Herbs & botanicals
St. John’s wort
A plant with yellow flowers. Taken for mood – studies look fairly good, but it weakens many medicines, including the birth control pill.
48 products from US online stores, sorted by what 300 mg of St. John’s wort extract costs – not by the price per pack.
4¢Lowest cost
per 300 mg St. John’s wort extract
- Prices checked Nov 1, 2026, US
- No paid placements
What does 300 mg mean?
- St. John’s wort extract per serving in most of the products we checked
- 300–1,000 mgSt. John’s wort extract per serving in most of the products we checked
- 300 mg is a fixed amount to compare by: half of the 48 products we checked have up to 450 mg per serving, the other half more.
- There’s no official daily amount for St. John’s wort extract.
We compare by 300 mg only so products line up – it’s not a recommendation. Not medical advice.
Where products miss quality points
How the 48 products score
- Very good 90+: 0
- Good 75+: 47
- Fair 60+: 1
- Low under 60: 0
- have no seal from an independent testing program
- 100%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 2 whose label says “third-party tested”
The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.
We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works
Pack size
Compare packs of a similar size.
All sizes in one list can affect the results – big packs usually cost less per 300 mg. Pick a size above to compare packs that are alike.
48 products · cheapest per 300 mg St. John’s wort extract first
- Rank 1
Swanson Vitamins
Full Spectrum St. John's Wort, 375 mg
Whole herb · Capsules
75Good qualityCountry not stated4¢per 300 mg
Lowest
- Pack
- $5.99120 capsules
- St. John’s wort extract per serving
- 375 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (375 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 2
Swanson Vitamins
Full Spectrum St. John's Wort
Whole herb · Capsules
75Good qualityCountry not stated4¢per 300 mg
Lowest
- Pack
- $5.99120 capsules
- St. John’s wort extract per serving
- 375 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (375 mg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 3
Nature's Answer
St John's Wort Extract - Low Alcohol Liquid
Extract · Liquid
75Good qualityMade in USA5.1¢per 300 mg
27% more
- Pack
- $4.9929.6 ml (1 fl oz)30 servings
- St. John’s wort extract per serving
- 1,000 mgin 1 ml
- Pack lasts
- 98 daysif you take 300 mg a day
naturesanswer.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 4
Swanson Vitamins
Full Spectrum St. John's Wort, 375 mg
Whole herb · Capsules
75Good qualityCountry not stated5.7¢per 300 mg
43% more
- Pack
- $4.2960 capsules
- St. John’s wort extract per serving
- 375 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (375 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 5
Swanson Vitamins
Full Spectrum St. John's Wort
Whole herb · Capsules
75Good qualityCountry not stated5.7¢per 300 mg
43% more
- Pack
- $4.2960 capsules
- St. John’s wort extract per serving
- 375 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (375 mg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 6
Nutricost
St. John's Wort, 500 mg
Whole herb · Capsules
80Good qualityMade in USA6¢per 300 mg
50% more
- Pack
- $11.95120 capsules
- St. John’s wort extract per serving
- 500 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 7
Nature's Way
St. John's Wort
Whole herb · Capsules
75Good qualityPacked in USA7¢per 300 mg
74% more
- Pack
- $14.61180 capsules90 servings
- St. John’s wort extract per serving
- 700 mgin 2 capsules
- Pack lasts
- 180 daysif you take 1 capsule (350 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 8
Nutricost
St Johns Wort Capsules
Whole herb · Capsules
75Good qualityMade in USA7¢per 300 mg
75% more
- Pack
- $13.97120 capsules60 servings
- St. John’s wort extract per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 9
Nature's Way
St. John's Wort
Whole herb · Capsules
75Good qualityCountry not stated7.6¢per 300 mg
89% more
- Pack
- $8.81100 capsules50 servings
- St. John’s wort extract per serving
- 700 mgin 2 capsules
- Pack lasts
- 100 daysif you take 1 capsule (350 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 10
Amazing Nutrition
Herbal Secrets St. John's Wort Supplement
Extract · Capsules
75Good qualityMade in USA7.6¢per 300 mg
91% more
- Pack
- $7.9990 capsules45 servings
- St. John’s wort extract per serving
- 700 mgin 2 capsules
- Pack lasts
- 90 daysif you take 1 capsule (350 mg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 11
California Gold Nutrition
St. John's Wort Extract, 300 mg
Extract · Capsules
80Good qualityCountry not stated8¢per 300 mg
101% more
- Pack
