 <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]  it as soon as you remember. If it is near the time for the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.  Storage Store at room temperature away from light and moisture. Do not freeze liquid forms of this medication. Do not store in the bathroom. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.The uses of Methoxsalen Oral: This medication is used along with controlled ultraviolet light (UVA) to help control severe psoriasis. Methoxsalen works by making the skin more sensitive to UVA light. This combination helps to slow the overgrowth of skin cells.This medication is not recommended for use in children younger than 12 years. How to use methoxsalen oral Read the Patient Information Leaflet if available from your pharmacist before you start taking methoxsalen and each time you get a refill. If you have any questions, ask your doctor or pharmacist. Do not sunbathe for 24 hours before taking methoxsal </s>