Professional guide for Guaifenesin and Codeine. Includes: pharmacology, pharmacokinetics, contraindications, interactions, adverse reactions and more. What about codeine with guaifenesin? Guaifenesin is classified as an expectorant, meaning it can loosen congestion in the throat and chest. It’s given to people to reduce congestion in their chest resulting from allergies, infections or colds. Codeine is an opiate used to treat pain, as a cough medicine, and for diarrhea. It is typically used to treat mild to moderate degrees of pain. Greater benefit may occur when combined with paracetamol (acetaminophen) or a nonsteroidal anti-inflammatory drug (NSAID) such as aspirin or ibuprofen. Evidence does not support its use for acute cough. Codeine is a narcotic (opioid) drug used to relieve mild to moderately severe pain. Since codeine is a narcotic that is addictive and can cause serious side effects such as respiratory or cardiac arrest, and shock, which can lead to death. Dosages of codeine are tailored to each patient's needs. Before looking specifically at codeine linctus and answering “does codeine linctus get you high,” what is codeine? Codeine is an opioid pain reliever narcotic that’s a controlled substance in the U.S. The Downside. Ergot outbreaks are rare so eating a Reuben will most likely not turn you into Hunter S. Thompson at the Kentucky Derby. In the off chance that you're a crazed miller who really, really wants to get high on tainted grain, be forewarned that an ergot infection is roughly one part psychosis, two parts gangrenous sores. Usual Adult Dose for Pain. Initial dose: Acetaminophen (300 to 600 mg) and codeine (15 to 60 mg) orally every 4 hours as needed for pain-Titrate to a dose that provides adequate analgesia and minimizes adverse reactions Codeine is an opioid pain medication, sometimes called a narcotic. Acetaminophen is a less potent pain reliever that increases the effects of codeine. DESCRIPTION. FIORINAL with CODEINE (butalbital, aspirin, caffeine, and codeine phosphate, USP) is supplied in capsule form for oral administration. How to use Acetaminophen-Codeine. See also Warning section. Read the Medication Guide provided by your pharmacist before you start taking acetaminophen/codeine and each time you get a refill.