222 In the index

Transfer factor TF

An extract from colostrum or egg yolk marketed as an immune-system booster in alternative-medicine products. Solid human research supporting real immune benefits is weak, coming mostly from small, industry-linked studies, and it's generally considered unproven by mainstream medicine.

Also known as Dialyzable leukocyte extract

Effects Immune

Routes Oral

Legal status Dietary supplement

WADA Not listed

Reported dosing

Limited data

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose 500 mg/day

Reported range 200-1200 mg/day

Route Oral

Frequency Once or twice daily

Duration Ongoing (supplement use)

An extract from colostrum or egg yolk marketed as an immune-system booster in alternative-medicine products; solid human research supporting meaningful immune benefit is weak, coming mostly from small, industry-linked studies.

Where this comes from Small industry-sponsored studies; supplement-industry dosing

Human data for this compound is limited. Read the figures above as a record of reported use rather than established dosing.