PlainVitamins

Smoking Jitters

by Signature Supplements · capsule · 100 capsules

  • On the market (NIH)
  • DSLD label 338949
  • Serving 1 to 2 capsules; amounts per 3 capsules
  • 100 servings

Smoking Jitters by Signature Supplements lists 9 ingredients, 9 with an amount per serving of 3 capsules, such as 175 mg of L-glutamine, 150 mg of magnesium, 150 mg of N-acetyl-L-cysteine and 100 mg of peppermint. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2025.

What is in Smoking Jitters?

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).

Smoking Jitters: Supplement Facts rows against the market (DSLD label 338949, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Glutamine175 mgGlutamine in Smoking Jitters against 1,850 products0.175 g per serving; the middle half of products list 0.356 g to 3 g, the median 1 g.0.175 g

83% of 1,850 products listing glutamine give more (median 1 g). Per day at the most servings: 0.7 g.

Magnesiumas Magnesium Oxide150 mg36%*Magnesium in Smoking Jitters against 14,003 products150 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg150 mg

Higher than 70% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 600 mg. 1.7 times the adult UL a day.

N-Acetyl-L-Cysteine150 mgN-Acetyl Cysteine in Smoking Jitters against 1,259 products150 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.150 mg

50% of 1,259 products listing N-acetyl cysteine give more (median 150 mg). Per day at the most servings: 600 mg.

Peppermint100 mgPeppermint in Smoking Jitters against 278 products100 mg per serving; the middle half of products list 20 mg to 207.5 mg, the median 50 mg.100 mg

Higher than 62% of 278 products listing peppermint (median 50 mg). Per day at the most servings: 400 mg.

Lobelia50 mg
L-Glycine50 mgGlycine in Smoking Jitters against 1,078 products50 mg per serving; the middle half of products list 100 mg to 846 mg, the median 300 mg.50 mg

79% of 1,078 products listing glycine give more (median 300 mg). Per day at the most servings: 200 mg.

Chamomile flower extract50 mgChamomile in Smoking Jitters against 350 products50 mg per serving; the middle half of products list 30 mg to 150 mg, the median 75 mg.50 mg

54% of 350 products listing chamomile give more (median 75 mg). Per day at the most servings: 200 mg.

Hopsas Humulus lupulus50 mgHops in Smoking Jitters against 342 products50 mg per serving; the middle half of products list 50 mg to 150 mg, the median 75 mg.50 mg

60% of 342 products listing hops give more (median 75 mg). Per day at the most servings: 200 mg.

L-Theanine50 mgTheanine in Smoking Jitters against 1,602 products50 mg per serving; the middle half of products list 90 mg to 200 mg, the median 100 mg.50 mg

79% of 1,602 products listing theanine give more (median 100 mg). Per day at the most servings: 200 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 338949 (entered September 25, 2025), 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?

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:

  • At 4 servings a day, the most its directions give, the label lists 600 mg of magnesium, 1.7 times the adult Tolerable Upper Intake Level.
  • 79% of the 1,602 products that print an amount of theanine list more than its 50 mg of L-theanine (filed by NIH under theanine) (median 100 mg).

The NIH database records 4 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 Smoking Jitters'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
Directions: For adults over 18 - Take 1 to 2 Tablets 4 times daily. We suggest you allow 2 to 3 hours of time between each of the 4 dosages.
Warnings
Not intended for use by persons under the age of 18
As a reminder, discuss the supplements and medications you take with your health care providers. Warning: If you are pregnant, nursing or taking any medications, consult your doctor before use.
Lobelia may cause nausea or vomiting. Discontinue use and consult your doctor if any adverse reactions occur.
Allergens and what it does not contain
No: Chemical Fillers or Binders, Artificial coloring, artificial flavor, preservatives, yeast, corn, milk or milk derivatives, lactose, salt, sodium, soy, sugar, gluten, starch or wheat.

Source: label statements in DSLD label 338949.

What else is on the label?

Other ingredients: Cellulose.

How many labels does Smoking Jitters have?

One label is on file, entered on September 25, 2025.

  1. Label 338949 (current) Entered September 25, 2025 · on the market · 100 capsules

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

Who makes it?

The label names Signature Supplements (distributor), Irvine, California. All Signature Supplements products.

Where next?