Vitamins that may be helpful
An organism related to brewer’s
yeast, Saccharomyces boulardii
(Sb), is widely used in Europe to prevent antibiotic-induced diarrhea. It is also available as
a supplement in the United States. Animal research with Sb shows interference with
Clostridium difficile, a common bacterial cause of diarrhea.6 In double-blind
trials, Sb has prevented antibiotic-induced7 and other forms of infectious
diarrhea.8 An intake of 500 mg four times per day has been used in some of this
research. Sb has also helped tourists prevent traveler’s diarrhea, according to
double-blind research.9 In one trial, positive results were obtained at amounts as
low as 150–450 mg per day.10 Even diarrhea caused by Crohn’s disease has partially responded to Sb
supplementation in double-blind research.11 While not every trial shows
efficacy,12 the preponderance of evidence clearly supports the use of Sb in people
with diarrhea caused by antibiotics or infection. Seriously ill patients should consult
with their doctor before supplementing with Sb, as rare but serious cases of infection caused
by Sb in such patients has been reported.13
Beneficial bacteria, such as lactobacilli and bifidobacteria, normally live in a healthy
colon, where they inhibit the over-growth of disease-causing bacteria.14 Diarrhea
flushes intestinal microorganisms out of the digestive tract, leaving the body vulnerable to
opportunistic infections. Replenishing with acidophilus and other beneficial probiotic bacteria can help resolve the diarrhea and
prevent new infections.15 The effective amount of probiotic bacteria depends on the
strain used, as well as the concentration of viable organisms.
The combination of bifidobacteria and Strep thermophilus (found in certain yogurts) dramatically reduces the incidence of
acute diarrhea in hospitalized children.16 Active-culture yogurt, milk fermented
with Lactobacillus casei and other sources of probiotic bacteria may prevent
antibiotic-induced diarrhea.17 18 19
As mentioned in the dietary changes section above, if lactose intolerance is the cause of diarrhea,
supplemental use of lactase prior to consuming
milk or milk-containing products can be helpful.20 Cheese rarely has enough lactose to cause symptoms in
lactose-intolerant people. Lactase products are available that can be chewed while drinking milk or added to milk directly.
The malabsorption problems that develop during diarrhea can lead to deficiencies of many
vitamins and minerals.21 For this reason, it makes sense for people with diarrhea
to take a multivitamin-mineral supplement. Two
of the nutrients that may not be absorbed efficiently as a result of diarrhea are zinc and
vitamin A, both needed to fight infections. In third world countries, supplementation with
zinc and vitamin A has led to a reduction in, or prevention of, infectious diarrhea in
children.22 There is evidence that even children who are not zinc-deficient could
benefit from zinc supplementation during an episode of infectious diarrhea, if the diarrhea is
being caused by certain specific organisms, such as the organism that causes cholera or some
strains of E. coli.23
Brewer’s yeast supplementation has
been shown to alter immune function and the
flora living in the intestine, and may relieve infectious diarrhea. Three capsules or tablets
of brewer’s yeast three times per day for two weeks was reported to improve three cases
of infectious diarrhea caused by Clostridium difficile.24 Animal research
has confirmed that brewer’s yeast helps fight this unfriendly bacterium.25
(Note that real brewer’s yeast is not identical to nutritional, or torula, yeast and
that when asking for “brewer’s yeast” in health food stores, people are
often directed toward these other products. Real brewer’s yeast is bitter, whereas other
health food store yeasts have a more pleasant taste.)
Colostrum might be useful for certain types
of infectious diarrhea. In a double-blind trial, children with diarrhea caused by a rotavirus
were treated with immunoglobulins extracted from colostrum derived from cows immunized with
rotavirus. Compared with the placebo, colostrum extract significantly reduced the amount of
diarrhea and the amount of oral rehydration solution required. The rotavirus was eliminated
from the stool significantly more rapidly in the colostrum group than in the placebo group
(1.5 days, vs. 2.9 days).26
In addition to a positive effect against acute rotavirus diarrhea,27 there is
also evidence that specific forms of colostrum (derived from specially immunized cows or those
with confirmed presence of specific antibodies) are effective against diarrhea caused by
Cryptosporidium parvum, Helicobacter pylori, Escherichia
coli, and Clostridium difficile.28 29 30
31 32 However, it is not known whether commercially-available colostrum
provides significant amounts of the specific immunoglobulins that are active against these
organisms. Furthermore, unless the immunoglobulins are present in high enough concentrations,
the preparation is not likely to be effective.33
In a double-blind study of children (ages six months to two years) with acute diarrhea,
supplementing with glutamine significantly
reduced the duration of diarrhea by 26%.34 Children were given 136 mg of glutamine
per pound of body weight per day for seven days. Glutamine appeared to work by improving the
health of the intestinal lining, rather than through any effect on the immune system.
