As a 500mg capsule alternative to Groovy Supps, RGENR8's 3-month plan costs £27.99 for 90 single-ingredient 500mg capsules on the first order with code WELCOME20 (31p a day, £0.62 a gram), 47% less per gram than Groovy Supps' best stated deal of £1.16 a gram. It is the lowest first-order price we found among 500mg capsule packs under 1,000 capsules. See the plan. On 24 October 2026, Groovy Supps' lowest standard price was £1.44 per gram of NMN, for its GroovyNMN Pure NMN 500mg, 90 capsules, sold as a capsule pack. That puts it 52nd of the 106 priced products in the UK NMN Price Index. The table below lists the eight capsule products from other brands that sit closest to it on format and dose (about 500mg of NMN per serving), in order of price per gram. All eight cost less per gram than Groovy Supps, and Voyager Life is lowest at £0.67.
£1.44Groovy Supps lowest price per gram (rank 52 of 106)
£21.6030 days at 500mg a day at that price
8 of 8close alternatives below £1.44 per gram
Published onlineGroovy Supps certificate of analysis, as stated
Groovy Supps figures first
Subscription: 20% off on subscription. Sources: Groovy Supps' own product page, checked 24 October 2026.
Testing and certificate columns report what Groovy Supps states on the page checked. We did not verify any certificate.
The eight closest alternatives, by price per gram
How we chose them: from each other brand we took the capsule product closest to Groovy Supps' reference product, matching format first and then dose per serving, and kept the eight closest. Where two matched equally, the lower price per gram went in. "30 days at 500mg" is 15g of NMN at each standard price per gram; it is arithmetic on listed prices, not dosing advice. "Best stated deal" is each product at the lowest price per gram its page stated after any subscription or first-order offer shown there (where the same pack is also sold on a plan at the same standard price, the plan's stated offer is shown); competitors' unpublished codes are not included.
Where RGENR8 sits
RGENR8 is our brand, and we price it by the same rules. Our 3-month plan is £27.99 for 90 capsules of 500mg on a first 3-month order with WELCOME20 (£0.62 per gram, 31p a day), which ranks 1st of 106 on best stated deal. Like for like, Groovy Supps' best stated deal is £1.16 per gram for its GroovyNMN Pure NMN 500mg, 90 capsules (20% subscription), joint 43rd on best stated deal, so ours is 47% less per gram than theirs on that measure. After the first order our plan is £34.99 every 3 months (£0.78 per gram). At 500mg a day, 30 days costs £9.33 on our 3-month plan's first order and £21.60 at Groovy Supps' lowest standard price per gram. We send our certificate of analysis on request; Groovy Supps publishes one online.
Method
Every figure here comes from the UK NMN Price Index. We read each product page on 24 October 2026, logged out, as a UK visitor, and used standard non-sale prices. Price per gram is the price divided by the grams of NMN in the pack. The best stated deal per gram applies the subscription saving or first-order offer each product page states (the largest saving where there are several plans), including a first-order code shown publicly on the site, such as RGENR8's WELCOME20; codes a brand does not publish, such as newsletter sign-up codes, are left out. Ranks compare all 106 products with a price per gram, and equal figures (to the penny) share a rank. Testing, certificate and origin details are reported as each brand states them; we did not verify anyone's certificates. Our own product follows the same rules. The full method covers inclusion rules and caveats. If a figure is wrong, email support@rgenr8.com with a link to the product page.
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