PlainVitamins

Signal//Os

by Pruvit · capsule · 90 capsules

  • On the market (NIH)
  • DSLD label 277596
  • Serving 3 capsules
  • 30 servings

Signal//Os by Pruvit lists 8 ingredients, 8 with an amount per serving of 3 capsules, such as 200 mg of L-theanine, 125 mg of 5-htp, 100 mg of C-med 100 and 100 mg of valerian. Its current label entered the NIH Dietary Supplement Label Database on December 13, 2022.

What is in Signal//Os?

Each row as the label prints it, per serving of 3 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).

Signal//Os: Supplement Facts rows against the market (DSLD label 277596, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Theanine200 mgTheanine in SIGNAL//OS against 1,602 products200 mg per serving; the middle half of products list 90 mg to 200 mg, the median 100 mg.200 mg

Higher than 61% of 1,602 products listing theanine (median 100 mg).

5-Htpas Griffonia125 mg5-HTP in SIGNAL//OS against 676 products125 mg per serving; the middle half of products list 50 mg to 100 mg, the median 100 mg.125 mg

Higher than 83% of 676 products listing 5-HTP (median 100 mg).

C-Med 100as Uncaria tomentosa100 mgCat's Claw in SIGNAL//OS against 300 products100 mg per serving; the middle half of products list 45 mg to 500 mg, the median 200 mg.100 mg

57% of 300 products listing Cat's claw give more (median 200 mg).

Valerian100 mgValerian in SIGNAL//OS against 647 products100 mg per serving; the middle half of products list 80 mg to 450 mg, the median 200 mg.100 mg

64% of 647 products listing valerian give more (median 200 mg).

Lemon Balm extract100 mgLemon balm in SIGNAL//OS against 475 products100 mg per serving; the middle half of products list 50 mg to 200 mg, the median 100 mg.100 mg

42% of 475 products listing lemon balm give more (median 100 mg).

Magnesium Aspartate100 mg24%*

The label names the compound (Magnesium Aspartate); its amount is likely the compound's weight, not the magnesium it holds, so it is not placed among other products.

Ashwagandhaas Ashwagandha, Ashwagandha100 mgAshwagandha in SIGNAL//OS against 1,646 products100 mg per serving; the middle half of products list 125 mg to 500 mg, the median 250 mg.100 mg

79% of 1,646 products listing ashwagandha give more (median 250 mg).

Bioperineas Black Pepper Extract5 mgBlack Pepper in SIGNAL//OS against 2,363 products5 mg per serving; the middle half of products list 5 mg to 10 mg, the median 5 mg.5 mg

33% of 2,363 products listing black pepper give more (median 5 mg).

* % Daily Value computed from the printed amount and the FDA Daily Value (21 CFR 101.9); the label prints none for that row.

Source: NIH ODS Dietary Supplement Label Database, label 277596 (entered December 13, 2022), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

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.

Which products have the closest formulas?

1 product lists the very same ingredients; the nearest amounts come first.

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
Directions: Take 2 AM capsules before 9 am, and 3 PM capsules in the evening after 8 pm.
Warnings
Caution: As with any new supplement, consult with your physician before using this product.
If you are using prescription medication or over the counter medications, are pregnant or nursing, have any pre-existing medical conditions, you should consult with your physician before using this product.
Not intended for use by children under the age of 18.

Source: label statements in DSLD label 277596.

What else is on the label?

Other ingredients: Inulin.

How many labels does Signal//Os have?

2 labels are on file under this name since December 13, 2022: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 277596 (current) Entered December 13, 2022 · on the market · 90 capsules
  2. Label 277595 Entered December 13, 2022 · on the market · 60 capsules

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

Who makes it?

The label names Pruvit Ventures Inc. (distributor), Melissa, Texas. All Pruvit products.

Where next?