- $19.29240 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 240 daysif you take 1 capsule (300 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 12
Amazing Nutrition
Amazing Formulas St. John's Wort
Extract · Capsules
80Good qualityMade in USA8.3¢per 300 mg
108% more
- Pack
- $14.98180 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 180 daysif you take 1 capsule (300 mg) a day
amazingnutrition.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 13
Source Naturals
St. John's Wort 450, 450 mg
Extract · Tablets
80Good qualityCountry not stated9.1¢per 300 mg
128% more
- Pack
- $24.63180 tablets
- St. John’s wort extract per serving
- 450 mgin 1 tablet
- Pack lasts
- 180 daysif you take 1 tablet (450 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 14
Swanson Vitamins
St. John's Wort Extract - Standardized
Extract · Capsules
80Good qualityCountry not stated9.8¢per 300 mg
146% more
- Pack
- $11.79120 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (300 mg) a day
swansonvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 15
Toniiq
St. John's Wort 0.3%
Extract · Capsules
80Good qualityCountry not stated$0.10per 300 mg
150% more
- Pack
- $19.97120 capsules60 servings
- St. John’s wort extract per serving
- 1,000 mgin 2 capsules
- Pack lasts
- 120 daysif you take 1 capsule (500 mg) a day
toniiq.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 16
Nature's Way
St. John’s Wort Herb
Whole herb · Capsules
75Good qualityPacked in USA$0.10per 300 mg
156% more
- Pack
- $21.49180 capsules90 servings
- St. John’s wort extract per serving
- 700 mgin 2 capsules
- Pack lasts
- 180 daysif you take 1 capsule (350 mg) a day
naturesway.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 17
Swanson Vitamins
St. John's Wort Extract, Standardized, 300 mg
Extract · Capsules
80Good qualityCountry not stated$0.10per 300 mg
158% more
- Pack
- $12.38120 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (300 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 18
Sundance Vitamins
St. John's Wort 300mg
Extract · Capsules
80Good qualityCountry not stated$0.12per 300 mg
192% more
- Pack
- $6.9960 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (300 mg) a day
sundancevitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 19
Nature's Bounty
St. John's Wort, 300 mg
Extract · Capsules
80Good qualityMade in USA$0.12per 300 mg
197% more
- Pack
- $11.88100 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 100 daysif you take 1 capsule (300 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 20
Terry Naturally
St. John's Wort 900, 900 mg
Extract · Tablets
80Good qualityCountry not stated$0.12per 300 mg
207% more
- Pack
- $22.0660 tablets
- St. John’s wort extract per serving
- 900 mgin 1 tablet
- Pack lasts
- 60 daysif you take 1 tablet (900 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 21
The Vitamin Shoppe
St. John's Wort Extract, 300 mg
Extract · Capsules
80Good qualityCountry not stated$0.12per 300 mg
213% more
- Pack
- $14.99120 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (300 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 22
Nature's Way
St. John’s Wort Herb
Whole herb · Capsules
75Good qualityCountry not stated$0.13per 300 mg
222% more
- Pack
- $14.99100 capsules50 servings
- St. John’s wort extract per serving
- 700 mgin 2 capsules
- Pack lasts
- 100 daysif you take 1 capsule (350 mg) a day
naturesway.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 23
Nature's Answer
St. John's Wort Extract, Alcohol-Free, 1,000 mg
Extract · Liquid
75Good qualityMade in USA$0.13per 300 mg
233% more
- Pack
- $13.1229.6 ml (1 fl oz)30 servings
- St. John’s wort extract per serving
- 1,000 mgin 1 ml
- Pack lasts
- 98 daysif you take 300 mg a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 24
Solaray
Organic St. John's Wort
Whole herb · Capsules
75Good qualityCountry not stated$0.13per 300 mg
234% more
- Pack
- $19.99100 capsules50 servings
- St. John’s wort extract per serving
- 900 mgin 2 capsules
- Pack lasts
- 100 daysif you take 1 capsule (450 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 25
Terry Naturally
St. John’s Wort 900
Whole herb · Tablets
80Good qualityCountry not stated$0.14per 300 mg
261% more
- Pack
- $25.9560 tablets
- St. John’s wort extract per serving
- 900 mgin 1 tablet
- Pack lasts
- 60 daysif you take 1 tablet (900 mg) a day
europharmausa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 26
Nature's Truth
St John's Wort 600 mg
Extract · Capsules
80Good qualityCountry not stated$0.16per 300 mg
289% more
- Pack
- $13.9990 capsules45 servings
- St. John’s wort extract per serving
- 600 mgin 2 capsules
- Pack lasts
- 90 daysif you take 1 capsule (300 mg) a day
