PlainVitamins

Arthro-O

by Nutri-West · tablet or pill · 90 tablets

  • On the market (NIH)
  • DSLD label 27546
  • Serving 1 tablet

Arthro-O by Nutri-West lists 16 ingredients, 16 with an amount per serving of 1 tablet, such as 5 mg of vitamin C, 1.4 mg of manganese, 500 mg of calf bone and 40 mg of thymus. Its current label entered the NIH Dietary Supplement Label Database on November 25, 2013.

What is in Arthro-O?

Each row as the label prints it, per serving of 1 tablet. 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).

Arthro-O: Supplement Facts rows against the market (DSLD label 27546, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin C5 mg8%Vitamin C in Arthro-O against 18,583 products5 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg5 mg

97% of 18,583 products listing vitamin C give more (median 100 mg).

Manganese1.4 mg0.35%

This amount is far outside what other labels list for manganese, or disagrees with the label's own %DV: possibly a unit or transcription slip in the database. Check the label image on DSLD.

from 6 mg of manganese glycerophosphate6 mg
Calf Bone500 mgBone in Arthro-O against 49 products0.5 g per serving; the middle half of products list 0.983 g to 7.5 g, the median 3 g.0.5 g

82% of 49 products listing bone give more (median 3 g).

Thymus40 mgThymus in Arthro-O against 122 products40 mg per serving; the middle half of products list 25 mg to 198.75 mg, the median 50.5 mg.40 mg

57% of 122 products listing thymus give more (median 50.5 mg).

Parotid1 mgParotid in Arthro-O against 43 products1 mg per serving; the middle half of products list 1 mg to 20 mg, the median 2 mg.1 mg

60% of 43 products listing parotid give more (median 2 mg).

Rutin20 mgRutin in Arthro-O against 1,232 products20 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.20 mg

62% of 1,232 products listing rutin give more (median 25 mg).

Shave Grass90 mgHorsetail in Arthro-O against 519 products90 mg per serving; the middle half of products list 20 mg to 200 mg, the median 67 mg.90 mg

Higher than 54% of 519 products listing horsetail (median 67 mg).

Devil's Claw30 mgDevil's Claw in Arthro-O against 162 products30 mg per serving; the middle half of products list 30.25 mg to 507.5 mg, the median 122.5 mg.30 mg

75% of 162 products listing Devil's claw give more (median 122.5 mg).

Hydrangea30 mgHydrangea in Arthro-O against 47 products30 mg per serving; the middle half of products list 50 mg to 976.5 mg, the median 300 mg.30 mg

83% of 47 products listing hydrangea give more (median 300 mg).

Garlic20 mgGarlic in Arthro-O against 1,075 products20 mg per serving; the middle half of products list 50 mg to 500 mg, the median 200 mg.20 mg

86% of 1,075 products listing garlic give more (median 200 mg).

Rose Hips20 mgRose (unspecified) in Arthro-O against 195 products20 mg per serving; the middle half of products list 14.5 mg to 100 mg, the median 30 mg.20 mg

64% of 195 products listing rose (unspecified) give more (median 30 mg).

Buck Wheat Juice15 mgBuckwheat in Arthro-O against 48 products15 mg per serving; the middle half of products list 19 mg to 970 mg, the median 75 mg.15 mg

85% of 48 products listing buckwheat give more (median 75 mg).

Yucca10 mgYucca in Arthro-O against 106 products10 mg per serving; the middle half of products list 25 mg to 450 mg, the median 50 mg.10 mg

80% of 106 products listing yucca give more (median 50 mg).

Alfalfa10 mgAlfalfa in Arthro-O against 477 products10 mg per serving; the middle half of products list 50 mg to 500 mg, the median 200 mg.10 mg

88% of 477 products listing alfalfa give more (median 200 mg).

Cayenne2 mgCapsicum in Arthro-O against 874 products2 mg per serving; the middle half of products list 25 mg to 100 mg, the median 44.5 mg.2 mg

97% of 874 products listing capsicum give more (median 44.5 mg).

Source: NIH ODS Dietary Supplement Label Database, label 27546 (entered November 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:

  • 97% of the 18,583 products that print an amount of vitamin C list more than its 5 mg of vitamin C (median 100 mg).
  • 60% of the 43 products that print an amount of parotid list more than its 1 mg of parotid (median 2 mg).
  • 88% of the 477 products that print an amount of alfalfa list more than its 10 mg of alfalfa (median 200 mg).
  • 97% of the 874 products that print an amount of capsicum list more than its 2 mg of cayenne (filed by NIH under capsicum) (median 44.5 mg).

The NIH database records one serving 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.

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
Directions for use: One tablet daily or as directed.
Warnings
KEEP OUT OF REACH OF CHILDREN.
TAMPER RESISTANT OUTER SEAL - DO NOT USE IF BROKEN.
Allergens and what it does not contain
Contains no starch, salt, sugar, corn, yeast, soy, milk, or preservatives.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 27546.

How many labels does Arthro-O have?

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

  1. Label 27546 (current) Entered November 25, 2013 · on the market · 90 tablets

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

Who makes it?

The label names Nutri-West (manufacturer), Douglas, Wy. All Nutri-West products.

Where next?