4Life's first vegan source of transfer factor. Bioactive immune-supporting peptides extracted from Brassica napus seeds — plant-based, rapid-response, and the breakthrough at the heart of 4Life Transfer Factor Max.
In 1949, Dr. H. Sherwood Lawrence isolated transfer factors inside human white blood cells. Tiny messenger molecules. They passed immune memory between cells with a kind of grace nobody had seen before.
For decades after, the field grew around two remarkable sources: cow colostrum and chicken egg yolks. Both turned out to be incredible carriers of transfer factors, and 4Life built an entire industry on getting them right.
Then 4Life Research asked a new question — what about plants? — and went looking inside Brassica napus seeds. They found bioactive immune-supporting peptides that behaved in remarkable ways.
That blend became PhytoFactor™ — 4Life's first vegan source of transfer factor, and the foundation of one of the biggest innovations in immune science research in the last 70 years: Transfer Factor Max.
PhytoFactor™ is composed of bioactive immune-supporting proteins and peptides extracted from the seeds of Brassica napus — the rapeseed plant. It's 4Life's first vegan source of transfer factor, and the only plant-based one in the world today.
Where animal-based transfer factors educate the immune system, PhytoFactor™ does something different: it has a more direct effect on invading organisms and activates the immune cells' response — the rapid-response engine in Transfer Factor Max.^
The same plant family as broccoli, mustard, and rapeseed — chosen specifically for the immune-active peptides in its seeds.
Plant-based and 100% vegan. A breakthrough new option for anyone seeking transfer factor support without animal sources.
In preclinical studies, PhytoFactor™ has a more direct effect on invading organisms while also activating immune cells.^
Non-GMO. Manufactured to the same standards 4Life has applied to its transfer factor products since 1998.
Brassica napus · in bloom
The technical fingerprint of PhytoFactor™ — how much, how big, where it acts.
Each daily serving (4 capsules) delivers 300 mg of PhytoFactor™ alongside 600 mg of Tri-Factor Formula.
Bioactive immune-supporting proteins and peptides are extracted directly from Brassica napus seeds.
4Life's first vegan source of transfer factor — and the only plant-based transfer factor available today.
In preclinical studies, PhytoFactor™ has a more direct effect on invading organisms — and activates the immune cells' response.^
Transfer Factor Max — which contains PhytoFactor™ — is clinically proven to activate the immune system within two hours.*
Bolsters NK cells, B cells, T cells, neutrophils, and macrophages — over 90% immune cell coverage.*^
Animal-based transfer factors deliver immune information that helps cells recognize threats. PhytoFactor™ adds something new: a more direct effect on invading organisms and activation of the immune cells' response.^
PhytoFactor™ works alongside UltraFactor XF®, NanoFactor®, and OvoFactor® inside Max — together delivering a total of 900 mg of 4Life Transfer Factor per serving.
For decades, transfer factor formulas drew exclusively from animal sources. PhytoFactor™ adds the first new source the field has seen — and the first vegan one.
PhytoFactor™ is the centerpiece of Max, and pairs naturally with the rest of the 4Life Transfer Factor line for daily, foundational support.
The product, the peptides, and the clinical research behind 4Life Transfer Factor Max — including a dedicated chapter on PhytoFactor™.
How 4Life Research uncovered immune-supporting peptides in Brassica napus seeds.
Three studies covering 2-hour activation, stem cell mobilization, and neutrophil response.
900 mg of 4Life Transfer Factor, IP-6, the Super-Mushroom Blend, and supporting nutrients.
Four capsules a day deliver 300 mg of plant-based PhytoFactor™ alongside 600 mg of Tri-Factor Formula — for a total of 900 mg of 4Life Transfer Factor in every serving.