Pronunciation: FEN-il-EF-rin/pir-IL-a-meen/dye-HYE-droe-KOE-deen
Generic Name: Phenylephrine/Pyrilamine/Dihydrocodeine
Brand Name: Poly Hist DHC
Poly Hist DHC Liquid is used for:
Relieving symptoms of sinus congestion, runny nose, sneezing, itchy nose or throat, itchy or watery eyes, and cough due to colds, upper respiratory tract infections, or allergies. It may also be used for other conditions as determined by your doctor.
Poly Hist DHC Liquid 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 Poly Hist DHC Liquid if:
- you are allergic to any ingredient in Poly Hist DHC Liquid or to codeine
- you have severe high blood pressure, severe heart blood vessel disease, rapid heartbeat, severe heart problems, narrow-angle glaucoma, known or suspected bowel blockage (paralytic ileus), a stomach ulcer, or you are unable to urinate
- you have very slow or shallow breathing, severe asthma, or you are having an asthma attack
- you take droxidopa, sodium oxybate (GHB), or you have taken furazolidone or a monoamine oxidase inhibitor (MAOI) (eg, phenelzine) within the last 14 days
Contact your doctor or health care provider right away if any of these apply to you.
Before using Poly Hist DHC Liquid:
Some medical conditions may interact with Poly Hist DHC Liquid. 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 are allergic to other narcotic pain medicines (eg, morphine)
- if you have a history of adrenal gland problems (eg, Addison disease, an adrenal gland tumor), heart problems (eg, cor pulmonale; fast, slow, or irregular heartbeat; heart disease), high or low blood pressure, liver or kidney problems, low blood volume, diabetes, blood vessel problems, a stroke, glaucoma or increased pressure in the eye, slow or shallow breathing, curvature of the spine (scoliosis), or thyroid problems
- if you have a history of asthma, chronic obstructive pulmonary disease (COPD), other lung or breathing problems (eg, chronic bronchitis, emphysema, slow or irregular breathing), chronic cough, or breathing problems when you sleep (eg, sleep apnea), or if your cough occurs with large amounts of mucus
- if you have severe drowsiness, a recent head or brain injury, growths in the brain (eg, tumor, lesions), 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 or bowel problems (eg, chronic inflammation, ulceration of the bowel, or diarrhea due to antibiotic use); gallbladder problems (eg, gallstones); pancreatitis; a blockage of your stomach, bladder, or bowel; trouble urinating; an enlarged prostate or other prostate problems; or if you have had recent stomach, bowel, or urinary surgery
- if you have a history of alcohol or drug abuse, mental or mood problems (eg, depression), suicidal thoughts or behavior, you are in alcohol withdrawal, or if you are in poor health or are very overweight
Some MEDICINES MAY INTERACT with Poly Hist DHC Liquid. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Digoxin or droxidopa because the risk of irregular heartbeat or a heart attack may be increased
- Furazolidone, linezolid, or MAOIs (eg, phenelzine) because severe high blood pressure and fever may occur
- Anticholinergics (eg, scopolamine), barbiturates (eg, phenobarbital), beta-blockers (eg, propranolol), catechol-O-methyltransferase (COMT) inhibitors (eg, tolcapone), cimetidine, HIV protease inhibitors (eg, ritonavir), muscle relaxants (eg, cyclobenzaprine), opioid analgesics (eg, hydrocodone), phenothiazines (eg, chlorpromazine), sleep medicines (eg, zolpidem), sodium oxybate (GHB), or tricyclic antidepressants (eg, amitriptyline) because they may increase the risk of Poly Hist DHC Liquid's side effects
- Quinidine or rifamycins (eg, rifampin) because they may decrease Poly Hist DHC Liquid's effectiveness
- Bromocriptine or hydantoins (eg, phenytoin) because the risk of their side effects may be increased by Poly Hist DHC Liquid
- Guanadrel, guanethidine, mecamylamine, methyldopa, or reserpine because their effectiveness may be decreased by Poly Hist DHC Liquid
- Naltrexone because it may decrease Poly Hist DHC Liquid's effectiveness. Withdrawal symptoms may also occur in patients who are physically dependent on opioids. Do not take naltrexone until you have stopped taking Poly Hist DHC Liquid for 7 to 10 days and you have had a negative naloxone challenge test
This may not be a complete list of all interactions that may occur. Ask your health care provider if Poly Hist DHC Liquid 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 Poly Hist DHC Liquid:
Use Poly Hist DHC Liquid as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- Take Poly Hist DHC Liquid by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
- Take Poly Hist DHC Liquid with a full glass of water (8 oz/240 mL).
