What supplements really cost, per dose.
Tubs, servings and labels are all different, so shelf prices tell you very little. We work out the price of the same dose of every product, form by form, and rank them. No one can pay to be higher.
99 products · Bulk, Myprotein, Holland & Barrett, Healthspan · prices checked 17 September 2026
Compare prices
Ashwagandha
from£0.173per 600 mg8 products
Creatine
from£0.0999per 5 g12 products
L-Theanine
from£0.233per 200 mg2 products
Magnesium
Bisglycinate (glycinate) from£0.0749per 100 mg magnesium- Citrate£0.102
- Oxide£0.0500
- Blends and other forms£0.0492
19 products
Omega-3
Fish oil from£0.112per 1 g EPA + DHA- Krill oil£2.23
- Algae oil (vegan)£0.976
18 products
Vitamin B12
Methylcobalamin from£0.0277per 1 mg- Cyanocobalamin£0.0696
9 products
Vitamin C
Standard (ascorbic acid and ascorbates) from£0.0375per 1 g- Liposomal£0.660
15 products
Vitamin D3
from£0.0127per 1,000 IU16 products
Vitamin K2
from£0.117per 100 µg5 products
Zinc
Citrate from£0.0518per 15 mg zinc- Gluconate£0.0485
- Other forms£0.0361
14 products