St John's Wort MoodBoost Tablets 250mg THR, 90 tablets
£15.99 for 90 tablets at Simply Supplements. That works out at 21p per 300 mg, which ranks it 1st of the 5 st John's wort products we price across 4 UK retailers.
At one 300 mg dose a day, this pack lasts 2 months. A month is 30 days, so twelve of them is not quite a year.
How we worked it out
- Servings: 90 ÷ 1 per serving = 90
- In the pack: 90 × 250 mg = 22.5 g
- £15.99 ÷ 22.5 g × 300 mg = 21.3p per 300 mg
- A week 21.3p × 7 = £1.49 · a month × 30 = £6.40 · a year × 365 = £77.82
- Amount per serving: extract weight stated on the label.
The standard dose is a comparison unit, not a recommendation. Always confirm the price on the retailer's site. How we compare everything.
How it compares: st John's wort
All 5, ranked →
Ranked purely by price per 300 mg. 1 combination product also contain st John's wort.
On the label
- St John's wort · St John's wort (0.3% hypericin)
- 250 mg per serving (extract weight stated on the label)
- Pack
- 90 tablets · 90 servings · 1 tablet(s) a serving
- Cost per serving
- 18p (90 servings in the pack)
More label details
- Testing
- Claimed on the label (not verified by us)
- Barcode
- 5060397190079
- Sold by
- Simply Supplements
- What the listing says
- “each easy-to-swallow tablet contains 250mg of St John's Wort extract” · “confirmed from the retailer's own product page, not this listing's text: pack units 90; pack unit type tablet; units per serving 1.0”
Add to your basket
View basketYour basket prices everything you take together: whole packs, delivery included, from as few websites as you like.
One 300 mg dose is our comparison unit, not a recommendation.
Add to my stack
My stackSee when it runs out, the day to reorder by and what it costs you a day. Free, kept on this device.
Filled in from the label’s serving: 1 tablet.
What you paid
Optional. At Simply Supplements today: £15.99.
“Order by” allows 3 working days’ delivery from Simply Supplements and your spare days.
Price history
No price change since 21 September 2026. Checked on 29 days, most recently 20 October 2026.
- Price at every check
- £15.99Simply Supplements
- First recorded
- £15.9921 Sept
- Checked on
- 29 dayssince 21 Sept
- First checked at Simply Supplements: £15.99
Questions about this product
How much does Simply Supplements St John's Wort MoodBoost Tablets 250mg THR cost per 300 mg?
21p per 300 mg, from £15.99 for 90 tablets at Simply Supplements, checked on 20 October 2026.
Is it the cheapest st John's wort in the UK?
Yes. Of the 5 we price across 4 UK retailers, this is the cheapest per 300 mg.
How long does one pack last?
2 months at one 300 mg dose. The pack holds 22.5 g in total.
About Simply Supplements
Founded 2004 · Yaxley, Peterborough, England
Simply Supplements is an online vitamins and supplements retailer that started in Guernsey in 2004 and is now based in Yaxley, near Peterborough. It is the trading name of Pinnacle Health Nutrition Ltd, a privately owned UK company.
All 134 Simply Supplements products, priced per doseVisit Simply Supplements (opens in a new tab)
More from Simply Supplements
- Apple Cider Vinegar Capsulesapple cider vinegar powder · 180 capsules3p per 500 mgCheapest per dose in its tableDetails and price history
- Calcium 1000mg & Vitamin D3 400iu Tabletsother forms of calcium · 180 tablets3p per 500 mg calciumCheapest per dose in its tableDetails and price history
- L-Cholineother forms of choline · 120 capsules5p per 250 mg cholineCheapest per dose in its tableDetails and price history
- Marine Collagen 1500mgmarine collagen · 180 tablets68p per 10 gCheapest per dose in its tableDetails and price history
