Dyspepsia is also known as heartburn.

Dyspepsia Symptom
The term dyspepsia refers to the symptom of pain or discomfort in the epigastric region—the area of the abdomen between the belly button and the xiphoid process. It denotes abnormal or difficult digestion and is usually considered to be associated with gastroesophageal reflux disease (GERD), peptic ulcer, gallbladder disease, pancreatic disease, or use of nonsteroidal anti-inflammatory drugs (NSAIDs). Some clinicians have attributed it to gastritis caused by Helicobacter pylori, a hypothesis that remains controversial.

Natural treatment for dyspepsia
Artichoke leaf extract has been tested for dyspepsia.

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Dyspepsia Research Update:
Efficacy of artichoke leaf extract in the treatment of patients with functional dyspepsia: a six-week placebo-controlled, double-blind, multicentre trial.
Aliment Pharmacol Ther. 2003 Dec;18(11-12):1099-105.
This study aimed to assess the efficacy of artichoke leaf extract in the treatment of patients with functional dyspepsia (FD). METHODS: In a double-blind, randomized controlled trial (RCT), 247 patients with functional dyspepsia were recruited and treated with either a commercial artichoke leaf extract preparation (2 x 320 mg plant extract t.d.s.) or a placebo. The primary efficacy variable was the sum score of the patient's weekly rating of the overall change in dyspeptic symptoms (four-point scale). Secondary variables were the scores of each dyspeptic symptom and the quality of life (QOL) as assessed by the Nepean Dyspepsia Index (NDI). RESULTS: Two hundred and forty-seven patients were enrolled, and data from 244 patients (129 active treatment, 115 placebo) were suitable for inclusion in the statistical analysis (intention-to-treat). The overall symptom improvement over the 6 weeks of treatment was significantly greater with artichoke leaf extract than with the placebo. Similarly, patients treated with artichoke leaf extract showed significantly greater improvement in the global quality-of-life scores (NDI) compared with the placebo-treated patients. CONCLUSION: The artichoke leaf extract preparation tested was significantly better than the placebo in alleviating symptoms and improving the disease-specific quality of life in patients with functional dyspepsia.

Artichoke leaf extract reduces mild dyspepsia in an open study.
Phytomedicine. 2002 Dec;9(8):694-9.
A recent post-marketing study indicated that high doses of standardised artichoke leaf extract (ALE) may reduce symptoms of dyspepsia. To substantial these findings, this study investigated the efficacy of a low-dose ALE on amelioration of dyspeptic symptoms and improvement of quality of life. The study was an open, dose-ranging postal study. Healthy patients with self-reported dyspepsia were recruited through the media. The Nepean Dyspepsia Index and the State-Trait Anxiety Inventory were completed at baseline and after 2 months of treatment with ALE, which was randomly allocated to volunteers as 320 or 640 mg daily. Of the 516 participants, 454 completed the study. In both dosage groups, compared with baseline, there was a significant reduction of all dyspeptic symptoms, with an average reduction of 40% in global dyspepsia score. However, there were no differences in the primary outcome measures between the two groups, although relief of state anxiety, a secondary outcome, was greater with the higher dosage (P = 0.03). Health-related quality of life was significantly improved in both groups compared with baseline. We conclude that ALE shows promise to ameliorate upper gastro-intestinal symptoms and improve quality of life in otherwise healthy subjects suffering from dyspepsia.