Grade: A (Strong Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Calcium	Antacid (calcium carbonate)
Zinc	Gastric ulcers
Grade: B (Good Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Peppermint	Indigestion (non-ulcer dyspepsia)
Grade: C (Unclear or Conflicting Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Asparagus	Dyspepsia (upset stomach)
Berberine	H. pylori
Bilberry	Stomach ulcers (peptic ulcer disease)
Blessed thistle	Indigestion and flatulence (gas)
Bovine colostrum	Helicobacter pylori infection
Carob	Gastroesophageal reflux disease (in infants)
Corydalis	H. pylori infection in stomach ulcers
Cranberry	Stomach ulcers caused by H. pylori bacteria
DMSO	Gastritis
Gamma oryzanol	Gastritis
Globe artichoke	Dyspepsia (upset stomach)
Honey	Gastroenteritis (infantile)
Lemon balm	Dyspepsia (upset stomach)
Licorice	Bleeding stomach ulcers caused by aspirin
Mastic	Duodenal ulcer
Neem	Ulcers (gastroduodenal)
Propolis	Stomach ulcers caused by Helicobacter pylori bacteria
Sea buckthorn	Gastric ulcers
Thymus extract	Gastritis
Turmeric	Dyspepsia (heartburn)
Vitamin C	Bleeding stomach ulcers caused by aspirin
White horehound	Heartburn/poor appetite
Grade: D (Fair Negative Scientific Evidence)
Therapy	Specific therapeutic Use(s)
Beta-carotene	Helicobacter pylori bacteria eradication
Garlic	Stomach ulcers caused by Helicobacter pylori bacteria
Traditional or Theoretical Uses which Lack Sufficient Evidence
Therapy	Specific therapeutic Use(s)
Abuta	Dyspepsia (upset stomach)
Acacia	Indigestion
Ackee	Ulcers
Adrenal extract	Dyspepsia
Agave	Indigestion
Agrimony	Indigestion
Alfalfa	Indigestion
Algin	Gastric ulcers
Allspice	Dyspepsia
Aloe	Stomach acid reduction
Alpinia	Dyspepsia (upset stomach)
Amaranth oil	Ulcers
American pennyroyal	Indigestion
Andrographis paniculata Nees, Kan Jang®, SHA-10	Indigestion
Anise	Dyspepsia (stomach upset)
Aortic acid	Gastrointestinal reflux disease
Apple cider vinegar	Heartburn
Apricot	Enteritis (inflammation of bowel)
Arabinogalactan	Ulcers
Arginine	Stomach ulcers
Asparagus	Gastric ulcers
Astaxanthin	Dyspepsia (upset stomach)
Astragalus	Stomach ulcer
Bacopa	Gastric ulcers
Bael fruit	Ulcers
Banaba	Dyspepsia (upset stomach)
Barberry	Heartburn
Bay leaf	Stomach ulcers
Bee pollen	Enteritis (inflammation of bowels)
Belladonna	Stomach ulcers
Beta-carotene	Gastritis
Betony	Heartburn
Bitter melon	Disorders of the stomach and intestines (diabetic gastopathy)
Bitter orange	Duodenal ulcers
Black pepper	Helicobacter pylori infection
Bloodroot	Dyspepsia (upset stomach)
Blue flag	Enteritis
Boldo	Dyspepsia (upset stomach)
Boneset	Dyspepsia (upset stomach)
Borage seed oil	H. pylori infection
Boswellia	Dyspepsia (upset stomach)
Bromelain	Indigestion
Bulbous buttercup	Stomach complaints
Bupleurum	Gastric ulcer
Burdock	Ulcers
Butterbur	Gastric ulcers
Cajeput oil	H. pylori gastric infection
Calamus	Indigestion
Calendula	Gastrointestinal inflammation
Cardamom	Antacid
Carob	Dyspepsia (upset stomach)
Cascara sagrada	Dyspepsia (upset stomach)
Cat's claw	Gastritis
Chamomile	Heartburn
Chaparral	Enteritis
Chasteberry	Dyspepsia (upset stomach)
Chicory	Dyspepsia (upset stomach)
Chitosan	Antacid
Cinnamon	Dyspepsia (upset stomach)
Clove	Dyspepsia
Codonopsis	Gastric ulcers
Coleus	Peptic ulcer
Colloidal silver	Gastritis
Comfrey	Gastritis
Copper	Stomach ulcer
