Grade: B (Good Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Fennel	Infantile colic
Peppermint	Irritable bowel syndrome (IBS)
Grade: C (Unclear or Conflicting Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Agrimony	Gastrointestinal disorders
Bacopa	Irritable bowel syndrome (IBS)
Belladonna	Irritable bowel syndrome
Chamomile	Gastrointestinal conditions
Clay	Functional gastrointestinal disorders
Copper	Menkes' kinky-hair disease
Globe artichoke	Irritable bowel syndrome (IBS)
Lactobacillus acidophilus	Irritable bowel syndrome
Lycopene	Gastrointestinal tract and colorectal cancer prevention
Peppermint	Antispasmodic (colonic, esophageal, gastric spasm)
Psyllium	Irritable bowel syndrome
Rhubarb	Gastrointestinal tract disorders
Saccharomyces boulardii	Irritable bowel syndrome (IBS)
Selenium	Malabsorption
Slippery elm	Gastrointestinal disorders
Turmeric	Irritable bowel syndrome (IBS)
Vitamin B12	Imerslund-Grasbeck disease
White horehound	Intestinal disorders/antispasmodic
Grade: D (Fair Negative Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Zinc	Celiac disease
Traditional or Theoretical Uses which Lack Sufficient Evidence
Therapy	Specific therapeutic Use(s)
Abuta	Colic
Aconite	Esophagitis (inflamed esophagus)
African wild potato	Abdominal pain
Alfalfa	Gastrointestinal tract disorders
Algin	Bowel function improvement
Aloe	Bowel disorders
Alpinia	Antispasmodic
American pennyroyal	Anti-spasm
Anise	Antispasmodic
Apricot	Intestinal disorders/antispasmodic
Arginine	Infantile necrotizing enterocolitis
Arrowroot	Gastrointestinal disorders
Asarum	Gastrointestinal disorders
Asparagus	Antispasmodic
Astragalus	Gastrointestinal disorders
Bael fruit	Antispasmodic
Barberry	Stomach cramps
Barley	Bowel/intestinal disorders
Bay leaf	Colic
Belladonna	Diverticulitis
Bellis perennis	Antispasmodic
Berberine	Irritable bowel syndrome (IBS)
Beta-glucan	Diverticulitis (colon)
Betony	Antispasmodic
Bilberry	Stomach upset
Bitter almond	Antispasmodic
Bitter melon	Gastrointestinal cramps
Bitter orange	Gastrointestinal disorders
Black cohosh	Antispasmodic
Black currant	Colic
Black haw	Colic
Black horehound	Antispasmodic
Black tea	Stomach disorders
Bloodroot	Gastrointestinal conditions
Blue cohosh	Antispasmodic
Boldo	Gastrointestinal disorders
Boneset	Antispasmodic
Boswellia	Stomach upset
Bovine colostrum	Bowel health
Bromelain	Food lodged in the esophagus
Buchu	Antispasmodic
Butterbur	Antispasmodic
Calamus	Antispasmodic
Calcium	Intestinal disorders
Calendula	Bowel irritation
Caprylic acid	Malabsorption (lipid)
Cardamom	Gastrointestinal disorders
Carob	Celiac disease
Carrot	Gastrointestinal disorders
Cascara sagrada	Abdominal pain
Cat's claw	Diverticulitis
Chamomile	Abdominal bloating
Chaparral	Bowel cramps
Chia	Celiac disease
Chicory	Gastrointestinal disorders
Chlorophyll	Gastrointestinal conditions
Cinnamon	Abdominal pain
Clay	Stomach disorders
Cleavers	Stomach ailments
Clove	Abdominal pain
Codonopsis	Motility disorders
Coleus	Abdominal colic
Cramp bark	Antispasmodic
Cranberry	Stomach ailments
