Precision Engineered by Holland & Barrett
Is Precision Engineered by Holland & Barrett third-party tested?
Yes — as of 2026-09-21, Precision Engineered by Holland & Barrett holds 33 third-party certifications across 1 independent testing program: Informed Sport / Informed Choice. Every certification below links to the certifying body's official listing so you can verify it at the source.
Registries checked (as of 2026-09-21): Informed (Products are tested for banned substances by a WADA-accredited laboratory; the Sport program targets competitive athletes and the Choice program targets general consumers.) · NSF · USP · Labdoor · BSCG
Certified categories: amino acids, creatine, electrolytes, magnesium, pre-workout, protein
Last verified: 2026-09-21
SupplementSentry found certifications on 33 of Precision Engineered by Holland & Barrett's products in our index.
Certification breakdown
- Informed Sport / Informed Choice — 33 products
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Amino 1000
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BCAA
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CLA 1200mg
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Choline & Inositol
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Clear Protein
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Creatine Gummies
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Creatine Monohydrate 700mg
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Effervescent Hydration & Energy
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Electrolyte
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Essential Amino Acids
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High Protein Shake
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L-Arginine 1000mg
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L-Arginine 500mg
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L-Arginine L-Ornithine L-Lysine
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L-Carnitine 500mg
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L-Glutamine 500mg
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L-Lysine 1000mg
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L-Taurine 500mg
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L-Tyrosine 500mg
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Lean Protein
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Magnesium & Zinc
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N-Acetyl Cysteine 600mg
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Performance BCAA
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Performance Pre Workout
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Plant Protein
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Plant Protein Bar
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Protein Bar
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Protein Flapjack
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Pump Zero Pre-Workout
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Pure Creatine Monohydrate
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Tan Tablets
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Whey Protein
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ZMA
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