Aloe barbadensis Miller, now classified as Aloe vera, is a succulent perennial in the Asphodelaceae family, native to the Arabian Peninsula and widely cultivated in warm, dry climates. It thrives in sunny locations with well-drained soil, storing water in its thick, fleshy leaves. These leaves yield two distinct medicinal materials: a clear inner gel and a yellow latex beneath the outer rind. The gel has a slippery, mucilaginous texture, faint vegetal aroma, and mild taste, while the latex is intensely bitter. Aloe vera gel is valued for moisturizing, soothing, anti-inflammatory, and wound-healing properties; the latex has historically been used as a stimulant laxative. Its notable gel constituent is acemannan, a complex carbohydrate composed largely of linked mannose sugars. In cell and animal studies, acemannan stimulated fibroblasts (the cells that build connective tissue) and increased collagen and growth-factor production, offering a biological explanation for its potential to support tissue repair. Laboratory studies using human colorectal tissue also found that aloe gel reduced production of prostaglandin E2, a signaling substance that's involved in inflammation. These experimental findings also help explain its traditional use for irritated skin and digestive discomfort, although they do not establish identical effects in people. Topical preparations have been studied for burns, wound healing, and psoriasis, while oral gel has been investigated for ulcerative colitis, an inflammatory condition affecting the colon. A double-blind, randomized, placebo-controlled trial involving 44 adults with mildly to moderately active ulcerative colitis found a clinical response in 47% of participants receiving oral aloe gel versus 14% receiving placebo after four weeks PMID: 15043514. These findings apply to the gel preparation studied. The latex contains aloin and related compounds that stimulate bowel activity but can cause cramping and diarrhea, making it distinct from purified inner-leaf gel. Despite the name “Barbados aloe,” botanical research traces this plant’s origins to Arabia rather than the Caribbean.