 <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]  or for longer than prescribed. Your condition will not improve any faster, and your risk of side effects will increase. Antacids may decrease the absorption and the effectiveness of this product. If you are also taking antacids, take this product at least 1 hour before antacids. For the best effect, take this medication at evenly spaced times. To help you remember, take it at the same times each day. Caffeine can increase the side effects of this medication. Avoid drinking large amounts of beverages containing caffeine (coffee, tea, colas), eating large amounts of chocolate, or taking nonprescription products that contain caffeine. Tell your doctor if your condition does not improve in a few days or if you develop signs of a urinary tract infection (such as burning/painful/frequent urination).The side effects of Methenamin-Hyosc-M.Blue-Salicylt-Naphos Oral: Nausea, vomiting, dry mouth, dizziness, drowsiness, blurred vision, or constipation may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. To relieve dry mouth, suck on (sugarless) hard candy or ice chips, chew (sugar </s>