Skip to Content
Be ready for a severe allergy emergency. Read more >>

Neo AC syrup

Generic Name: pseudoephedrine/pyrilamine/codeine (SOO-doe-e-FED-rin/pir-IL-a-meen/KOE-deen)
Brand Name: Neo AC

Some children have had serious and sometimes fatal breathing problems when using codeine after surgery to remove tonsils or adenoids. Talk with your doctor for more information.


Neo AC syrup is used for:

Relieving symptoms of sinus congestion, runny nose, sneezing, and cough caused by colds, upper respiratory infections, or allergies. It may also be used for other conditions as determined by your doctor.

Neo AC syrup is a decongestant, antihistamine, and cough suppressant combination. The decongestant works by constricting blood vessels and reducing swelling in the nasal passages. The antihistamine works by blocking the action of histamine, which helps reduce symptoms such as watery eyes and sneezing. The cough suppressant works in the brain to help decrease the cough reflex to reduce a dry cough.

Do NOT use Neo AC syrup if:

  • you are allergic to any ingredient in Neo AC syrup or any other codeine- or morphine-related medicine (eg, codeine, oxycodone)
  • you have severe high blood pressure, severe heart blood vessel disease, rapid heartbeat, severe heart problems, stomach ulcer, narrow-angle glaucoma, difficulty urinating, or you are having an asthma attack
  • you take sodium oxybate (GHB) or you have taken furazolidone or a monoamine oxidase inhibitor (MAOI) (eg, phenelzine) within the last 14 days
  • the patient is a child and has just had surgery to remove tonsils or adenoids

Contact your doctor or health care provider right away if any of these apply to you.

Before using Neo AC syrup:

Some medical conditions may interact with Neo AC syrup. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

  • if you are pregnant, planning to become pregnant, or are breast-feeding
  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
  • if you have allergies to medicines, foods, or other substances
  • if you have a fast, slow, or irregular heartbeat
  • if you have a history of adrenal gland problems (eg, adrenal gland tumor); heart problems (eg, heart disease); high or low blood pressure; low blood volume; diabetes; blood vessel problems; stroke; glaucoma; a blockage of your stomach, bladder, or intestines; trouble urinating; an enlarged prostate or other prostate problems; mental or mood problems (eg, depression); pancreas problems (eg, pancreatitis); thyroid problems
  • if you have a history of asthma or other breathing problems, chronic cough, lung problems (eg, chronic bronchitis, emphysema), or chronic obstructive pulmonary disease (COPD), or your cough occurs with large amounts of mucus
  • if you have severe drowsiness, recent head or brain injury, brain tumor, increased pressure in the brain, infection of the brain or nervous system, or a seizure disorder (eg, epilepsy)
  • if you have a history of constipation, stomach problems (eg, ulcers), bowel problems (eg, chronic inflammation or ulceration of the bowel), or gallbladder problems (eg, gallstones), or you have had recent stomach, bowel, or urinary surgery
  • if you have a history of alcohol abuse, drug abuse, or suicidal thoughts or behavior; or you are in poor health or are very overweight
  • if you take medicine for high blood pressure or depression

Some MEDICINES MAY INTERACT with Neo AC syrup. Tell your health care provider if you are taking any other medicines, especially any of the following:

  • Beta-blockers (eg, propranolol), catechol-O-methyltransferase (COMT) inhibitors (eg, tolcapone), cimetidine, furazolidone, HIV protease inhibitors (eg, ritonavir), linezolid, MAOIs (eg, phenelzine), muscle relaxants (eg, cyclobenzaprine), opioid analgesics (eg, hydrocodone), phenothiazines (eg, chlorpromazine), sodium oxybate (GHB), or tricyclic antidepressants (eg, amitriptyline) because they may increase the risk of Neo AC syrup's side effects
  • Digoxin or droxidopa because the risk of irregular heartbeat or heart attack may be increased
  • Naltrexone, quinidine, or rifamycins (eg, rifampin) because they may decrease Neo AC syrup's effectiveness
  • Bromocriptine or hydantoins (eg, phenytoin) because the risk of their side effects may be increased by Neo AC syrup
  • Guanadrel, guanethidine, mecamylamine, methyldopa, or reserpine because their effectiveness may be decreased by Neo AC syrup

This may not be a complete list of all interactions that may occur. Ask your health care provider if Neo AC syrup may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use Neo AC syrup:

Use Neo AC syrup as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Take Neo AC syrup by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
  • Take Neo AC syrup with a full glass of water (8 oz/240 mL).
  • Drink plenty of water while taking Neo AC syrup.
  • Use a measuring device marked for medicine dosing. Ask your pharmacist for help if you are unsure of how to measure your dose.
  • If you miss a dose of Neo AC syrup, take it as soon as possible.
  • If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use Neo AC syrup.