- Drink plenty of water while taking Poly Hist DHC Liquid.
- 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 Poly Hist DHC Liquid and you are taking it regularly, 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 Poly Hist DHC Liquid.
Important safety information:
- Poly Hist DHC Liquid may cause drowsiness, dizziness, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use Poly Hist DHC Liquid with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
- Do not drink alcohol or use medicines that may cause drowsiness (eg, sleep aids, muscle relaxers) while you are using Poly Hist DHC Liquid; it may add to their effects. Ask your pharmacist if you have questions about which medicines may cause drowsiness.
- Poly Hist DHC Liquid 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 take diet or appetite control medicines while you take Poly Hist DHC Liquid without checking with your doctor.
- Poly Hist DHC Liquid has a decongestant, antihistamine, and cough suppressant in it. Before you start any new medicine, check the label to see if it has a decongestant, antihistamine, or cough suppressant in it too. If it does or if you are not sure, check with your doctor or pharmacist.
- Do not use Poly Hist DHC Liquid 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.
- Poly Hist DHC Liquid may cause you to become sunburned more easily. Avoid the sun, sunlamps, or tanning booths until you know how you react to Poly Hist DHC Liquid. Use a sunscreen or wear protective clothing if you must be outside for more than a short time.
- Poly Hist DHC Liquid may interfere with skin allergy tests. If you are scheduled for a skin test, talk to your doctor. You may need to stop taking Poly Hist DHC Liquid for a few days before the tests.
- Tell your doctor or dentist that you take Poly Hist DHC Liquid before you receive any medical or dental care, emergency care, or surgery.
- Use Poly Hist DHC Liquid with caution in the ELDERLY; they may be more sensitive to its effects, especially confusion, dizziness, drowsiness, low blood pressure, excitability, dry mouth, slow or shallow breathing, and trouble urinating.
- Caution is advised when using Poly Hist DHC Liquid in CHILDREN; they may be more sensitive to its effects, especially excitability.
- Poly Hist DHC Liquid should not be used in CHILDREN younger than 6 years old; safety and effectiveness in these children have not been confirmed. They may be at greater risk of severe and possibly fatal breathing problems.
- PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Poly Hist DHC Liquid while you are pregnant. Some ingredients of Poly Hist DHC Liquid may be found in breast milk. Do not breast-feed while taking Poly Hist DHC Liquid.
When used for long periods of time or at high doses, Poly Hist DHC Liquid may not work as well and may require higher doses to obtain the same effect as when originally taken. This is known as TOLERANCE. Talk with your doctor if Poly Hist DHC Liquid stops working well. Do not take more than prescribed.
Some people who use Poly Hist DHC Liquid 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 suddenly stop taking Poly Hist DHC Liquid, you may experience WITHDRAWAL symptoms including anxiety; diarrhea; fever, runny nose, or sneezing; goose bumps and abnormal skin sensations; nausea; vomiting; pain; rigid muscles; rapid heartbeat; seeing, hearing, or feeling things that are not there; shivering or tremors; sweating; and trouble sleeping.
Possible side effects of Poly Hist DHC Liquid:
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; lightheadedness; loss of appetite; nausea; nervousness or anxiety; sweating; trouble sleeping; upset stomach or mild stomach pain; 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; fainting; fast, slow, or irregular heartbeat; fever, chills, or persistent sore throat; hallucinations; loss of coordination; mental or mood changes (eg, depression); persistent trouble sleeping; ringing in the ears; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; severe or persistent stomach pain; slow or shallow breathing; tremor; trouble urinating or inability to urinate; 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.
See also: Poly Hist DHC side effects (in more detail)
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; limp muscles; seizures; severe dizziness, drowsiness, lightheadedness, or headache; slow or shallow breathing; small pupils; unusually fast, slow, or irregular heartbeat; vomiting.
Proper storage of Poly Hist DHC Liquid:
Store Poly Hist DHC Liquid at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Do not freeze. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Poly Hist DHC Liquid out of the reach of children and away from pets.
General information:
- If you have any questions about Poly Hist DHC Liquid, please talk with your doctor, pharmacist, or other health care provider.
- Poly Hist DHC Liquid 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 is a summary only. It does not contain all information about Poly Hist DHC Liquid. If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.
More Poly Hist DHC resources
- Poly Hist DHC Side Effects (in more detail)
- Poly Hist DHC Use in Pregnancy & Breastfeeding
- Poly Hist DHC Drug Interactions
- 0 Reviews · Be the first to review/rate this drug
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