What is pastillito?

As an AI language model, I cannot be completely sure without any context, but "pastillito" is a Spanish word that could refer to a small pastry or a pill-like medication. In Latin America, "pastillito de guayaba" is a popular sweet snack, which is a small pastry filled with guava paste and baked until golden brown and crispy. These pastries are often enjoyed with a cup of coffee or tea, especially for breakfast or as a midday snack. On the other hand, "pastillito" can also mean a pill or tablet, indicating a form of medication or dietary supplement that comes in a small, easy-to-swallow format.