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Product Description
Diindolylmethane capsules are nutritional supplement products containing 3,3'-diindolylmethane (DIM), a compound associated with the metabolism of indole-3-carbinol from cruciferous vegetables. They are used by nutraceutical brands developing standardized DIM formulas for hormone-metabolism support, healthy aging, and convenient daily capsule supplementation.
DIM is formed from indole-3-carbinol (I3C), a naturally occurring compound associated with vegetables such as broccoli, cabbage, cauliflower, and Brussels sprouts. Commercial DIM supplements use purified, standardized material rather than relying on the variable DIM-forming potential of whole vegetable ingredients.
3,3'-Diindolylmethane is an indole-derived compound commonly known as DIM. It has been studied for its interaction with estrogen metabolism and related cellular pathways. In supplement formulation, DIM is typically used as a defined nutritional ingredient where consistent identity, purity, and dosage are important.
For B2B buyers, the central formulation question is not simply DIM purity. Finished capsule performance can also depend on the delivery system, excipients, dispersibility, capsule fill design, and the distinction between purified DIM and its precursor, indole-3-carbinol.
| Item | Specification |
|---|---|
| Product Name | Diindolylmethane Capsules |
| Alternative Name | DIM Capsules / 3,3'-Diindolylmethane Capsules |
| Category | Nutritional Ingredients / Nutraceutical Capsules |
| Active Ingredient | 3,3'-Diindolylmethane (DIM) |
| Related Precursor | Indole-3-Carbinol (I3C) |
| CAS Number | 1968-05-4 |
| Molecular Formula | C17H14N2 |
| Molecular Weight | 246.31 g/mol |
| Appearance | White to off-white or pale yellow crystalline powder |
| Assay | High-purity DIM, commonly available in 98% and higher assay grades |
| Test Method | HPLC for identification and assay determination |
| Dosage Form | Hard capsules; formulation and capsule size customizable according to product requirements |
| Particle Size | Controlled or customized according to formulation and processing requirements |
| Shelf Life | Typically 24 months when properly stored |
| Storage | Store in a cool, dry place, protected from moisture, heat, and direct sunlight |
| Bulk Packaging | Common options include 1kg and 5kg aluminum foil bags and 25kg fiber drums; custom packaging available |
| Finished Product Packaging | Bottles and other retail-ready capsule packaging can be customized for private label projects |
DIM has been studied for its role in estrogen metabolism and other biological pathways. These areas of research do not establish that every DIM formulation produces a particular health outcome, and finished-product claims should be reviewed according to applicable regulations in the intended market.
DIM and indole-3-carbinol are related but are not interchangeable ingredients. I3C is a precursor compound associated with cruciferous vegetables, while DIM is one of the compounds formed from I3C under acidic conditions. This distinction matters when establishing ingredient identity, assay specifications, and finished-product labeling.
| Selection Factor | DIM | Indole-3-Carbinol |
|---|---|---|
| Ingredient Identity | 3,3'-Diindolylmethane as the defined compound | Indole-3-carbinol as the precursor compound |
| CAS Number | 1968-05-4 | 700-06-1 |
| Formulation Approach | Provides DIM directly in the finished formula | Uses the metabolic precursor rather than DIM itself |
| Quality-Control Focus | DIM identity, assay, impurities, and formulation characteristics | I3C identity, assay, stability, and formulation characteristics |
Procurement teams should therefore avoid treating a high-assay I3C ingredient as equivalent to a DIM specification. When sourcing DIM capsules, the COA should identify DIM itself as the tested active ingredient and report the relevant assay method and specification.
Diindolylmethane capsules can be developed as single-ingredient or multi-ingredient nutritional formulas. Customization may include capsule format, ingredient combinations, excipient system, packaging, labeling, and private label production. Exact formulation parameters are established according to the intended product specification and target market requirements.
For bulk DIM ingredient supply, common packaging formats include 1kg and 5kg aluminum foil bags and 25kg fiber drums. Finished capsules can be packed in customized bottles and other retail-ready formats. Packaging selection should protect the material from moisture, excessive heat, and direct light during storage and distribution.
Quality evaluation should verify both the identity of DIM and the suitability of the material for finished supplement manufacturing. Standard batch testing includes:
No. DIM and indole-3-carbinol are chemically related but distinct compounds. I3C is a precursor associated with cruciferous vegetables, while DIM can form from I3C under acidic conditions. Buyers should therefore specify which compound is required and verify its identity and assay on the corresponding COA.
Review the declared DIM assay, HPLC method, ingredient identity, impurity controls, excipient system, and finished capsule specification. For private label projects, packaging, labeling, formulation compatibility, and target-market requirements should also be evaluated before commercial production.
Yes. DIM capsules can be developed as standalone or combination formulas, with capsule format, formulation parameters, excipients, labels, and retail packaging customized according to product requirements. Final specifications should balance active ingredient content, processing performance, stability, and the intended market positioning.
Diindolylmethane capsules offer a defined DIM ingredient format for nutraceutical brands requiring consistent active content, analytical verification, and flexible finished-product development. Contact us today to request samples, a COA, technical documents, and a wholesale quotation for Diindolylmethane capsules.

Packaging & Delivery
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