PlainVitamins

Gut Feeling

by HoltraCeuticals · capsule · 120 capsules

  • On the market (NIH)
  • UPC 8 37654 69372 8
  • DSLD label 19445
  • Serving 2 to 3 capsules; amounts per 2 capsules
  • 60 servings

Gut Feeling by HoltraCeuticals lists 10 ingredients, 10 with an amount per serving of 2 capsules, such as 125 mcg of biotin, 212.5 mg of L-glutamine, 170 mg of quercetin and 42.5 mg of N-acetyl L-cysteine. Its current label entered the NIH Dietary Supplement Label Database on March 25, 2013.

What is in Gut Feeling?

Each row as the label prints it, per serving of 2 capsules. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Gut Feeling: Supplement Facts rows against the market (DSLD label 19445, January 2026 release)
IngredientAmount% DVAmong products listing it
Biotin125 mcg42%Biotin in Gut Feeling against 9,447 products125 mcg per serving; the middle half of products list 50 mcg to 300 mcg, the median 200 mcg.DV 30 mcg125 mcg

59% of 9,447 products listing biotin give more (median 200 mcg). Per day at the most servings: 250 mcg.

L-Glutamine212.5 mgGlutamine in Gut Feeling against 1,850 products0.212 g per serving; the middle half of products list 0.356 g to 3 g, the median 1 g.0.212 g

80% of 1,850 products listing glutamine give more (median 1 g). Per day at the most servings: 0.425 g.

Quercetin170 mgQuercetin in Gut Feeling against 1,548 products170 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.170 mg

Higher than 66% of 1,548 products listing quercetin (median 100 mg). Per day at the most servings: 340 mg.

N-Acetyl L-Cysteine42.5 mgN-Acetyl Cysteine in Gut Feeling against 1,259 products42.5 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.42.5 mg

86% of 1,259 products listing N-acetyl cysteine give more (median 150 mg). Per day at the most servings: 85 mg.

BromelainBromelain Note: 2400 GDU42.5 mgBromelain in Gut Feeling against 1,337 products42.5 mg per serving; the middle half of products list 25 mg to 200 mg, the median 50 mg.42.5 mg

62% of 1,337 products listing bromelain give more (median 50 mg). Per day at the most servings: 85 mg.

Gamma Oryzanol42.5 mgGamma oryzanol in Gut Feeling against 85 products42.5 mg per serving; the middle half of products list 20 mg to 125 mg, the median 60 mg.42.5 mg

58% of 85 products listing gamma oryzanol give more (median 60 mg). Per day at the most servings: 85 mg.

Golden Seal42.5 mgGoldenseal in Gut Feeling against 308 products42.5 mg per serving; the middle half of products list 40 mg to 385 mg, the median 100 mg.42.5 mg

74% of 308 products listing goldenseal give more (median 100 mg). Per day at the most servings: 85 mg.

Turmeric (root) Extract42.5 mgTurmeric in Gut Feeling against 2,369 products42.5 mg per serving; the middle half of products list 50 mg to 500 mg, the median 150 mg.42.5 mg

82% of 2,369 products listing turmeric give more (median 150 mg). Per day at the most servings: 85 mg.

N-Acetyl-Glucosamine35 mgN-Acetyl Glucosamine in Gut Feeling against 148 products35 mg per serving; the middle half of products list 79 mg to 500 mg, the median 250 mg.35 mg

84% of 148 products listing N-acetyl glucosamine give more (median 250 mg). Per day at the most servings: 70 mg.

Milk Thistle (seed) Extract22.5 mgMilk Thistle in Gut Feeling against 1,277 products22.5 mg per serving; the middle half of products list 90 mg to 300 mg, the median 175 mg.22.5 mg

96% of 1,277 products listing milk thistle give more (median 175 mg). Per day at the most servings: 45 mg.

Source: NIH ODS Dietary Supplement Label Database, label 19445 (entered March 25, 2013), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • 96% of the 1,277 products that print an amount of milk thistle list more than its 22.5 mg of milk thistle (median 175 mg).

The NIH database records 2 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

The products whose ingredient lists overlap most with Gut Feeling's, rare ingredients counting for more.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Use: As a dietary supplement, 2-3 capsules two times per day.
Warnings
Keep out of reach of children.
Pregnant or lactating women should consult their physician prior to use.
Storage
Store in a cool, dry place protected from light.

Source: label statements in DSLD label 19445.

What else is on the label?

Other ingredients: Gelatin, Magnesium Stearate.

How many labels does Gut Feeling have?

One label is on file, entered on March 25, 2013.

  1. Label 19445 (current) Entered March 25, 2013 · on the market · 120 capsules · UPC 8 37654 69372 8

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Kent Holtorf, MD and the Holtorf Medical Group, Inc. (distributor), Torrance, CA. All HoltraCeuticals products.

Where next?