 <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] ase levels), possibly causing false test results. Make sure lab personnel and all your doctors know you use this drug. Does Guaifenesin AC interact with other drugs you are taking? Enter your medication into the WebMD interaction checker Check InteractionThe overdose of Guaifenesin AC 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. Symptoms of overdose may include: fast/slow/irregular heartbeat, slow/shallow breathing, cold/clammy skin, coma.  Notes Do not share this medication with others. Sharing it is against the law. This medication has been prescribed for your current condition only. Do not use it later for another condition unless told to do so by your doctor. A different medication may be necessary in that case.  Missed Dose If you are prescribed this medication on a regular schedule and miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular </s>