While fiber from dietary or herbal sources
is often useful for constipation, it may also play a role in alleviating diarrhea.
Acute diarrhea can damage the lining of the intestine. Folic acid can help repair this damage. In one
preliminary trial, supplementing with very large amounts of folic acid (5 mg three times per
day for several days) shortened the duration of acute infectious diarrhea by 42%.35
However, a double-blind trial failed to show any positive effect with the same level of folic
acid.36 Therefore, evidence that high levels of folic acid supplementation will
help people with infectious diarrhea remains weak.
It is known vitamin A supplements support
immune function and prevent infections. This is true, however, only under some circumstances.
Vitamin A supplementation can also increase the risk of infections, according to the
findings of a double-blind trial.37 In a study of African children between six
months and five years old, a 44% reduction in the risk of severe diarrhea was seen in those
children given four 100,000–200,000 IU supplements of vitamin A (the lower amount for
those less than a year old) during an eight-month period. On further investigation, the
researchers discovered that the reduction in diarrhea occurred only in children who were very
malnourished. For children who were not starving, vitamin A supplementation actually
increased the risk of diarrhea compared with the placebo group. The vitamin
A-supplemented children also had a 67% increased risk of coughing and rapid
breathing, and signs of further lung infection, although this problem did not appear in
children infected with the AIDS virus. These findings should be of concern to American
parents, whose children are not usually infected with HIV or severely malnourished. Such
relatively healthy children fared poorly in the African trial in terms of both the risk of
diarrhea and the risk of continued lung problems. Vitamin A provided no benefit to the
well-nourished kids. Therefore, it makes sense not to give vitamin A supplements to
children unless there is a special reason to do so, such as the presence of a condition
causing malabsorption (e.g., celiac disease).
Are there any side effects or interactions?
Refer to the individual supplement for information about any side effects or interactions.
Herbs that may be helpful
The following recommendations are for milder forms of diarrhea. For more serious cases of
diarrhea, proper medical evaluation and monitoring should occur before taking any herbal
supplements.
Carob is rich in tannins that have an
astringent or binding effect on the mucous membranes of the intestinal tract. A double-blind
trial has suggested it may be particularly useful for young children and infants with
diarrhea.38 Some healthcare professionals recommend 15 grams of carob powder is
mixed with applesauce (for flavor) when given to children. Carob can also be used for treating
adult diarrhea.
While fiber from dietary or herbal sources
is often useful for constipation, it may also play a role in alleviating diarrhea. For
example, 9–30 grams per day of psyllium
seed (an excellent source of fiber) makes stool more solid and can help resolve symptoms
of non-infectious diarrhea.39 Alginic acid, one of the major constituents in bladderwrack(Fucus vesiculosus), is a
type of dietary fiber and as a result may potentially help relieve diarrhea. However, human
studies have not been done on how effective bladderwrack is for this condition.
An extract from stem bark latex of Sangre de drago (Croton lechleri), an herb from
the Amazon basin of Peru, has demonstrated significant anti-diarrheal activity in
preliminary40 41 and double-blind trials. Double-blind research has
demonstrated the extract’s effectiveness for traveler’s diarrhea,42
non-specific diarrhea,43 and diarrhea associated with HIV infection and AIDS.44 45 For
traveler’s diarrhea and nonspecific diarrhea, amounts ranging from 125 mg to 500 mg
taken four times daily for two days have proven effective. However, in one trial, only the 125
mg four times daily amount (but not higher amounts) was effective for acute nonspecific
diarrhea.46 The reasons for the failure of higher amounts in this study is not
known. Very high amounts of these extracts (350–700 mg four times daily for seven or
more days) were used in the trials involving people with HIV and AIDS. Such levels of supplementation should
always be supervised by a doctor. Most of this research on Sangre de Drago is unpublished, and
much of it is derived from manufacturers of the formula. Further double-blind trials,
published in medical journals, are needed to confirm the efficacy reported in these
studies.
