This is an Open clinical trial to study the safety and efficacy of Chandrakanthi Choornam in 40 patients with Oligospermia. Chandrakanthi choornam is a formulation consisting of 25 ingredients. They are Curculigo orchioides -rhizome, Madhuca longifolia - flower, Cinnamomum verum -bark,Cinnamomum tamala-Leaf, Syzygium aromaticum - flower bud,Coscinium fenestratum-stem bark,Mesua ferrea-flower, Maerua arenaria-tuber, Adhatoda vasica- seed, Moringa oleifera-seed, Lawsonia inermis-seed, Vitis vinifera- fruit, Bombax ceiba- gum, Bambusa aurundinaceae-salt,Phoenix dactilifera- fruit,Ilicium verum- flower, Mucuna prurita-seed, Cyperus rotundus- rhizome, Glycyrrhiza glabra-root, Tribulus terrestris-fruit, Cuminum cyminum-seed,Costus speciosus-root,Myrsitica fragrans-seed, Alternanthera sessilis-seed and asphaltum-mineral. Treatment duration is three months.Study is conducted in India (Chennai). Primary outcome measure is to see the changes in sperm count, motility and morphology. Secondary Outcome measure is to see the impact on the harmone level.