non-nutrient/non-botanical
Intrinsic Factor supplements
Half of the 8 intrinsic factor supplements in the NIH label database that print an amount list 20 mg or less per serving; the middle half list 20 mg to 20 mg (DSLD version 9.4.0, January 2026).
- Products listing it
- 108 print an amount; 2 list it inside a blend without an amount
- Median per serving
- 20 mgmiddle half 20 mg to 20 mg
How much intrinsic factor do supplements contain?
The median product lists 20 mg per serving. One in ten lists 16.01 mg or less, one in ten 23 mg or more. The amount printed most often is 20 mg (6 products).
Products by amount of intrinsic factor per serving
8 products, log scale; extreme 0.2% at each end left out of the drawing.
| Amount per serving | Products | For example |
|---|---|---|
| 20 mg | 6 | Week Two: Detox AM Pack (Douglas Laboratories); B-Complex with Metafolin and Intrinsic Factor (Douglas Laboratories); B-12 Intrinsic Factor (Progressive Professional from Progressive Laboratories) |
| 6.7 mg | 1 | Neurosol (Metagenics) |
| 30 mg | 1 | HCL Guard (Healthy Gut) |
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
Which products list the most intrinsic factor?
On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).
- HCL GuardHealthy Gut30 mg
- Week Two: Detox AM PackDouglas Laboratories20 mg
- B-Complex with Metafolin and Intrinsic FactorDouglas Laboratories20 mg
- B-12 Intrinsic FactorProgressive Professional from Progressive Laboratories20 mg
- Better BProgressive Professional from Progressive Laboratories20 mg
- Intrinsi B12-FolateMetagenics20 mg
- NeurosolMetagenics6.7 mg
In which products and brands?
Products listing intrinsic factor by DSLD product type
Brands listing it most: Metagenics (2), Douglas Laboratories (2), Progressive Professional from Progressive Laboratories (2), BioGenesis Nutraceuticals (1), Healthy Gut (1).
Every product listing intrinsic factor
10 products, A to Z by name (page 1 of 1), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- B-12 Intrinsic FactorProgressive Professional from Progressive Laboratories20 mg
- B-Complex with Metafolin and Intrinsic FactorDouglas Laboratories20 mg
- Better BProgressive Professional from Progressive Laboratories20 mg
- HCL GuardHealthy Gut30 mg
- Intrinsi B12-FolateMetagenics20 mg
- Methyl RenewNutri-Westin a blend
- MoRS LQ Methylation DonorSystemic Formulasin a blend
- NeurosolMetagenics6.7 mg
- Ultra HematinicBioGenesis Nutraceuticals ยท off the market20 mg
- Week Two: Detox AM PackDouglas Laboratories20 mg