 <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] such as intestinal/stomach problems, poor nutrition, cancer, HIV infection, pregnancy, old age, alcoholism). It may also occur in people who follow a strict vegetarian (vegan) diet. How to use VITAMIN B-12 If you are taking the over-the-counter product to self-treat, follow all directions on the product package before taking this medication. If you have any questions, consult your pharmacist. If your doctor has directed you to take this medication, take as directed by your doctor. Take this medication by mouth with or without food as directed by your doctor or the product package, usually once daily. Use this product regularly to get the most benefit from it. To help you remember, take it at the same time each day. The dosage is based on your medical condition, response to treatment, and laboratory tests. Consult your doctor or pharmacist for more details. There are many brands and forms of cyanocobalamin (vitamin B12) available. Read the dosing instructions carefully for each product because the amount of cyanocobalamin (vitamin B12) may be different between products. If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. </s>