Background: A biennial or perennial plant of the Apiaceae family, Eryngium caeruleum M. Bieb. is traditionally used in medicine as an antitoxic, diuretic, digestive, anti-inflammatory and analgesic drug. This plant is widely distributed in temperate regions around the world. Young leaves of the plant are used in cooking as aromatic cooked vegetables in various local products in Iran. Purpose: The current review aimed to highlight complete and updated information about the Eryngium caeruleum species, regarding botanical, ethnopharmacological, phytochemical data, pharmacological mechanisms as well as some nutritional properties. All this scientific evidence supports the use of this species in complementary medicine, thus opening new therapeutic perspectives for the treatment of some diseases. Methods: The information provided in this updated review is collected from several scientific databases such as PubMed/Medline, ScienceDirect, Mendeley, Scopus, Web of Science and Google Scholar. Ethnopharmacology books and various professional websites were also researched. Results: The phytochemical composition of the aerial parts and roots of E. caeruleum is represented by the components of essential oil (EO), phenolic compounds, saponins, protein, amino acids, fiber, carbohydrates, and mineral elements. The antioxidant, antimicrobial, antidiabetic, antihypoxic, and anti-inflammatory properties of E. caeruleum have been confirmed by pharmacological experiments with extracts using in vitro and in vivo methods. The syrup E. caeruleum relieved dysmenorrhea as effectively as Ibuprofen in the blinded, randomized, placebo-controlled clinical study. Conclusion: Current evidence from experimental pharmacological studies has shown that the different bioactive compounds present in the species E. caeruleum have multiple beneficial effects on human health, being potentially active in the treatment of many diseases. Thus, the traditional uses of this species are supported based on evidence. In future, translational and human clinical studies are necessary to establish effective therapeutic doses in humans.

Arsenic contamination in drinking water poses a critical environmental and public health threat, particularly in rural areas such as Huanuara, Peru, where concentrations exceed the 10 µg·L⁻¹ limit established by the World Health Organization (WHO). This study explores the potential use of iron-rich metalworking residues as an alternative adsorbent. Characterization using Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM–EDS), X-ray Diffraction (XRD), and Brunauer–Emmett–Teller (BET) analysis revealed a specific surface area of 0.7469 m²·g⁻¹, with magnetite (Fe₃O₄) and metallic iron (Fe⁰) as the predominant phases. Arsenic concentrations were quantified by Inductively Coupled Plasma Mass Spectrometry (ICP–MS). A batch reactor system treated 16 L per cycle under conditions of 293–298 K and 95.46 kPa. Adsorption parameters were optimized using a Central Composite Rotatable Design (CCRD), with adsorbent mass (31.72–88.28 g) and contact time (4.17–9.83 h) as variables. Under optimal conditions (80 g, 9 h), 99.07% arsenic removal was achieved, reducing concentrations from 530.03 µg·L⁻¹ to ≤4.91 µg·L⁻¹. The quadratic regression model (R² = 0.90, p = 0.0006) was validated by ANOVA (p < 0.05; F = 22.02). These results demonstrate that metalworking residues offer a scalable and sustainable solution for arsenic remediation, supporting circular economy principles and decentralized water treatment.