals FOS Powder 7.05 oz (200 g)
Description Dietary Supplement (Fructooligosaccharides) Probiotic Enhancer Source Naturals FOS is a complex of fructooligosaccharides (FOS) - a group of naturally occurring carbohydrates that can help promote the growth of beneficial flora in the gastrointestinal tract. The body normally maintains a balance of "friendly" flora in the intestines; unfortunately factors such as improper diet, stress, gastrointestinal problems, and use of antibiotics may disrupt this delicate balance. FOS are long chain sugars that are indigestible by humans, but serve as "food" for friendly flora helping to increase their numbers in the body. Scientific research conducted in Japan has shown that FOS are selectively used by friendly flora such as bifidobacteria and lactobacilli. Suggested Use 1 rounded teaspoon daily, mixed in water or juice as desired. Other Ingredients Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no starch, preservatives, or artificial color, flavor or fragrance.
Description Dietary Supplement (Fructooligosaccharides) Probiotic Enhancer Source Naturals FOS is a complex of fructooligosaccharides (FOS) - a group of naturally occurring carbohydrates that can help promote the growth of beneficial flora in the gastrointestinal tract. The body normally maintains a balance of "friendly" flora in the intestines; unfortunately factors such as improper diet, stress, gastrointestinal problems, and use of antibiotics may disrupt this delicate balance. FOS are long chain sugars that are indigestible by humans, but serve as "food" for friendly flora helping to increase their numbers in the body. Scientific research conducted in Japan has shown that FOS are selectively used by friendly flora such as bifidobacteria and lactobacilli. Suggested Use 1 rounded teaspoon daily, mixed in water or juice as desired. Other Ingredients Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no starch, preservatives, or artificial color, flavor or fragrance.
Description Dietary Supplement (Fructooligosaccharides) Probiotic Enhancer Source Naturals FOS is a complex of fructooligosaccharides (FOS) - a group of naturally occurring carbohydrates that can help promote the growth of beneficial flora in the gastrointestinal tract. The body normally maintains a balance of "friendly" flora in the intestines; unfortunately factors such as improper diet, stress, gastrointestinal problems, and use of antibiotics may disrupt this delicate balance. FOS are long chain sugars that are indigestible by humans, but serve as "food" for friendly flora helping to increase their numbers in the body. Scientific research conducted in Japan has shown that FOS are selectively used by friendly flora such as bifidobacteria and lactobacilli. Suggested Use 1 rounded teaspoon daily, mixed in water or juice as desired. Other Ingredients Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no starch, preservatives, or artificial color, flavor or fragrance.
Description Dietary Supplement (Fructooligosaccharides) Probiotic Enhancer Source Naturals FOS is a complex of fructooligosaccharides (FOS) - a group of naturally occurring carbohydrates that can help promote the growth of beneficial flora in the gastrointestinal tract. The body normally maintains a balance of "friendly" flora in the intestines; unfortunately factors such as improper diet, stress, gastrointestinal problems, and use of antibiotics may disrupt this delicate balance. FOS are long chain sugars that are indigestible by humans, but serve as "food" for friendly flora helping to increase their numbers in the body. Scientific research conducted in Japan has shown that FOS are selectively used by friendly flora such as bifidobacteria and lactobacilli. Suggested Use 1 rounded teaspoon daily, mixed in water or juice as desired. Other Ingredients Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no starch, preservatives, or artificial color, flavor or fragrance.
in 6 offers
The lowest price for Source Naturals FOS Powder 7.05 oz (200 g) right now is $34.87 at iHerb, compared across 6 retailers.
The all-time low was $18.10 on 20 Dec 2025 — today's price is 93% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 8 June 2026.
