Our Verdict
Cheapest option, but you're flying blind. BulkSupplements is the lowest cost per serving in our test, but they don't disclose IgG content at all — which makes it impossible to evaluate potency. They claim third-party testing without naming the lab or publishing results. The format (raw powder, no flavoring) appeals to people who want minimum-cost ingredients, but for colostrum specifically, IgG content varies dramatically by source and processing, so 'cheap colostrum' could mean almost anything.
Evident Ratings
BulkSupplements Colostrum Powder
Sub-scores are category scores on a 1–5 scale, shown out of 10.
About BulkSupplements
BulkSupplements is an Amazon-native brand that sells single-ingredient supplements in bulk. Strategy: minimize marketing and packaging cost, compete on price.
See how BulkSupplements stacks up against every colostrum we tested
Our full colostrum comparison ranks every brand across the same scoring dimensions you saw above — formulation, testing, trust, value, and sourcing.
See Best Colostrum →Other top colostrum we tested
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