Source Naturals St. John's Positive Thoughts™, 90 Tablets supplement bottle
Source Naturals

St. John's Positive Thoughts™, 90 Tablets

What We Researched
30 active ingredients analyzed · 5 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
79
Product Score Fair
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as zinc ascorbate) 51 mg 57%
Thiamin (as thiamin mononitrate) 25 mg 2,083%
Riboflavin (vitamin B-2) 25 mg 1,923%
Niacin (as Niacinamide) 50 mg 313%
Vitamin B-6 (as pyridoxine HCI) 50 mg 2,941%
Folate (as folic acid) (800 mcg folic acid) 1,360 mcg DFE 340%
Vitamin B-12 (as cyanocobalamin) 50 mcg 2,083%
Biotin 300 mcg 1,000%
Pantothenic Acid (as calcium D-pantothenate) 23 mg 460%
Calcium (as dibasic calcium phosphate & naturally occurring) 118 mg 9%
Magnesium (as magnesium oxide & taurine complex) 200 mg 48%
Zinc (as zinc ascorbate) 10 mg 91%
Manganese (as manganese citrate) 3 mg 130%
St. John's Wort Aerial Parts Ext. (0.3%) Yielding 2.7 mg Hypericins 900 mg
GABA (gamma-aminobutyric acid) 500 mg
L-Tyrosine 200 mg
Taurine (as magnesium taurine complex) 185 mg
Holy Basil Leaf Extract 100 mg
Lemon Balm Leaf Extract 100 mg
Valerian Root Extract 100 mg
L-Phenylalanine 100 mg
DMAE (as bitartrate) 60 mg
L-Theanine 50 mg
N-Acetyl L-Tyrosine 50 mg
Relora® (Phellodendron amurense bark extract and Magnolia officinalis bark extract blend) 50 mg
Bioavailability Good

Absorption Rating

  • Vitamin C (as zinc ascorbate) Good
  • Thiamin (as thiamin mononitrate) Fair
  • Riboflavin (vitamin B-2) Good
  • Niacin (as Niacinamide) Good
  • Vitamin B-6 (as pyridoxine HCI) Fair
  • Folate (as folic acid) (800 mcg folic acid) Fair
  • Vitamin B-12 (as cyanocobalamin) Fair
  • Biotin Good
  • Pantothenic Acid (as calcium D-pantothenate) Good
  • Calcium (as dibasic calcium phosphate & naturally occurring) Fair
  • Magnesium (as magnesium oxide & taurine complex) Poor
  • Zinc (as zinc ascorbate) Fair
  • Manganese (as manganese citrate) Good
  • St. John's Wort Aerial Parts Ext. (0.3%) Yielding 2.7 mg Hypericins Fair
  • GABA (gamma-aminobutyric acid) Poor
  • L-Tyrosine Good
  • Taurine (as magnesium taurine complex) Good
  • Holy Basil Leaf Extract Fair
  • Lemon Balm Leaf Extract Fair
  • Valerian Root Extract Good
  • L-Phenylalanine Good
  • DMAE (as bitartrate) Fair
  • L-Theanine Good
  • N-Acetyl L-Tyrosine Fair
  • Relora® (Phellodendron amurense bark extract and Magnolia officinalis bark extract blend) Good
Other Ingredients Excellent

Fillers & Additives

  • Dibasic Calcium Phosphate
  • Stearic Acid
  • Acacia Gum
  • Modified Cellulose Gum
  • Silica
Efficacy Fair

