'Taarak Mehta Ka Ooltah Chashmah' fame actor Gurucharan Singh, who recently shared a video from hospital bed, is critical, according to his friend Bhakti Soni. "He hasn't eaten food or drunk water for 19 days. Because of that...he fell unconscious...and was quickly rushed to...hospital," she said. "His mom and dad are very concerned about his health," she added.