 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST] -234-2345.The precautions of Niacin Oral: Before taking niacin, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially of: very low blood pressure, alcohol use, bleeding problems (such as low platelets), diabetes, gallbladder disease, glaucoma, gout, heart disease (such as recent heart attack, unstable angina), kidney disease, liver disease/increase in liver enzymes, untreated mineral imbalance (low phosphate levels), stomach/intestinal ulcers, underactive thyroid (hypothyroidism). This drug may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis). Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). </s>