Tormentil root (Potentilla tormentilla) is an herb that has been used for many
years in different European folk medicines for the treatment of diarrhea. In a double-blind
study of children with diarrhea caused by rotavirus infection, the duration of diarrhea
averaged three days in children who received tormentil root extract, compared with five days
in those who received a placebo.47 No adverse effects were seen. The amount of
tormentil root extract used was 3 drops for every year of life, taken three times a day until
diarrhea stopped, or for a maximum of five days.
Other astringent herbs traditionally used for diarrhea include blackberry leaves, blackberry root bark, blueberry leaves, and red raspberry leaves.48 Raspberry leaves
are high in tannins and, like blackberry, may relieve acute diarrhea. A close cousin of the
blueberry, bilberry, has been used
traditionally in Germany for adults and children with diarrhea.49 Only dried
berries or juice should be used—fresh berries may worsen diarrhea.
Cranesbill has been used by several of the
indigenous tribes of North America to treat diarrhea. The tannins in cranesbill likely account
for the anti-diarrheal activity50 —although there has been little scientific
research to clarify cranesbill’s constituents and actions.
In laboratory experiments, a tannin in oak,
known as ellagitannin, inhibited intestinal secretion,51 which may help resolve
diarrhea. Oak is well regarded in Germany, where it is recommended (along with plenty of
electrolyte-containing fluids) to treat mild, acute diarrhea in children.52
Due to of its supposed antimicrobial activity,
goldenseal has a long history of use for infectious diarrhea. Its major alkaloid,
berberine (also found in barberry and Oregon grape), has been shown to improve infectious
diarrhea in some double-blind trials.53 Negative studies have generally focused on
people with cholera, while positive studies investigated viral diarrhea or diarrhea due to
strains of E. coli. These studies generally used 400–500 mg berberine one to
three times per day. Because of the low amount of berberine in most goldenseal products, it is
unclear how effective the whole root or root extracts would be in treating diarrhea.
Chamomile may reduce intestinal cramping
and ease the irritation and inflammation associated with diarrhea, according to test tube
studies.54 Chamomile is typically taken as a tea. Many doctors recommend dissolving
2–3 grams of powdered chamomile or adding 3–5 ml of a chamomile liquid extract to
hot water and drinking it three or more times per day, between meals. Two to three teaspoons
(10–15 grams) of the dried flowers can be steeped in a cup of hot water, covered, for
ten to fifteen minutes as well.
Tylophora has been used traditionally in
the Ayurvedic system for diarrhea probably due
to its anti-inflammatory and antimicrobial actions, although human studies have not confirmed
this use.
Herbs high in mucilage, such as marshmallow
or slippery elm, may help reduce the
irritation to the walls of the intestinal tract that can occur with diarrhea. A usual amount
taken is 1,000 mg of marshmallow extract, capsules, or tablets three times per day.
Marshmallow may also be taken as a tincture in the amount of 5–15 ml three times
daily.
Sweet annie has been used traditionally to
treat infectious diarrhea and malaria. However, more modern studies have used the isolated
constituent artemisinin and it is unclear how effective the herb is in managing diarrhea.
Are there any side effects or interactions?
Refer to the individual herb for information about any side effects or interactions.
1. Hyams JS, Etienne NL, Leichtner AM, Theuer RC. Carbohydrate
malabsorption following fruit juice ingestion in young children. Pediatr
1988;82:64–8.
2. Barness LA. Safety considerations with high ascorbic acid dosage.
Ann NY Acad Sci 1975;258:523–8 [review].
3. Babb RR. Coffee, sugars and chronic diarrhea. Postgrad Med
1984;75:82, 86–7.
4. James JM, Burks AW. Food-associated gastrointestinal disease. Curr
Opin Pediatr 1996;8:471–5 [review].