Damiana	Gastrointestinal disorders
Dandelion	Stomachache
Datura wrightii	Antispasmodic
Desert parsley	Gastrointestinal conditions
Devil's claw	Gastrointestinal disorders
Dong quai	Abdominal pain
Eastern hemlock	Gastrointestinal distress
Echinacea	Stomach upset
Elder	Antispasmodic
Elecampane	Antispasmodic
Emu oil	Gastrointestinal conditions
Euphorbia	Bloating
Evening primrose oil	Irritable bowel syndrome
Eyebright	Gastric acid secretion stimulation
Fennel	Gastrointestinal discomfort
Fenugreek	Colic
Feverfew	Abdominal pain
Flaxseed and flaxseed oil	Abdominal pain
Folate	Celiac disease
Fo-ti	Stomach disorders
Garcinia	Bowel disorders
Garlic	Stomach ache
Ginger	Anti-spasm
Ginseng	Stomach upset
Goldenrod	Antispasmodic
Grape seed	Gastrointestinal disorders
Green tea	Stomach disorders
Ground ivy	Antispasmodic
Gymnema	Stomach ailments
Hawthorn	Abdominal colic
Holy basil	Antispasmodic
Hops	Antispasmodic
Horseradish	Colic
Horsetail	Stomach upset
Hyssop	Antispasmodic
Jequirity	Abdominal pain
Jewelweed	Stomach cramps
Jointed flatsedge	Abdominal pain
Juniper	Bloating
Khella	Colic (urinary)
Labrador tea	Stomach ache
Lactobacillus acidophilus	Diverticulitis
Ladies mantle	Stomach problems
Lady's slipper	Antispasmodic
Lavender	Colic
Lemon balm	Antispasmodic
Lemongrass	Abdominal pain
Licorice	Antispasmodic
Lime	Stomach ailments
Liver extract	Celiac disease
Lovage	Antispasmodic (relieves spasms or cramps)
Mangosteen	Abdominal pain
Marshmallow	Diverticulitis
Mastic	Abdominal pain
Meadowsweet	Antispasmodic
Melatonin	Intestinal motility disorders
Mistletoe	Gastrointestinal disorders
MSM	Antispasmodic
Mugwort	Antispasmodic
Muira puama	Gastrointestinal conditions (asthenia)
Mullein	Antispasmodic
Noni	Stomachache
Nux vomica	Gastrointestinal disorders
Onion	Gastrointestinal disorders
Oregano	Bloating
Pantothenic acid	Celiac disease
Passion flower	Anti-spasm
Peppermint	Gastrointestinal disorders
Perilla	Gastrointestinal disorders
Pomegranate	Colic
Propolis	Anti-spasm
Pygeum	Stomach upset
Quercetin	Antispasmodic
Quinoa	Celiac disease
Raspberry	Bowel disorders (laxity)
Red clover	Anti-spasm
Red yeast rice	Colic in children
Rooibos	Colic
Rosemary	Antispasmodic
Sage	Abdominal pain
Salvia divinorum	Gastrointestinal motility
Sea buckthorn	Gastrointestinal disorders
Seaweed, kelp, bladderwrack	Stomach upset
Selenium	Celiac disease
Shark cartilage	Intestinal disorders and inflammation
Skunk cabbage	Antispasmodic
Slippery elm	Diverticulitis
Sorrel	Stomach problems
Soy	Gastrointestinal motility
Spirulina	Bowel health
Spleen extract	Celiac disease
Star anise	Gastrointestinal distress
Stinging nettle	Stomachache
Sweet woodruff	Antispasmodic
Tamarind	Colic
Tangerine	Gastrointestinal disorders
Thiamin	Gastrointestinal disorders
Thyme	Colic
Tribulus	Colic
Turmeric	Abdominal bloating
Tylophora	Antispasmodic
Valerian	Bloating
Vitamin K	Celiac disease
Watercress	Gastrointestinal disorders
White horehound	Bloating
White oak	Gastrointestinal disorders
Wild yam	Diverticulitis
Yew	Antispasmodic (bark)