For a conscious patient with suspected hypoglycemia, the immediate treatment is to give oral glucose.

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When a conscious patient with suspected hypoglycemia can swallow, the fastest way to correct the low blood sugar is to introduce a fast-acting oral carbohydrate. Glucose taken by mouth is rapidly absorbed in the gastrointestinal tract, causing blood glucose to rise within minutes and resolving symptoms promptly. This approach is preferred because it is quick, simple, and avoids invasive procedures while the airway is protected and the patient can cooperate. After giving oral glucose, recheck the blood glucose soon after (to confirm the rise) and repeat if needed.

If the patient cannot swallow, or is not fully awake and risk of choking exists, you would switch to intravenous glucose or administer glucagon to restore glucose quickly. Other options listed, such as intravenous fluids without glucose, naloxone, or activated charcoal, do not directly and promptly address hypoglycemia in a conscious patient.