5. Bowie MD, Hill ID, Mann MD. Response of severe infantile diarrhoea to
soya-based feeds. S Afr Med J 1988;73:343–5.
6. Pothoulakis C, Kelly CP, Joshi MA, et al. Saccharomyces
boulardii inhibits Clostridium difficile toxin A binding and enterotoxicity in
rat ileum. Gastroenterology 1993;104:1108–15.
7. Surzwicz CM, Elmer GW, Speelman P, et al. Prevention of
antibiotic-associated diarrhea by Saccharomyces boulardii: a prospective study.
Gastroenterology 1989;96:981–8.
8. Bleichner G, Blehaut H, Mentec H, Moyse D. Saccharomyces
boulardii prevents diarrhea in critically ill tube-fed patients. A muticenter,
randomized, double-blind placebo-controlled trial. Intensive Care Med
1997;23:517–23.
9. Kollaritsch H, Holst H, Grobara P, Widermann G. Prevention of
traveler’s diarrhea with Saccharomyces boulardii. Results of a placebo
controlled double-blind study. Fortschr Med 1993;111:152–6 [in German].
10. Kirchelle A, Fruhwein N, Toburen D. Treatment of persistent diarrhea
with S. boulardii in returning travelers. Results of a prospective study. Forstchr
Med 1996;114:136–40 [in German].
11. Plein K, Hotz J. Therapeutic effects of Saccharomyces on mild
residual symptoms in a stable phase of Crohn’s disease with special respect to chronic
diarrhea—a pilot study. Z Gastroenterol 1993;31:129–34.
12. Lewis SJ, Potts LF, Barry RE. The lack of therapeutic effect of
Saccharomyces boulardii in the prevention of antibiotic-related diarrhoea in elderly patients.
J Infect 1998;36:171–4.
13. Piarroux R, Millon L, Bardonnet K, et al. Are live saccharomyces
yeasts harmful to patients? Lancet 1999;353:1851–2 [letter].
14. Poupard JA, Hussain J, Norris RF. Biology of the bifidobacteria.
Bact Rev 1973;37:136–65.
15. Saavedra J. Probiotics and infectious diarrhea. Am J
Gastroenterol 2000;95:S16–8 [review].
16. Saavedra JM, Bauman NA, Oung I, et al. Feeding of Bifidobacterium
bifidum and Streptococcus thermophilus to infants in hospital for prevention of diarrhoea and
shedding of rotavirus. Lancet 1994;344:1046–9.
17. Colombel JF, Cortot A, Neut C, Romond C. Yogurt with Bifidobacterium
longum reduces erythromycin-induced gastrointestinal effects. Lancet 1987;2:43
[letter].
18. Pedone CA, Bernabeu AO, Postaire ER, et al. The effect of
supplementation with milk fermented by Lactobacillus casei (strain DN-114 001) on acute
diarrhoea in children attending day care centres. Int J Clin Pract
1999;53:179–84.
19. Saavedra J. Probiotics and infectious diarrhea. Am J
Gastroenterol 2000;95:S16–8 [review].
20. Montes RG, Perman JA. Lactose intolerance. Postgrad Med
1991;89:175–84 [review].
21. Werbach MR. Nutritional influences on Illness, 2d ed.
Tarzana, CA: Third Line Press, 1993, 256–61 [review].
22. Bhan MK, Bhandari N. The role of zinc and vitamin A in persistent
diarrhea among infants and young children. J Pediatr Gastroenterol Nutr
1998;26:446–53 [review].
23. Crane JK, Hoque KM. Zinc for infectious diarrhea in developed
countries: should we be sprinkling our own lawns? J Pediatr Gastroenterol Nutr
2008;46:484–5.
24. Schellenberg D, Bonington A, Champion C, et al. Treatment of
Clostridium difficile diarrhea with brewer’s yeast. Lancet 1994;343:171–2
[letter].
25. Izadnia F, Wong CT, Kocoshis SA. Brewer’s yeast and
Saccharomyces boulardii both attenuate Clostridium difficile-induced colonic secretion in the
rat. Dig Dis Sci 1998;43:2055–60.
