About
Whey powder is the spray-dried or roller-dried form of whey, the liquid co-product remaining after milk is curdled and strained during cheese or casein manufacture. It is widely used in processed foods, infant formula, baked goods, and sports nutrition as a source of high-quality protein, lactose, and minerals, and provides functional properties such as emulsification, foaming, and water-binding.
Safety summary
Whey powder is affirmed as GRAS by the FDA and carries no IARC classification or established ADI, reflecting a broad safety consensus built on centuries of dairy consumption. It contains major milk allergens (beta-lactoglobulin, alpha-lactalbumin) that can trigger immune reactions in individuals with cow's milk protein allergy. Sweet whey powder retains significant lactose (~70% of dry weight) which may cause gastrointestinal distress in lactose-intolerant individuals, and high-dose protein supplementation may pose a renal burden in those with pre-existing kidney disease.
Regulatory landscape
| Jurisdiction | Status | Note |
|---|---|---|
| EFSA (European Food Safety Authority) (European Union) | Approved | Whey powder is a conventional dairy food ingredient approved under EU dairy product standards. Whey basic protein isolate was assessed as a novel food under Regulation (EU) 2015/2283; the EFSA NDA Panel (2018) concluded it is safe under proposed uses in infant formula, meal replacement beverages, foods for special medical purposes, and food supplements. No E-number assigned as whey powder is classified as a food ingredient, not a food additive.source |
| FSSAI (Food Safety and Standards Authority of India) (India) | Approved | Whey and whey powder are regulated as dairy products under FSS (Food Products Standards and Food Additives) Regulations, 2011, Chapter 2.1 (Dairy Products and Analogues). Whey is defined as the fluid separated from curd after coagulation during cheese or casein manufacture; whey powder is explicitly listed with seed lactose permitted in the manufacture of pre-crystallized Whey Powder.source |
| FDA (Food and Drug Administration) (United States) | Approved | Whey is affirmed GRAS under 21 CFR §184.1979 and whey protein concentrate under 21 CFR §184.1979c; both are approved for use in food generally with no limitation other than current good manufacturing practice (cGMP). No maximum use level is prescribed.source |
Who should approach with care
Research citations
- 1FDA. 21 CFR §184.1979 – Whey; Direct Food Substances Affirmed as Generally Recognized as Safe. ecfr.gov
- 2PubMed. Safety of whey basic protein isolate for extended uses in foods for special medical purposes and food supplements for infants pursuant to Regulation (EU) 2015/2283, 2019. pubmed.ncbi.nlm.nih.gov
- 3EFSA. Safety of Whey basic protein isolates as a novel food pursuant to Regulation (EU) 2015/2283, 2018. efsa.europa.eu
- 4FDA. Agency Response Letter GRAS Notice No. GRN 000633, 2016. fda.gov
- 5FSSAI. FSS (Food Products Standards and Food Additives) Regulations, 2011 – Chapter 2.1: Dairy Products and Analogues, 2011. fssai.gov.in