Important safety information:

  • Neo AC syrup may cause drowsiness, dizziness, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use Neo AC syrup with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
  • Neo AC syrup may cause dizziness, lightheadedness, or fainting; alcohol, hot weather, exercise, or fever may increase these effects. To prevent them, sit up or stand slowly, especially in the morning. Sit or lie down at the first sign of any of these effects.
  • Do not drink alcohol or use medicines that may cause drowsiness (eg, muscle relaxers, sleep aids) while you are using Neo AC syrup; it may add to their effects. Ask your pharmacist if you have questions about which medicines may cause drowsiness.
  • Do not take diet or appetite control medicines while you take Neo AC syrup without checking with your doctor.
  • Neo AC syrup has pseudoephedrine and brompheniramine in it. Before you start any new medicine, check the label to see if it has pseudoephedrine or brompheniramine in it too. If it does or if you are not sure, check with your doctor or pharmacist.
  • Do not use Neo AC syrup for a cough with a lot of mucus. Do not use it for a long-term cough (eg, caused by asthma, emphysema, smoking). However, you may use it for these conditions if your doctor tells you to.
  • Do NOT take more than the recommended dose or use for longer than prescribed without checking with your doctor.
  • If your symptoms do not get better within 5 to 7 days, if they get worse, or if they occur along with a fever, check with your doctor.
  • Neo AC syrup may cause you to become sunburned more easily. Avoid the sun, sunlamps, or tanning booths until you know how you react to Neo AC syrup. Use a sunscreen or wear protective clothing if you must be outside for more than a short time.
  • Neo AC syrup may interfere with skin allergy tests. If you are scheduled for a skin test, talk to your doctor. You may need to stop taking Neo AC syrup for a few days before the tests.
  • Tell your doctor or dentist that you take Neo AC syrup before you receive any medical or dental care, emergency care, or surgery.
  • Use Neo AC syrup with caution in the ELDERLY; they may be more sensitive to its effects, especially confusion, dizziness, drowsiness, low blood pressure, excitability, dry mouth, and trouble urinating.
  • Caution is advised when using Neo AC syrup in CHILDREN; they may be more sensitive to its effects, especially excitability.
  • PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Neo AC syrup while you are pregnant. Do not take Neo AC syrup in the third trimester of pregnancy. It is not known if this medicine is found in breast milk. Do not breast-feed while taking Neo AC syrup.

Some people who use Neo AC syrup for a long time may develop a need to continue taking it. People who take high doses are also at risk. This is known as DEPENDENCE or addiction.

If you stop taking Neo AC syrup suddenly, you may have WITHDRAWAL symptoms. These may include anxiety, irregular heartbeat, irritability, restlessness, trouble sleeping, and unusual sweating.

Possible side effects of Neo AC syrup:

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); confusion; difficulty urinating or inability to urinate; fast, slow, or irregular heartbeat; hallucinations; loss of coordination; mental or mood changes (eg, irritability); ringing in the ears; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; shallow breathing; tremor; trouble sleeping; uncontrolled muscle movements; unusual bruising or bleeding; unusual weakness or tiredness; vision changes or blurred vision.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include blurred vision; cold and clammy skin; coma; confusion; hallucinations; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; shallow breathing; unusually fast, slow, or irregular heartbeat; vomiting.

Proper storage of Neo AC syrup:

Store Neo AC syrup at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep Neo AC syrup out of the reach of children and away from pets.

General information:

  • If you have any questions about Neo AC syrup, please talk with your doctor, pharmacist, or other health care provider.
  • Neo AC syrup is to be used only by the patient for whom it is prescribed. Do not share it with other people.
  • If your symptoms do not improve or if they become worse, check with your doctor.
  • Check with your pharmacist about how to dispose of unused medicine.

This information should not be used to decide whether or not to take Neo AC syrup or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about Neo AC syrup. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Neo AC syrup. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using Neo AC syrup.

Review Date: August 8, 2016

Disclaimer: This information should not be used to decide whether or not to take this medicine or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using this medicine.

Hide