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DoNotAgeBotanicals & extractsVegan

Probiotic, 30 capsules

£19.00 for 30 capsules at Healf. It carries more than one active ingredient, so it is not ranked against single-ingredient products. Each price below counts one ingredient only.

What it really costs, per 5 g£31.67One 5 g dose is our comparison unit for inulin / FOS. It is not a recommendation.
A day£31.67
A week£221.67
A month£950.00
A year£11558.33

At one 5 g dose a day, this pack lasts under a day. A month is 30 days, so twelve of them is not quite a year.

How we worked it out

Inulin / FOS

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 100 mg = 3 g
  • £19.00 ÷ 3 g × 5 g = £31.67 per 5 g
  • A week £31.67 × 7 = £221.67 · a month × 30 = £950.00 · a year × 365 = £11558.33
  • Amount per serving: stated on the label.

Vitamin B12

  • Servings: 30 ÷ 1 per serving = 30
  • In the pack: 30 × 2.5 µg = 75 µg
  • £19.00 ÷ 75 µg × 1 mg = £253.33 per 1 mg
  • A week £253.33 × 7 = £1773.33 · a month × 30 = £7600.00 · a year × 365 = £92466.67
  • Amount per serving: 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: inulin / FOS

All 10, ranked →
High Fibre Inulin PowderCheapest per 5 gSimply Supplements · 5 g a serving · £4.65 a month · a pack lasts 3 months15p£15.49View at Simply Supplements (opens in a new tab)
Flourishe Gut SupplementLamberts Healthcare (Nature's Best) · 5 g a serving · £4.95 a month · a pack lasts 3 months17p£16.50View at Lamberts Healthcare (opens in a new tab)
Prebiotic Inulin Fibre PowderMyprotein · 12 g a serving · £5.20 a month · a pack lasts 2 months17p£12.49View at Myprotein (opens in a new tab)
This productHealf · 100 mg a serving · £950.00 a month · a pack lasts under a day£31.67shown above

Ranked purely by price per 5 g. 74 combination products also contain inulin / FOS.

How it compares: vitamin B12 methylcobalamin

All 27, ranked →
WeightWorldVitamin B12 Methylcobalamin TabletsCheapest per 1 mgWeightWorld · 1 mg a serving · 60p a month · a pack lasts 1.2 years2p£8.99View at WeightWorld (opens in a new tab)
Vitamin B12 Tablets 1000mcgBulk · 1 mg a serving · 83p a month · a pack lasts 6 months3p£4.99View at Bulk (opens in a new tab)
Vitamin B12 Tablets 1000mcgBulk · 1 mg a serving · £1.25 a month · a pack lasts 2 months4p£2.49View at Bulk (opens in a new tab)
This productHealf · 2.5 µg a serving · £7600.00 a month · a pack lasts under a day£253.33shown above

Ranked purely by price per 1 mg. 218 combination products also contain vitamin B12.

On the label

Inulin / FOS · Inulin / FOS
100 mg per serving (stated on the label)
Vitamin B12 · Methylcobalamin
2.5 µg per serving (stated on the label)
Pack
30 capsules · 30 servings · 1 capsule(s) a serving
Cost per serving
63p (30 servings in the pack)
More label details
Claimed on the listing
vegan
Sold by
Healf
What the listing says
“30 caps” · “Servings Per Container: 30” · “Serving Size: 1 Capsule” · “Inulin 100mg”
Ingredients

Live Culture Blend (30 Billion CFU) (Vitamin B12 (Methylcobalamin) 2.5ug, Lactobacillus Plantarum (500B CFU/g) 5mg, Lactobacillus Casei (300B CFU/g) 8.334mg, Lactobacillus Paracasei (300B CFU/g) 8.334mg, Bifidobacterium Breve (300B CFU/g) 8.334mg, Bifidobacterium Lactis (300B CFU/g) 8.334mg, Bifidobacterium Bifidum (250B CFU/g) 10mg, Lactobacillus Acidophilus (200B CFU/g) 52.4mg, Bifidobacterium Longum (100B CFU/g) 25mg, Lactobacillus Salivarius (100B CFU/g) 10mg, Lactobacillus Bulgaricus (50B CFU/g) 20mg, Inulin 100mg), Cellulose

From the Healf listing. Check the pack itself if you have an allergy: labels mark allergens in bold.

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One 5 g dose is our comparison unit, not a recommendation.

Price history

No price change since 1 October 2026. Checked on 20 days, most recently 20 October 2026.

Price at every check
£19.00Healf
First recorded
£19.001 Oct
Checked on
20 dayssince 1 Oct
Pack price at each check.
  1. First checked at Healf: £19.00

Questions about this product

How much does DoNotAge Probiotic cost per 5 g?

£31.67 per 5 g, from £19.00 for 30 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

under a day at one 5 g dose. The pack holds 3 g in total.

How much does DoNotAge Probiotic cost per 1 mg?

£253.33 per 1 mg, from £19.00 for 30 capsules at Healf, checked on 20 October 2026.

How long does one pack last?

under a day at one 1 mg dose. The pack holds 75 µg in total.

About DoNotAge

All 16 DoNotAge products, priced per dose

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