Investigation the effect of a herbal composition based on blackseed on patients with primary hypothyroidism: A randomized controlled trial.

Hypothyroidism is characterized by insufficient production of thyroxine by the thyroid gland. Levothyroxine may not fully alleviate patients' symptoms. This study aimed to assess the impact of a herbal product on weight, body mass index (BMI), thyroid hormones, lipid profile, fasting blood sugar (FBS), depression, and quality-of-life scores in patients.