26. Sarker SA, Casswall TH, Mahalanabis D, et al. Successful treatment of
rotavirus diarrhea in children with immunoglobulin from immunized bovine colostrum.
Pediatr Infect Dis J 1998;17:1149–54.
27. Mitra AK, Mahalanabis D, Ashraf H, et al. Hyperimmune cow colostrum
reduces diarrhoea due to rotavirus: a double- blind, controlled clinical trial. Acta
Paediatr 1995;84:996–1001.
28. Okhuysen PC, Chappell CL, Crabb J, et al. Prophylactic effect of
bovine anti-Cryptosporidium hyperimmune colostrum immunoglobulin in healthy volunteers
challenged with Cryptosporidium parvum. Clin Infect Dis 1998;26:1324–9.
29. Greenberg PD, Cello JP. Treatment of severe diarrhea caused by
Cryptosporidium parvum with oral bovine immunoglobulin concentrate in patients with AIDS.
J Acquir Immune Defic Syndr Hum Retrovirol 1996;13:348–54.
30. Casswall TH, Sarker SA, Albert MJ, et al. Treatment of Helicobacter
pylori infection in infants in rural Bangladesh with oral immunoglobulins from hyperimmune
bovine colostrum. Aliment Pharmacol Ther 1998;12:563–8.
31. Huppertz HI, Rutkowski S, Busch DH, et al. Bovine colostrum
ameliorates diarrhea in infection with diarrheagenic Escherichia coli, shiga toxin-producing
E. Coli, and E. coli expressing intimin and hemolysin. J Pediatr Gastroenterol Nutr
1999;29:452–6.
32. Warny M, Fatimi A, Bostwick EF, et al. Bovine immunoglobulin
concentrate-clostridium difficile retains C difficile toxin neutralising activity after
passage through the human stomach and small intestine. Gut 1999;44:212–7.
33. Brines RD, Brock JH. The effect of trypsin and chymotrypsin on the in
vitro antimicrobial and iron-binding properties of lactoferrin in human milk and bovine
colostrum. Unusual resistance of human apolactoferrin to proteolytic digestion. Biochim
Biophys Acta 1983;759:229–35.
34. Yalcin SS, Yurdakok K, Tezcan I, Oner L. Effect of glutamine
supplementation on diarrhea, interleukin-8 and secretory immunoglobulin A in children with
acute diarrhea. J Pediatr Gastroenterol Nutr 2004;38:494–501.
35. Haffejee IE. Effect of oral folate on duration of acute infantile
diarrhoea. Lancet 1988;2:334–5 [letter].
36. Ashraf H, Rahman MM, Fuchs GJ, Mahalanabis D. Folic acid in the
treatment of acute watery diarrhoea in children: a double-blind, randomized, controlled trial.
Acta Pædiatr 1998;87:1113–5.
37. Fawzi WW, Mbise R, Spiegelman D, et al. Vitamin A supplements and
diarrheal and respiratory tract infections among children in Dar es Salaam, Tanzania. J
Pediatr 2000;137:660–7.
38. Loeb H, Vandenplas Y, Wursch P, Guesry P. Tannin-rich pod for
treatment of acute-onset diarrhea. J Pediatr Gastroenterol Nutr
1989;8:480–5.
39. Eherer AH, Porter J, Fordtran JS. Effect of psyllium, calcium
polycarbophil, and wheat bran on secretory diarrhea induced by phenolphthalein.
Gastroenterol 1993;104:1007–12.
40. Koch J, Tuveson J, Carlson T, Schmidt J. SB-300: a new and effective
therapy for HIV-associated diarrhea. Poster presented at the Seventh European Conference on
Clinical Aspects and Treatment of HIV-Infection, Lisbon, Portugal, October 23–27,
1999.
41. DuPont HL, Tidmarsh G. An open label pilot study to investigate the
safety and effectiveness of orally administered Provir (SP-303) capsules in the symptomatic
treatment of acute nonspecific diarrhea and traveler’s diarrhea. South San Francisco,
CA: Shaman Pharmaceuticals, 1998, unpublished.
