 <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]  This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some products that may interact with this drug include: burosumab, phosphate binders. Check the labels on all your prescription and nonprescription/herbal products (such as antacids, laxatives, vitamins) because they may contain calcium, magnesium, phosphate, or vitamin D. Ask your pharmacist about using those products safely. Vitamin D is very similar to calcitriol. Do not use medications containing calcitriol while using vitamin D. This vitamin may interfere with certain lab tests (such as cholesterol tests), possibly causing false test results. Make sure lab personnel and all your doctors know you use this vitamin. Does Optimal D3 interact with other drugs you are taking? Enter your medication into the WebMD interaction checker Check InteractionThe overdose of Optimal D3 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 </s>