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Rick Simpson Oil, a highly concentrated, full-spectrum cannabis oil originally developed as a medicinal treatment for serious illness.
Rick Simpson Oil, commonly known as RSO, is a full-spectrum, highly concentrated cannabis oil named after Rick Simpson, a Canadian engineer who popularized its use after claiming it helped treat his skin cancer in the early 2000s. RSO is typically very thick and dark, with a tar-like consistency.
Production and Characteristics
Traditional RSO is made by soaking cannabis in a solvent (usually ethanol or isopropanol), which extracts the full range of cannabinoids, terpenes, and plant compounds. The solvent is then evaporated off, leaving a concentrated oil. The result is a potent, full-spectrum product that can contain 60% to 90% THC. Unlike more refined concentrates, RSO retains chlorophyll, waxes, and other plant materials, contributing to its dark color and strong, earthy taste.
How RSO Is Used
RSO is most commonly consumed orally, either placed directly on food, swallowed in a capsule, or applied under the tongue. Some patients also use it topically. Due to its extreme potency, the recommended starting dose is a very small amount, roughly the size of half a grain of rice. RSO is primarily associated with the medical cannabis community, where patients use it for serious conditions. While anecdotal reports are numerous, clinical evidence for RSO specifically is limited. Always consult a healthcare provider for medical decisions.