According to classical Unani literature Dammul Akhawain is a gum of tree which is obtained from Socotra Island. It is also known as Aida, Sheyan, used for wound healing properties. It is also said that Dammul Akhawain is red coloured extract (osara) which looks like gum, It is also called as qatiruddam ,damuttaneen and damussuaban in Arabic, khun seya-wa –shan in Persian, hiradukhi in Hindi. Meer Bahuddin described that Dammul Akhawain is an extract of Abukhalsa (Alkana tinctoria). It is a gum of Baqam (Caesalpinia sappan) tree which is called patang in Hindi. Some Tabibs say it to be extract of Qesaul hemar. It is red coloured dried extract. Some Unani expert also said that it is a gum that resembles the gum of Hayyul aalam tree. In others view, Dammul Akhawain obtained from Socotra Island is an extract of red color herb which is named as Fahdam. As it is evident from literature that Dammul Akhawain is obtained from various plant species, this survey of the literature clearly shows that there are chances of different samples of this drug sold in the market.