Last updated at 08/06/2026 18:38:02
Source Naturals FOS (Fructooligosaccharides), 100 Tabs 1000 MG
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Source Naturals, FOS Powder, 7.05 oz (200 g)
Delivery $40
Source Naturals, FOS, 100 Tablets
Delivery $7.90
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
FOS (Fructooligosaccharides) 1,000 мг 100 таблетки | Source Naturals
Free next-day delivery
Source Naturals FOS Powder 7.05 oz (200 g)
Delivery between 9–20 June $28.35
FOS Fructooligosaccharides 1000mg - 200 Tablets | Source Naturals
Delivery $29
originally posted on iherb.com
The powder was very quickly moistened inside it bottle even I close the cap well, maybe because I use the product in the summer humid season.
originally posted on iherb.com
Source naturals is my favorite source for FOS! I use it to help with calcium absorption and gut biome since it is our friendly bacteria that we need to keep in balance with the bad. Taking 1 teaspoon of FOS every morning, dissolved in water, gets rid of candida quickly. Pretty amazing! Not only was the product readily available through iherb, but the price was significantly better than through Amazon, which I’ve been purchasing this through for at least seven years. I even received additional savings by registering with iherb…yay! I now know which company is my go to source for my favorite FOS! Wish I had figured this out years ago. As for the product itself, it arrived quickly, packaged well, and much more conveniently. I have never had a problem with Source ... MoreSource naturals is my favorite source for FOS! I use it to help with calcium absorption and gut biome since it is our friendly bacteria that we need to keep in balance with the bad. Taking 1 teaspoon of FOS every morning, dissolved in water, gets rid of candida quickly. Pretty amazing! Not only was the product readily available through iherb, but the price was significantly better than through Amazon, which I’ve been purchasing this through for at least seven years. I even received additional savings by registering with iherb…yay! I now know which company is my go to source for my favorite FOS! Wish I had figured this out years ago. As for the product itself, it arrived quickly, packaged well, and much more conveniently. I have never had a problem with Source Naturals. Quality from beginning to end.
originally posted on iherb.com
I bought it for a sugar replacement. The taste is mild and not sweet enough as a sweetener. But not too bad
| Serving Size | 1 Teaspoon |
| Amount Per Serving | % Daily Value |
| Total Carbohydrate | 3 g |
| Dietary Fiber | 3 g |
| Sodium | 15 mg |
Source Naturals FOS (Fructooligosaccharides), 100 Tabs 1000 MG
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Source Naturals, FOS Powder, 7.05 oz (200 g)
Delivery $40
Source Naturals, FOS, 100 Tablets
Delivery $7.90
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
FOS (Fructooligosaccharides) 1,000 мг 100 таблетки | Source Naturals
Free next-day delivery
Source Naturals FOS Powder 7.05 oz (200 g)
Delivery between 9–20 June $28.35
The powder was very quickly moistened inside it bottle even I close the cap well, maybe because I use the product in the summer humid season.
Source naturals is my favorite source for FOS! I use it to help with calcium absorption and gut biome since it is our friendly bacteria that we need to keep in balance with the bad. Taking 1 teaspoon of FOS every morning, dissolved in water, gets rid of candida quickly. Pretty amazing! Not only was the product readily available through iherb, but the price was significantly better than through Amazon, which I’ve been purchasing this through for at least seven years. I even received additional savings by registering with iherb…yay! I now know which company is my go to source for my favorite FOS! Wish I had figured this out years ago. As for the product itself, it arrived quickly, packaged well, and much more conveniently. I have never had a problem with Source ... MoreSource naturals is my favorite source for FOS! I use it to help with calcium absorption and gut biome since it is our friendly bacteria that we need to keep in balance with the bad. Taking 1 teaspoon of FOS every morning, dissolved in water, gets rid of candida quickly. Pretty amazing! Not only was the product readily available through iherb, but the price was significantly better than through Amazon, which I’ve been purchasing this through for at least seven years. I even received additional savings by registering with iherb…yay! I now know which company is my go to source for my favorite FOS! Wish I had figured this out years ago. As for the product itself, it arrived quickly, packaged well, and much more conveniently. I have never had a problem with Source Naturals. Quality from beginning to end.
