Sona Stress Remedy ~ 30 day course (90). Sona Stress Remedy combines the benefits of Time Release Sona B Complex Vitamins with 500mg Sona Evening Primrose Oil.. B vitamins such as Biotin, Niacin, B12 and B6 are important for energy, the reduction of tiredness & fatigue, normal psychological functions and the function of the nervous system.. Thiamin contributes to the normal function of the heart.. Pantothenic Acid is important for mental performance.. Vitamin E is an essential vitamin important for the protection of cells from oxidative stress.