Palatability Evaluation of Desloratadine Oral Solution

INTERVENTION: Group B:Group B was assigned to receive the reference product (R) during Period 1 and the test product (T) during Period 2.;Group A:Group A was assigned to receive the test product (T) during Period 1 and the reference product (R) during Period 2.; CONDITION: Allergic Rhinitis Chronic Spontaneous Urticaria PRIMARY OUTCOME: Overall palatability VAS score; SECONDARY OUTCOME: VAS scores for the test formulation’s smell, sweetness, bitterness, and aftertaste; INCLUSION CRITERIA: 1. Healthy males and non‐pregnant/non‐lactating females, aged 18–55 years (inclusive; those turning >55 during the study will not be excluded); 2. Body weight >=50.0 kg for males and >=45.0 kg for females, with BMI 19.0–26.0 kg/m^2 (inclusive); 3. Agreement to use effective contraception from screening to 3 months post‐trial, with no pregnancy or gamete donation plans during this period; 4. Voluntary provision of written informed consent; 5. Ability to communicate well with investigators and comply with the protocol.