Dosage Analysis

  • Vitamin C (as zinc ascorbate) 51 mg Under-dosed
  • Thiamin (as thiamin mononitrate) 25 mg Effective
  • Riboflavin (vitamin B-2) 25 mg Effective
  • Niacin (as Niacinamide) 50 mg High
  • Vitamin B-6 (as pyridoxine HCI) 50 mg Effective
  • Folate (as folic acid) (800 mcg folic acid) 1,360 mcg DFE High
  • Vitamin B-12 (as cyanocobalamin) 50 mcg Effective
  • Biotin 300 mcg Effective
  • Pantothenic Acid (as calcium D-pantothenate) 23 mg Effective
  • Calcium (as dibasic calcium phosphate & naturally occurring) 118 mg Under-dosed
  • Magnesium (as magnesium oxide & taurine complex) 200 mg Effective
  • Zinc (as zinc ascorbate) 10 mg Effective
  • Manganese (as manganese citrate) 3 mg Effective
  • St. John's Wort Aerial Parts Ext. (0.3%) Yielding 2.7 mg Hypericins 900 mg Effective
  • GABA (gamma-aminobutyric acid) 500 mg High
  • L-Tyrosine 200 mg Under-dosed
  • Taurine (as magnesium taurine complex) 185 mg Under-dosed
  • Holy Basil Leaf Extract 100 mg Under-dosed
  • Lemon Balm Leaf Extract 100 mg Under-dosed
  • Valerian Root Extract 100 mg Under-dosed
  • L-Phenylalanine 100 mg Under-dosed
  • DMAE (as bitartrate) 60 mg Under-dosed
  • L-Theanine 50 mg Under-dosed
  • N-Acetyl L-Tyrosine 50 mg Under-dosed
  • Relora® (Phellodendron amurense bark extract and Magnolia officinalis bark extract blend) 50 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Fat 0.5 g 1%*
Total Carbohydrate 0.5 g <1%
Dietary Fiber 1 g 4%
Vitamin C (as zinc ascorbate) 51 mg 57%
Thiamin (as thiamin mononitrate) 25 mg 2,083%
Riboflavin (vitamin B-2) 25 mg 1,923%
Niacin (as Niacinamide) 50 mg 313%
Vitamin B-6 (as pyridoxine HCI) 50 mg 2,941%
Folate (as folic acid) (800 mcg folic acid) 1,360 mcg DFE 340%
Vitamin B-12 (as cyanocobalamin) 50 mcg 2,083%
Biotin 300 mcg 1,000%
Pantothenic Acid (as calcium D-pantothenate) 23 mg 460%
Calcium (as dibasic calcium phosphate & naturally occurring) 118 mg 9%
Magnesium (as magnesium oxide & taurine complex) 200 mg 48%
Zinc (as zinc ascorbate) 10 mg 91%
Manganese (as manganese citrate) 3 mg 130%
Sodium 15 mg 1%
St. John's Wort Aerial Parts Ext. (0.3%) Yielding 2.7 mg Hypericins 900 mg
GABA (gamma-aminobutyric acid) 500 mg
L-Tyrosine 200 mg
Taurine (as magnesium taurine complex) 185 mg
Holy Basil Leaf Extract 100 mg
Lemon Balm Leaf Extract 100 mg
Valerian Root Extract 100 mg
L-Phenylalanine 100 mg
DMAE (as bitartrate) 60 mg
L-Theanine 50 mg
N-Acetyl L-Tyrosine 50 mg
Relora® (Phellodendron amurense bark extract and Magnolia officinalis bark extract blend) 50 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dibasic Calcium Phosphate Generally_safe

It is used as a filler and to improve tablet hardness.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Acacia Gum Safe

Binds tablet ingredients together. Also a source of soluble fiber.

Modified Cellulose Gum Generally_safe

It is used to improve the texture and stability of products.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$18$17$16$15$14 Mar 12 $16.00
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
Related Supplements
Frequently Asked Questions
Is Source Naturals St. John's Positive Thoughts™, 90 Tablets a good supplement?

Source Naturals St. John's Positive Thoughts™, 90 Tablets received a product quality score of 79/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 30 active ingredients with 30 servings per container. Of the 5 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals St. John's Positive Thoughts™, 90 Tablets?

Source Naturals St. John's Positive Thoughts™, 90 Tablets contains 30 active ingredients: Calories (10), Total Fat (0.5 g), Total Carbohydrate (0.5 g), Dietary Fiber (1 g), Vitamin C (as zinc ascorbate) (51 mg), Thiamin (as thiamin mononitrate) (25 mg), and 24 more. Notable high-dose ingredients include Thiamin at 2,083% DV, Riboflavin at 1,923% DV, Niacin at 313% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals St. John's Positive Thoughts™, 90 Tablets safe to take?

Source Naturals St. John's Positive Thoughts™, 90 Tablets has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.