Corn poppy	Gastric ulcers
Corydalis	Gastritis
Cramp bark	Stomach ulcers
Damiana	Ulcers
Dandelion	Dyspepsia (upset stomach)
Danshen	Gastric ulcers
Devil's claw	Dyspepsia
Devil's club	Stomach ulcers
Dong quai	Gastric ulcer
Elderberry and elder flower	Stomach ulcers
English ivy	Ulcers (gastroduodenal)
Evening primrose oil	Disorders of the stomach and intestines
Fennel	Dyspepsia (upset stomach)
Fenugreek	Dyspepsia (upset stomach)
Flaxseed and flaxseed oil	Enteritis
Gamma oryzanol	Heartburn
Garcinia	Gastric ulcer prophylaxis
Garlic	Stomach acid reduction
Germanium	Gastritis
Ginger	Antacid
Ginkgo	Ulcer (trophic lesions)
Ginseng	H. pylori infection in stomach ulcers
Goldenseal	Gastroenteritis
Gotu kola	Gastric ulcers
Grape seed	Ulcers (gastroduodenal)
Grapefruit	Stomach ulcers
Green tea	Gastritis
Ground ivy	Gastritis (inflammation of stomach)
Hawthorn	Dyspepsia
Heartsease	Ulcers (throat)
Holy basil	Enteritis (inflammation of the small intestine)
Honey	Antacid
Hops	Dyspepsia
Horse chestnut	Ulcers
Horsetail	Dyspepsia
Hyssop	Dyspepsia (upset stomach)
Ignatia	Indigestion
Jequirity	Gastritis (inflamed stomach)
Juniper	Dyspepsia (upset stomach)
Katuka	Indigestion
Kava	Indigestion
Khat	Gastric ulcers
Kudzu	Gastritis (inflammation of the stomach)
Labrador tea	Heartburn
Lactobacillus acidophilus	Heartburn
Lavender	Heartburn
Lemongrass	Gastroenteritis (inflammation of the stomach)
Licorice	Gastroesophageal reflux disease
Lime	Dyspepsia (upset stomach)
Lotus	Enteritis (inflammation of small intestine)
Mangosteen	Ulcers
Marshmallow	Duodenal ulcer
Mastic	Helicobacter pylori infection
Meadowsweet	Antacid
Melatonin	Duodenal ulcer
Milk thistle	Dyspepsia
Mistletoe	Dyspepsia
MSM	Heartburn
Mugwort	Gastric ulcers
Muira puama	Dyspepsia (upset stomach)
Mullein	Ulcers
Myrcia	Enteritis (inflammation of the bowels)
Neem	Gastric ulcers (Type 2 diabetes-induced)
Niacin	Stomach ulcer
Noni	Gastric ulcers
Nopal	Ulcers
Nux vomica	Indigestion
Oleander	Indigestion
Oregano	Dyspepsia
Passion flower	Helicobacter pylori infection
Peony	Gastritis (chronic)
Peppermint	Antacid
Propolis	Duodenal ulcers
Psyllium	Duodenal ulcer
Quassia	Indigestion
Quercetin	Peptic ulcers
Raspberry	Helicobacter pylori infection
Red clover	Indigestion
Red yeast rice	Indigestion
Reishi mushroom	Gastric ulcers
Resveratrol	Helicobacter pylori infection
Rhubarb	Dyspepsia (upset stomach)
Riboflavin	Peptic ulcer disease (PUD)
Rosemary	Dyspepsia (upset stomach)
Rutin	Gastric ulcer
Saccharomyces boulardii	H. pylori infection (children)
Sage	Dyspepsia (upset stomach)
SAMe	Gastritis (hemorrhagic)
Saw palmetto	Indigestion
Sea buckthorn	Enteritis (inflammation of the small intestine)
Seaweed, kelp, bladderwrack	Heartburn
Sorrel	Ulcerated bowel
Spirulina	H. pylori infection
St. John's wort	Heartburn
Star anise	Indigestion
Stinging nettle	Gastric secretory inhibition
Tamarind	Indigestion
Tangerine	Helicobacter pylori infection
Thyme	Dyspepsia (upset stomach)
Thymus extract	Gastrointestinal inflammation (appendicitis)
Turmeric	Helicobacter pylori infection
Usnea	Gastric ulcers
Valerian	Heartburn
Vitamin A	Ulcers (stress ulcers in severely ill hospitalized patients)
Vitamin C	Gastric ulcer
Vitamin E	Gastric ulcer
Wasabi	Gastric ulcers
White horehound	Indigestion
White oak	Ulcers
White water lily	Gastrointestinal inflammation
Yarrow	Dyspepsia (upset stomach)