Head-to-Head · 2026

Bulk Bulk ZMA vs Bulk Magnesium Bisglycinate

TLL Label Scores are shown only for products whose label assessment has been signed off; others are Under review. Labels and listed prices remain available for research.

Verdict

Bulk Magnesium Bisglycinate has the higher TLL Label Score: 54/100.

Best value per serving: Bulk Magnesium Bisglycinate at £0.50/serving (score 54).

Under review
BulkBulk ZMAMagnesium
54/100TLL Label ScoreDose & label check

TLL Label Score rates what's on the label, not the results you'll get. It compares stated doses with amounts used in published research and checks how transparent the label is. It isn't a health claim or medical advice. Source: https://www.bulk.com/uk/products/magnesium-bisglycinate-tablets/bpb-magb-0000, checked 25 Oct 2026. How we scoreThe TLL Label Score compares the ingredients and amounts declared on the label with the amounts used in published research on those ingredients, and checks how transparent the label is. It rates what's on the label, not the results you'll get. It isn't based on claims made by the brand, doesn't reflect our view of the company, and isn't medical advice. It's for general information only.

Provisional Method B score. Live magnesium is 500 mg per 4 capsules, above the EFSA supplemental UL of 250 mg. The brand 200 mg elemental per 2 tablets was not substituted. TLL does not encourage high intake. The number is not an authorised health claim.

BulkMagnesium BisglycinateMagnesium

★ Winner

Serving1 capsule2 tablets
Retail—£14.99
listed price / serving—£0.50
Magnesium150mg200mg
Zinc10mg—
Vitamin B63.5mg—
Buffered Magnesium Bisglycinate—1000mg

How we score

TLL Label Scores are shown only for products whose label assessment has been signed off; others are Under review. Labels and listed prices remain available for research.

Informational only — not medical advice. Retailer links carry their own disclosures. This never affects scoring.