Background In the present scenario, the markets are flooded with chemical-based mosquito repellent products that are proven to be toxic to the human life especially to the children and quite expensive in term of cost. This present investigation was attempted to evaluate the complete pharmacognostical characteristics of Elettaria cardamomum (Linn.) seed and to formulate eco-friendly and cost-effective herbal mosquito repellents of the seed powder by using a natural binder. Results The results of microscopic study of seed confirmed the presence of perisperm, embryo, endosperm and testa (Figs. 4, 5 and 6). The extractive values, moisture contents and ash values were also analysed and found to be alcoholic extract, 4.88% w/w; water extract, 40% w/w; moisture content, 8.6%; total ash, 5% w/w; acid insoluble ash, 1.5% w/w; and water soluble ash, 3.5% w/w (summarized in Tables 1, 2 and 3). From the mosquito repellency test (Table 6), the combination of cardamom seed cake was done with cardamom powder 3/2 + 1/4 spoons, wood powder 3 spoons and chilli powder 1/4 spoon which showed low residual percentage of 15.05%, no irritation and an average burning time of 65 min. The formulated herbal-based mosquito repellents were found to be more effective without any side effects and found less cost too. Conclusion All the ingredients used in the formulation were herbal based and has no side effect on human health. The cost of the cake was Rs. 11.332/- and it can be considered as good mosquito repellent cakes because of its consistent burning ability with no irritating smoke and low residual percentage and high mosquito repellent ability. By utilizing this concept, the researchers can develop herbal, eco-friendly and cost-effective mosquito repellents in future.

Introduction: Cold and cough is the common disease condition which effects patient of every age. The treatment approach of medicinal herbs has been recognized for many decades and even longer for the treatment and prevention of cold and cough. The aim of the study was to evaluate the safety and efficacy of polyherbal tablet. Polyherbal tablet containing herbs like Neem (Azadirachta indica), Tulsi (Ocimum tenuiflorum), Ginger (Zingiber officinale), Turmeric (Curcuma longa) is used for curing cold and cough. This tablet formulation reduces the healing time for sore throat and boost up the immunity. Materials and methods: The preparation of the extract and manufacturing of the polyherbal tablet is by processing technique with extract based herbal formulation and evaluation for analytical standardization including qualitative and quantitative determination were carried out. The tablets were weighed individually, the hardness and thickness were measured, friability of the tablet was measured, and the disintegration time was observed. The colour was observed to be brownish yellow and no odour. Discussion: When combining the multiple herbs in a particular ratio, it will give a better therapeutic effect and reduce the toxicity. This review mainly focusses on importance of the polyherbalism and its clinical significance. Keywords: Polyherbal tablets, formulation, evaluation, hardness, disintegration time.