Description Avisol solution - for treating infectious cold and coccidiosis in poultry and pigeons. Appropriately diluted, it is easily absorbed by all birds in regular drinking water and can be used for extended periods without harmful effects. The composition contains sulfathiazole 20% m / m. It is a 35% m / m solution of a neutral, soluble sulfathisole derivative. Usage: 1 ml in 1 liter display bottles of 100 ml