I bought it for a sugar replacement. The taste is mild and not sweet enough as a sweetener. But not too bad
I’m just learning to use FOS in my diet. It is a product used often in my new healthy gut eating. I find this powder to mix well and I don’t taste it in my shakes.
Fart,Fart, Fart! If you are doing pre-biotics, you need to be alone at work or at home
It works really well and helps me maintain my health, mood, and quality of life. I've noticed a improvement in the overall quality of my life since taking it. I would recommend this product to anyone who wants to improve their health, mood, and well-being!
peace, i've used this product many years ago, but became unavailable in local stores & online, in fact all fos products disappeared by all brands. when i 1st utilized this product it seems like 15 years ago or so, i had constant loose bowels ever since the doctor had me do 3 types of anti-biotics for 1 month & it was discovered i have a life long injury of a worn out completely cartilage between lumbar vertebrae so they rub bone on bone, painful, that now can't grow back once all gone, waited 10 years too long to see a doctor as to hazards from my heavy lifting laborious job for decades. so anytime i lift even the lightest object my bowels would go, in research about what pro-biotics are that was told me when i went back to doctors office when finished the 1 month ... Morepeace, i've used this product many years ago, but became unavailable in local stores & online, in fact all fos products disappeared by all brands. when i 1st utilized this product it seems like 15 years ago or so, i had constant loose bowels ever since the doctor had me do 3 types of anti-biotics for 1 month & it was discovered i have a life long injury of a worn out completely cartilage between lumbar vertebrae so they rub bone on bone, painful, that now can't grow back once all gone, waited 10 years too long to see a doctor as to hazards from my heavy lifting laborious job for decades. so anytime i lift even the lightest object my bowels would go, in research about what pro-biotics are that was told me when i went back to doctors office when finished the 1 month of anti-biotics, i was told in a soft barely audible tone that now i need to do pro-biotics the rest of my life daily, not knowing about this stuff, researched pro-biotics on internet. claimed fos (fructooligosaccharides) is what the good breathing bacteria need as food, a carbohydrate in plants with jerusalem artichokes having the most, that i believe the product claimed is made of. & i need to take it along with the pro-biotics so they can survive the journey through the stomach acid into the upper intestinal tract where they live. so finding the product again because the problem has flared up, it seems a new prescription to help my breathing from toxic particles substance breathed in daily for decades on the job kept getting worse, difficult breathing in cold, just crossing a room, didn't read the paper work that comes with prescription cause too stressed, so when able i read it had dairy, i am allergic to dairy & am a vegan, it seemed caused the loose bowels, being a vegan following doctors advice on proper nutrition to keep my injury from worsening, that also came about from lack of proper nutrients daily. but on the fos bottle it said california found product to cause birth defects & cancer, i took it as a fraud, probably some company competing, but haven't been able to afford any pro-biotics yet, hope to before i use it up. my bowels have gotten better a little, but have been carry weight that counter acts any help, can't get out of carry what is need for daily living. in past just doing this product, i was told will multiply the good breathing bacteria 3 to 4 times their amount, & it would restore normal bowel movemengt by itself, & it did, & also helped my breathing that was very difficult, like a miracle.
I believe it is necessary for me to supplement with high quality products. I have tried to use this product, but I kept getting reactions to it. It’s the second product from Source Naturals that I react to. On the label of the product it says that it was not manufactured with gluten, soy, etc, but there’s no mention of a possible cross-contamination (some manufacturers declare that the product has been manufactured 'in a facility that is also used to process products that may contain allergens', for example). Conclusion: I do not recommend this brand.
Excellent additive, liked the quality, liked the price and packaging, I advise you to buy!)
The product fully corresponds to the characteristics indicated on the packaging, 10/10!
| Serving Size | 1 Teaspoon |
| Amount Per Serving | % Daily Value |
| Total Carbohydrate | 3 g |
| Dietary Fiber | 3 g |
| Sodium | 15 mg |
