While it is tempting to look for quick energy supplements, your symptoms, especially blurry vision combined with fatigue, require a medical evaluation before starting any medication. These symptoms can point to common, highly treatable conditions like diabetes, thyroid imbalances, or vitamin deficiencies (such as Vitamin B12 or D). I highly recommend visiting a doctor for basic blood tests, including blood sugar and thyroid panels. If a specific deficiency is identified, targeted supplements like vitamin D3, B12, or iron can safely restore your energy. Please avoid self-medicating with stimulants, as treating the root cause is the safest and most effective approach.