42. Dicesare D, DuPont HL, Mathewson JJ, et al. A double-blind,
randomized, placebo-controlled study of SP-303 in the symptomatic treatment of acute diarrhea
among travelers to Mexico and Jamaica. Abstract presented at the Infectious Diseases Society
of America, 36th Annual Meeting, Denver, CO, November 10, 1998.
43. Ettedgui G, Schael IP, Porter S, Pennington J. A double-blind,
randomized, placebo-controlled, multi-dose, phase II study to assess the safety and efficacy
of SP-303 in the symptomatic treatment of acute diarrhea among adult residents of Venezuela:
oral administration of 125 mg, 250 mg, or 500 mg of SP-303 given every 6 hours for 48 hours.
South San Francisco, CA: Shaman Pharmaceuticals, 1998, unpublished.
44. Holodniy M, Koch J, Mistal M, et al. A double blind, randomized,
placebo-controlled phase II study to assess the safety and efficacy of orally administered
SP-303 for the symptomatic treatment of diarrhea in patients with AIDS. Am J
Gastroenterol 1999;94:3267–73.
45. Koch J. A phase III, double-blind, randomized, placebo-controlled
multi-center study of SP-303 (Provir™) in the symptomatic treatment of diarrhea in
patients with acquired immunodeficiency syndrome (AIDS). Posters presented at the 13th
international AIDS Conference in Durba, South Africa, July 14, 2000.
46. Ettedgui G, Schael IP, Porter S, Pennington J. A double-blind,
randomized, placebo-controlled, multi-dose, phase II study to assess the safety and efficacy
of SP-303 in the symptomatic treatment of acute diarrhea among adult residents of Venezuela:
oral administration of 125 mg, 250 mg, or 500 mg of SP-303 given every 6 hours for 48 hours.
South San Francisco, CA: Shaman Pharmaceuticals, 1998, unpublished.
47. REF: Subbotina MD, Timchenko VN, Vorobyov MM, et al. Effect of oral
administration of tormentil root extract (Potentilla tormentilla) on rotavirus
diarrhea in children: a randomized, double blind, controlled trial. Pediatr Infect Dis
J 2003;22:706–11.
48. Tyler VE. Herbs of Choice: The Therapeutic Use of
Phytomedicinals. New York: Pharmaceutical Products Press, 1994, 51–4.
49. Weiss RF. Herbal Medicine. Gothenburg, Sweden: Ab Arcanum
and Beaconsfield, UK: Beaconsfield Publishers Ltd, 1988, 101–2.
50. Duke JA. CRC Handbook of Medicinal Plants. Boca Raton, FL:
CRC Press, 1985, 209.
51. Konig M, Scholz E, Hartmann R, et al. Ellagitannins and complex
tannins from Quercus petraea bark. J Nat Prod 1994;57:1411–5.
52. Schilcher H. Phytotherapy in Paediatrics. Stuttgart,
Germany: Medpharm Scientific Publishers, 1997, 49–50.
53. Khin-Maung-U, Myo-Khin, Nyunt-Nyunt-Wai, et al. Clinical trial of
berberine in acute watery diarrhoea. Br Med J 1985;291:1601–5.
54. Achterrath-Tuckerman U, Kunde R, et al. Pharmacological
investigations with compounds of chamomile. V. Investigations on the spasmolytic effect of
compounds of chamomile and Kamillosan® on isolated guinea pig ileum. Planta Med
1980;39:38–50.
55. Su Z. Acupuncture treatment of infantile diarrhea: a report of 1050
cases. J Tradit Chin Med 1992;12:120–1.
56. Feng WL. Acupuncture treatment for 30 cases of infantile chronic
diarrhea. J Tradit Chin Med 1989;9:106–7.
57. Lin YC. Observation of therapeutic effects of acupuncture treatment
in 170 cases of infantile diarrhea. J Tradit Chin Med 1987;7:203–4.
58. Cao Y. Personal experience on acupuncture treatment of diarrhea.
J Tradit Chin Med 1990;10:163–7.
59. Cao Y. Personal experience on acupuncture treatment of diarrhea.
J Tradit Chin Med 1990;10:251–6.
60. Lin Y, Zhou Z, Shen W, et al. Clinical and experimental studies on
shallow needling technique for treating childhood diarrhea. J Tradit Chin Med
1993;13:107–14.