STOP PHP Supplement

$36.75

STOP is a combination antioxidant and enzyme formula built around a high dose of niacinamide, three proteolytic enzymes, and a range of botanical and nutrient antioxidants.

Each 3-tablet serving supplies 500 mg of niacin as niacinamide alongside quercetin, MSM, L-glutamine, and standardized botanical extracts.

  • 500 mg niacin as niacinamide per serving
  • Three proteolytic enzymes — bromelain, papain, and serrapeptidase
  • Botanical antioxidants including turmeric, Boswellia, ginger, and skullcap
  • Quercetin, rutin, MSM, and N-acetyl L-cysteine

Bottle size: 90 tablets

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Bottle of STOP by Professional Health Products – antioxidant formula with enzymes and botanicals for inflammation and oxidative stress support
STOP PHP Supplement
$36.75
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What It Is

STOP is a combination formula pairing a high dose of niacinamide with three proteolytic enzymes and a broad range of antioxidant nutrients and botanical extracts. Each 3-tablet serving delivers gram-level amounts of L-glutamine and MSM alongside standardized plant extracts.

Key Benefits

  • Supplies niacin, a B vitamin with a role in normal energy metabolism and normal nervous system function
  • Provides quercetin and rutin, flavonoid compounds with antioxidant properties
  • Supplies N-acetyl L-cysteine and MSM, sulfur-containing compounds the body uses in normal antioxidant pathways
  • Provides three proteolytic enzymes — bromelain, papain, and serrapeptidase
  • Includes turmeric, Boswellia, ginger, and skullcap, botanicals with a long history of traditional use
  • Supplies L-glutamine, an amino acid used throughout normal cellular metabolism

How It Works

Niacin is supplied as niacinamide rather than nicotinic acid. The two forms of vitamin B3 differ in how the body handles them, and niacinamide is the form selected for this formula.

The enzymes are standardized to activity rather than weight alone: bromelain at 2400 GDU, papain at 3000 USP, and serrapeptidase at 220,000 U/g. Activity units describe how much enzymatic work a given quantity performs, which weight in milligrams does not convey on its own.

Cysteine is supplied as N-acetyl L-cysteine, an acetylated form of the amino acid.

Featured Ingredients

  • Niacin as niacinamide (500 mg) — the formula’s highest-dose nutrient
  • L-glutamine (1000 mg) — a free-form amino acid
  • MSM (methylsulfonylmethane, 1000 mg) — an organic sulfur compound
  • Quercetin (400 mg) — a flavonoid, paired here with rutin (100 mg)
  • Turmeric (Curcuma longa) root, 200 mg
  • Boswellia serrata whole plant resin, 200 mg
  • Bromelain (200 mg, 2400 GDU) — a proteolytic enzyme from pineapple
  • Papain (200 mg, 3000 USP) — a proteolytic enzyme from papaya
  • Serrapeptidase (20 mg, 220,000 U/g) — a proteolytic enzyme
  • Ginger (Zingiber officinale) root, 100 mg
  • N-acetyl L-cysteine (100 mg) — an acetylated form of the amino acid cysteine
  • Skullcap (Scutellaria baicalensis) herb, 100 mg — Chinese skullcap, used traditionally

Supplement Facts

Serving Size: 3 Tablets
Servings Per Container: 30

Amount Per Serving% Daily Value
Niacin (Niacinamide) 500 mg3125%
L-Glutamine1000 mg, *
MSM (Methylsulfonylmethane)1000 mg, *
Quercetin400 mg, *
Turmeric (Curcuma longa)(root)200 mg, *
Bromelain 2400 GDU200 mg, *
Papain 3000 USP200 mg, *
Boswellia serrata (whole plant-resin)200 mg, *
Ginger (Zingiber officinale)(root)100 mg, *
N-Acetyl L-Cysteine100 mg, *
Rutin100 mg, *
Skullcap (Scutellaria baicalensis)(herb)100 mg, *
Serrapeptidase 220000 U/g20 mg, *

Percent Daily Values are based on a 2000 calorie diet.

*Daily Value not established.

Other Ingredients: Silicified Microcrystalline cellulose.

Sourcing & Quality

Enzymes in this formula are standardized to activity units — bromelain to 2400 GDU, papain to 3000 USP, and serrapeptidase to 220,000 U/g. The formula is supplied in tablet form.

Warnings

  • If you are pregnant or nursing, consult your Health Care Professional before using.
  • Not intended for use by children.
  • This formula supplies niacin at 3,125% of the Daily Value. Do not exceed the suggested use, and consult your healthcare professional before use if you take any medication or are under medical supervision.
  • Keep out of reach of children.
  • Consult your healthcare professional before use if pregnant, nursing, taking medications, or under medical supervision.
  • Store in a cool, dry place.

Frequently Asked Questions

What is in STOP?

Each 3-tablet serving supplies 500 mg of niacin as niacinamide, 1000 mg of L-glutamine, 1000 mg of MSM, 400 mg of quercetin, and 100 mg of rutin. It also includes three proteolytic enzymes — bromelain at 2400 GDU, papain at 3000 USP, and serrapeptidase at 220,000 U/g — along with turmeric root, Boswellia serrata resin, ginger root, Scutellaria baicalensis, and N-acetyl L-cysteine. The full panel is listed in the Supplement Facts above.

What form does STOP come in, and how many servings are in a bottle?

STOP is supplied as tablets. A bottle contains 90 tablets. The serving size is 3 tablets, which works out to 30 servings per bottle.

What do the enzyme activity units mean?

Proteolytic enzymes are measured by activity rather than weight alone, because two products with the same milligram amount can differ in how much enzymatic work they perform. GDU (gelatin digesting units) is the standard measure for bromelain, USP units for papain, and U/g for serrapeptidase. In this formula bromelain is standardized to 2400 GDU, papain to 3000 USP, and serrapeptidase to 220,000 U/g.

Why niacinamide rather than niacin?

Vitamin B3 exists in two common supplemental forms, nicotinic acid and niacinamide. They are handled differently by the body and are not interchangeable. This formula uses niacinamide, at 500 mg per serving.

Does STOP contain gluten or allergens?

This formula does not list gluten or major allergens among its ingredients, but it is not labeled gluten-free. The enzymes bromelain and papain are derived from pineapple and papaya respectively. Please refer to the product label regarding specific sensitivities.