Brand profile
Life Extension is a privately owned US vitamin and supplement company founded in 1980 and headquartered in Fort Lauderdale, Florida, with manufacturing in New Jersey. It sells a broad catalog of science-focused supplements, with an emphasis on healthy aging, and is known for single-ingredient formulas such as Neuro-Mag and for publishing a health magazine and blood-test services.
Average score
Across 1 product
Testing & quality
States that it is GMP registered with NSF International, uses third-party analysis, and provides a finished-product certificate of analysis on request. Most products carry no product-level certification seal.
Life Extension
A best-selling Magtein supplement at the full 2 g trial dose. Sleep evidence is early and industry-funded, and at about $1 a day it costs far more than other magnesium.
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