A camp bolus so poison does not take you
Against being taken by a deleterious drug. So that we suffer nothing toward poison — there being two cures, of healing and of making it that one not suffer, and the second necessary — let someone, having fasted from all food, take twenty leaves of rue, two dried figs, and of walnuts an equal to the dried figs, and he would become unconquered to every drug; let a grain of salt also be present with these. Many bear witness by trial. Others, gathering more exactly, doubled the salt and the rue, and set twenty berries of pepper.
the more complete method, which renders all drugs harmless and which is easy to carry in camp, is this: of fatty dried figs, and likewise of the finest walnuts, and of dry rue, and also of ripe juniper berries, and still of Lemnian seal, equal parts, crushed in a mortar and formed into small balls the size of a Pontic nut, and take one each day.
Greek
2.7 Πρὸς τὸ μὴ δηλητηρίῳ ἁλίσκεσθαι Ἵνα δὲ μηδὲν πρὸς δηλητηρίου πάσχωμεν (δυοῖν γὰρ ὄντων ἀκῶν <τοῦ ἰᾶσθαι καὶ> τοῦ ποιεῖν τὸ μὴ πάσχειν ἀναγκαῖον), νῆστις πάσης ἐπιβολῆς γενόμενος, εἰ λαμβάνοι τις κʹ μὲν φύλλα πηγανίου, ἰσχάδας δὲ δύο καὶ καρύων τῶν ἰσχάδων ἴσον, ἀνάλωτος γένοιτο ἂν παντὶ φαρμάκῳ· προσέστω δὲ τούτοις καὶ χόνδρος ἁλός. Πολλοὶ μὲν οὖν τῇ πείρᾳ μαρτυροῦσιν· οἳ δὲ ἀκριβέστερον συναγαγόντες, ἐδιπλα σίασαν τὸ ἅλας καὶ τὸ πήγανον, ἔθεσαν δὲ πεπέριδος κοκκία κʹ. Τὸ δὲ τελειότερον, ὅπερ ἄπρακτα ποιεῖ πάντα φάρμακα καὶ ὃ εὐχερὲς ἐν στρατοπέδῳ βαστάζεσθαι, τοῦτο· ἰσχάδων λιπαρῶν καρύων τε ὁμοίως τῶν λαμπροτάτων καὶ πηγάνου ξηροῦ, πρὸς δὲ καὶ πεπείρων ἀρκευθίδων, ἔτι τε Λημνίας σφραγίδος ἴσα κόπτειν ἐν ὅλμῳ καὶ ποιεῖν σφαιρία καρύου Ποντικοῦ μέγεθος καὶ λαμβάνειν ἑκάστης ἡμέρας ἕν.