“…Such fact occurs because it is a long-term treatment, with the presence of adverse effects, considerable cost and, sometimes, unpleasant, which results in lack of adherence. 1 Thus, it is important to develop motivating, theory-based strategies, to strengthen and encourage the taking of antihypertensives. 2 The Theory of Planned Behavior (TPB) assumes that human behavior is predicted by intention (motivation) and influenced by three psychosocial determinants and their respective beliefs: attitude, formed by behavioral beliefs, likely outcomes of behavior and evaluations of these outcomes by individuals; subjective norm, formed by normative beliefs about the opinion of significant people and the motivation to meet these expectations; and perceived behavioral control, inherent to control beliefs about the presence of factors that may facilitate or impede behavior performance.…”