The present invention relates to a bioenhancing/bioavailability-facilitating composition comprising: an effective amount of an extract and/or at least one bioactive fraction from Cuminum cyminum; one or more additive selected from drugs, nutrients, vitamins, nutraceuticals, herbal drugs/products, micro nutrients, antioxidants along with pharmaceutically acceptable additives/excipient, and optionally, an effective amount of piperine or extract/fraction of piper nigrum or piper longum; and a process for the preparation of such extracts and active fractions from plant Cuminum cyminum.