sonnifero angolul

sleeping pill [sleeping pills]▼(a pill having a soporific effect)
noun
[UK: ˈsliːp.ɪŋ pɪl] [US: sˈliːp.ɪŋ ˈpɪl]

soporific [soporifics]▼(sleep inducing agent)
noun
[UK: ˌsɒ.pə.ˈrɪ.fɪk] [US: ˌsɒ.pə.ˈrɪ.fɪk]