naturestruth.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 27
Herb Pharm
St. John's Wort
Extract · Liquid
75Good qualityCountry not stated$0.16per 300 mg
300% more
- Pack
- $56.98118.3 ml (4 fl oz)169 servings
- St. John’s wort extract per serving
- 633 mgin 0.7 ml
- Pack lasts
- 356 daysif you take 300 mg a day
herb-pharm.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 28
California Gold Nutrition
EuroHerbs, St. John's Wort Extract, Euromed Quality, 300 mg
Extract · Capsules
80Good qualityMade in USA$0.17per 300 mg
324% more
- Pack
- $10.1760 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (300 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 29
Nature's Answer
St John's Wort Extract - Alcohol Free Liquid
Extract · Liquid
75Good qualityMade in USA$0.17per 300 mg
325% more
- Pack
- $16.9930 servings
- St. John’s wort extract per serving
- 1,000 mg
- Pack lasts
- 100 daysif you take 300 mg a day
naturesanswer.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 30
Oregon's Wild Harvest
St. John's Wort Extract - Organic Alcohol-Removed
Extract · Liquid
75Good qualityMade in USA$0.18per 300 mg
358% more
- Pack
- $35.9559 servings
- St. John’s wort extract per serving
- 1,000 mg
- Pack lasts
- 196 daysif you take 300 mg a day
oregonswildharvest.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 31
Oregon's Wild Harvest
St. John's Wort Organic Extract
Extract · Liquid
75Good qualityMade in USA$0.19per 300 mg
375% more
- Pack
- $18.9530 servings
- St. John’s wort extract per serving
- 1,000 mg
- Pack lasts
- 100 daysif you take 300 mg a day
oregonswildharvest.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 32
Paradise Herbs
St. John's Wort
Extract · Capsules
80Good qualityMade in USA$0.20per 300 mg
401% more
- Pack
- $17.9990 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (300 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 33
Paradise Herbs
St Johns Wort
Extract · Capsules
80Good qualityMade in USA$0.20per 300 mg
401% more
- Pack
- $17.9990 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (300 mg) a day
paradiseherbs.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 34
Solaray
Vital Extracts, St. John's Wort, 900 mg
Extract · Tablets
80Good qualityCountry not stated$0.20per 300 mg
408% more
- Pack
- $36.4960 tablets
- St. John’s wort extract per serving
- 900 mgin 1 tablet
- Pack lasts
- 60 daysif you take 1 tablet (900 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 35
Oregon's Wild Harvest
St. John's Wort Extract - Organic Alcohol-Removed
Extract · Liquid
75Good qualityMade in USA$0.20per 300 mg
410% more
- Pack
- $20.3630 servings
- St. John’s wort extract per serving
- 1,000 mg
- Pack lasts
- 100 daysif you take 300 mg a day
oregonswildharvest.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 36
Herb Pharm
St. John's Wort
Extract · Liquid
75Good qualityCountry not stated$0.20per 300 mg
412% more
- Pack
- $18.9842 servings
- St. John’s wort extract per serving
- 663 mg
- Pack lasts
- 92 daysif you take 300 mg a day
herb-pharm.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 37
Solaray
Vital Extracts, St. John's Wort
Extract · Capsules
75Good qualityCountry not stated$0.21per 300 mg
437% more
- Pack
- $19.2960 capsules30 servings
- St. John’s wort extract per serving
- 900 mgin 2 capsules
- Pack lasts
- 60 daysif you take 1 capsule (450 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 38
Solaray
Vital Extracts, St. John's Wort, 300 mg
Extract · Capsules
80Good qualityCountry not stated$0.23per 300 mg
478% more
- Pack
- $27.69120 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (300 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 39
Vitanica
St. John’s Wort
Extract · Capsules
80Good qualityCountry not stated$0.23per 300 mg
483% more
- Pack
- $20.9590 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (300 mg) a day
vitanica.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 40
Vitacost
St. John's Wort Extract, 300 mg
Extract · Capsules
75Good qualityCountry not stated$0.24per 300 mg
506% more
- Pack
- $14.5160 capsules
- St. John’s wort extract per serving
- 300 mgin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (300 mg) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
Good to know
- Fact
- 1,050%more per 300 mg for the most expensive product than for the cheapest.
- Fact
- 27%more per 300 mg for the cheapest extract than for the cheapest whole herb.
How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check
The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.
How we calculate
Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.
Found a mistake or a product we should add? Email us