A flexible tube intended to be inserted into the rectum (may be held in position by an inflatable retention balloon) for administration of a medication solution (e.g. opioids, anti-inflammatory, antibiotics) or infusion of hydration fluid; it may be retained short-term for multiple administrations. It may be supplied with additional disposable devices associated with insertion (e.g. syringe) or medication preparation (e.g., grinder). This is a single-use device.