 <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]  are taking? Enter your medication into the WebMD interaction checker Check InteractionThe overdose of Lanthanum Oral: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.  Notes Your doctor may tell you to follow a special diet to help lower your blood phosphate levels. Follow the diet closely. Do not share this medication with others. Lab and/or medical tests (such as blood phosphate and calcium levels) should be done while you are taking this medication. Keep all medical and lab appointments. Consult your doctor for more details.  Missed Dose If you miss a dose, skip the missed dose unless you have just eaten. If it is near the time of 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 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 </s>