Yes, Lortab is an opioid. It contains hydrocodone, a semi-synthetic opioid pain reliever, combined with acetaminophen (the active ingredient in Tylenol). Lortab is classified as a Schedule II controlled substance under federal law, meaning it has a high potential for misuse and dependence.
What’s in Lortab
Lortab is a combination medication. Each tablet contains hydrocodone, the opioid component, paired with acetaminophen, a non-opioid pain reliever. One common formulation, Lortab 7.5/500, contains 7.5 mg of hydrocodone and 500 mg of acetaminophen. Combining these two drugs allows each one to be used at a lower dose than it would need on its own, since they relieve pain through different pathways.
Hydrocodone does the heavy lifting for moderate to severe pain. It works by activating opioid receptors in the brain and spinal cord, which reduces the pain signals your nervous system sends. At higher doses, it also activates additional types of opioid receptors. Acetaminophen adds a second layer of pain relief and can also reduce fever, but it works through a completely separate mechanism that doesn’t involve opioid receptors.
Why It Was Reclassified as Schedule II
Until 2014, hydrocodone combination products like Lortab were classified as Schedule III, a less restrictive category that made them easier to prescribe and refill. The DEA changed that after years of review, moving all hydrocodone combination products to Schedule II. The reclassification process started with a physician’s petition in 1999 and took over a decade. In 2013, an FDA advisory committee voted 19 to 10 to recommend the change.
In practical terms, Schedule II means your doctor cannot call in or fax a Lortab prescription to a pharmacy in most cases. You need a written or electronic prescription for each fill, and there are no automatic refills. This change reflected growing concern about how widely hydrocodone products were prescribed and their role in opioid dependence.
Common Side Effects
The most frequently reported side effects of Lortab are nausea, vomiting, stomach pain, and increased sweating. Some people also experience decreased sex drive or erectile dysfunction. These effects are typical of opioid medications and often improve after the first few days as your body adjusts.
The more serious risk is respiratory depression, where breathing becomes dangerously slow or shallow. This risk is highest during the first 24 to 72 hours of treatment and whenever the dose is increased. Slowed breathing, long pauses between breaths, or shortness of breath are warning signs that need immediate medical attention.
The Acetaminophen Risk
Because Lortab contains acetaminophen, there’s a liver safety concern that pure opioid medications don’t carry. The FDA sets the maximum daily acetaminophen intake at 4,000 milligrams across all medications you’re taking. That ceiling is easy to hit if you’re taking Lortab and also using over-the-counter cold medicine, headache remedies, or sleep aids that contain acetaminophen. Many people don’t realize how many common products include it.
Research from the National Institute of Diabetes and Digestive and Kidney Diseases found that combination acetaminophen-opioid medications contribute disproportionately to acetaminophen overdoses. Too much acetaminophen can cause acute liver failure, which may show up as yellowing of the skin and eyes. If you’re taking Lortab, check the labels of every other medication in your cabinet for acetaminophen (sometimes listed as APAP) to avoid accidentally stacking doses.
Signs of Overdose
A Lortab overdose can involve both the opioid and acetaminophen components, each producing distinct symptoms. The opioid side shows up as extremely slow or shallow breathing, pinpoint pupils, and loss of consciousness or coma. These three signs together are sometimes called the “opioid triad” and are the hallmark of any opioid overdose.
The acetaminophen side of an overdose targets the liver, potentially causing jaundice (yellow skin and eyes) and liver failure. Because liver damage from acetaminophen can take 24 to 72 hours to become obvious, someone may feel relatively fine at first while serious injury is already underway. Naloxone, the opioid overdose reversal drug, can address the breathing problems but does nothing for acetaminophen-related liver damage, which is why both components matter in an emergency.
Dependence and Tolerance
Like all opioid medications, hydrocodone can produce physical dependence with regular use. This means your body adapts to the drug and you may experience withdrawal symptoms if you stop abruptly. Tolerance, where you need higher doses to get the same pain relief, can develop alongside dependence. Neither of these is the same as addiction, though they can overlap. Addiction involves compulsive use despite harm and is a separate diagnosis.
If you’ve been taking Lortab regularly for more than a few weeks, stopping should be done gradually under medical guidance to avoid withdrawal symptoms like muscle aches, anxiety, sweating, and insomnia. The tapering timeline depends on how long you’ve been taking it and at what dose.