Potential side effects of Purisaki Berberine Patches mainly involve skin reactions such as mild redness, itching, or sensitivity at application sites. Rotating areas daily minimizes these. Systemic effects like minor digestive changes are rarer due to transdermal delivery compared to oral forms. Berberine may influence blood sugar, so those on medications should monitor closely. Most users tolerate the patches well with proper use. Discontinue if irritation persists and seek medical advice. Pregnant individuals or those with allergies to botanicals should exercise caution