Abstract: Background and Objective: Plant based medicines are the integral part of alternative medicines including traditional Indian and Chinese medicines. Especially the Siddha and Ayurveda medicines of Indian origin have documented about the use of various herbs in treating various ailments of both human and animals. Materials and Methods: Although these medicinal prescriptions have been adopted by traditional healers and practitioners of today, these medicines and formulations are viewed under scientific validation for their recognition and acceptance. Many pharmacological researches are now underway for the justification and use of these herbal formulations. The phytochemical investigations have been undertaken to enumerate the components of these herbs used in Siddha system of medicine. Results: The present study focuses in identifying the underlying components using gas chromatography-mass spectrometry (GC-MS) which could contribute the healing effects of four herbal parts namely, the rhizome of Zingiber officinale (Z. officinale) and Curcuma longa, the bark of Terminalia arjuna and the seed of Piper longum in treating the stomach disorders of vet animals. Conclusion: The medicinal uses cited in the literatures are correlated with the components identified by GC-MS as evidence to the herbo-cure of stomach disorders in vet animals.