[1] Brecher was born in Prossnitz, Moravia, and attended yeshivot in Eibenschütz and Nikolsburg.

Brecher received a graduate degree in surgery and obstetrics at the University of Pest in 1824, and obtained a doctorate in medicine at the University of Erlangen in 1849, with the thesis Das Transcendentale, Magie und Magische Heilarten im Talmud (Vienna, 1850).

Brecher's fame in Jewish literature rests principally on this work and upon his lucid commentary on the Kuzari of Judah ha-Levi, which appeared with the text in four parts (Prague, 1838–1840).

[2] In addition to many contributions to scientific and literary periodicals and collections, and some important "Gutachten" (expert opinions) on social and religious questions submitted to him by imperial and local government officials, Brecher is the author of a monograph on circumcision, Die Beschneidung der Israeliten (Vienna, 1845),[3] with an introduction by Hirsch Fassel, and an appendix on Circumcision Among the Semitic Nations, by Moritz Steinschneider.

Brecher also wrote Die Unsterblichkeitslehre des Israelitischen Volkes (Vienna, 1857), of which a French translation appeared in the same year by Isidore Cahen [fr]; and Concordantiæ nominum propriorum, a concordance of Biblical proper names, part of which was revised and published after his death by his son Adolph Brecher.