High caffeine content. Not intended for children and individuals sensitive to caffeine. Do not use with alcohol. You may experience flushing (hot feeling, skin redness) that lasts a few minutes. This is caused by increased blood flow near the skin. Do not take if you are pregnant or breastfeeding. Caffeine may cause anxiety, rapid heart rate, palpitations, insomnia, restlessness, nervousness, tremor and headache. Consult a health care professional prior to use if you have overactive bladder syndrome, taking antidepressant drugs or any antipsychotic medication or are of childbearing age. Avoid taking with health products or foods that increase blood pressure. This product is not intended as a substitute for sleep. Do not use if you are taking medication used to treat Parkinson’s disease or if you have tardive dyskinesia. Stop use if hypersensitivity/allergy occurs.