Numbers of peoples are habitual in taking raw garlic (Allium sativum) alone or with their diet in a very unusual ways, which may or may not be beneficial to them. Considering the merits and demerits of raw garlic with respect to dose and time period, this study was undertaken to investigate the influence of garlic on Chemical and Haematological analysis of blood, Changes in the weight of Gonads and their bio – chemistry and Behavioural changes, with respect to irritation, salivation, feeding and sleeping. Garlic can be used when the individuals cannot tolerate the chemical drugs, but it cannot be used as a main therapeutic agent. So, the proper use of garlic, i.e use of different preparations available, dose, duration and interaction with generic drugs should be optimized. In the last but not least, it can be easily said that, “the old adage “an apple a day keeps the doctor away” should be recited “a clove a day keeps the diseases away”.