If you're looking for natural digestive comfort — specifically occasional heartburn and reflux relief — **D-Limonene** is a terpene compound from citrus peel with limited but targeted clinical research. At 250mg per softgel, you're getting a dose that falls within the range used in the few available studies, though the evidence base is quite small compared to well-studied digestive supplements.

The formula is straightforward — just D-limonene from orange peel in an MCT oil base with a standard gelatin softgel. What this means for you: one capsule daily with food keeps it simple, and the oil-based delivery may help with absorption since D-limonene is fat-soluble.

The biggest limitation is the evidence itself. There are very few human clinical trials on D-limonene for any health outcome, and the existing studies are small and not well-replicated. If you're looking for well-researched digestive support, the clinical backing here is thin. This is more of an emerging ingredient than an established one.

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BioStacks

Swanson

D-Limonene 250 mg

Capsule · 60 servings · $0.10/serving

10 / 100Very Poor

Score Breakdown

Formulation
10
Safety
100
Final score
10/100

Ingredients (1)

D-Limonene250 mg

50% of effective dose · Premium form

Label Nutrition Facts

Active Ingredients

From the label · % Daily Value

DV%

D-Limonene250 mg

Other Ingredients

Fillers, coatings, and additives

4Safe

Medium Chain Triglyceride OilCarrier

Safe

GelatinCapsule

Safe

GlycerinHumectant

Safe

Purified WaterSolvent

Safe

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.