Wyeth is an American pharmaceutical engineering company, and after Pfizer acquired it, it sold Wyeth's milk powder business to Nestlé for $11.85 billion, and Wyeth has now withdrawn from the US market. Scientific nutritional formula has always been Wyeth's strength: the world's first infant formula specially developed for non-breastfed babies came from Wyeth. Six of the ten revolutionary innovations in infant formula were initiated by Wyeth for the first time. As early as 1961, it launched the first whey protein-to-casein formula with a 60:40 ratio, named it S-26, which changed the casein-based formula design concept of the time to make it closer to the composition of breast milk, and most formulas on the market today follow this design.
 
In the Chinese market, Wyeth Gold Aierfu is a lactose-free formula, suitable for 0-12 months lactose intolerant babies, imported from Ireland, 400g canned price of 136 yuan. Gold-packed Aierjia is a formula milk powder for premature infants after discharge, imported from Ireland, and the price of 400g cans is about 190 yuan. The gold set is designed for picky eaters over 1 year old, produced in Singapore, and the price of 900g cans is 228 yuan. Wyeth's overseas version of special formula milk powder has a more complete range, and there are also soybean milk powder, anti-vomiting milk powder and other series, but Wyeth currently does not have amino acid formula milk powder.