Answer:
Tropon, a food supplement
Explanation:
Henry Clemens Van de Velde was a painter born on April 3, 1863, in Antwerp, Belgium. In 1898 he designed the poster design for Tropon, a food supplement. which he then later created labeling and advertisements in 1899. The poster was for a product developed by Tropon Werke which was designed to improve public health, as a protein that was created using egg white.