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Poly Hist PD (old formulation)
Generic name: chlorpheniramine, phenylephrine, and pyrilamine
Brand names: Chlorex-A 12, Conal, Nalex A 12, MyHist-PD, Phena-Plus, Phena-S, Poly Hist PD (old formulation), Ru-Hist Forte
What is Poly Hist PD (old formulation)?
Poly Hist PD (old formulation) is a combination medicine that helps relieve symptoms of coughs, colds, and allergies.
Poly Hist PD (old formulation) may also be used for reasons not mentioned in this medication guide.
This section was rewritten for readability and reviewed for meaning.
How should I take Poly Hist PD (old formulation)?
Use exactly as directed on the label, or as prescribed by your doctor. Cold or cough medicine is only for short-term use.
Call your doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache, cough, or skin rash.
Do not give this medication to a child younger than 6 years old. Always ask a doctor before giving a cough or cold medicine to a child.
Follow all directions when giving Poly Hist PD (old formulation) to a child. Do not use the medicine to make a child sleepy. Misuse of this medicine may cause death in very young children.
Shake the oral suspension (liquid). Measure a dose with the supplied measuring device (not a kitchen spoon).
Store at room temperature away from moisture, heat, and light.
This section was rewritten for readability and reviewed for meaning.
Warnings
You should not use Poly Hist PD (old formulation) if you have severe coronary artery disease, diabetes, an overactive thyroid, asthma, pneumonia, or other breathing issues.
Do not use Poly Hist PD (old formulation) if you have taken an MAO inhibitor in the last 14 days. A serious drug interaction could happen. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, and tranylcypromine.
Do not give this medicine to a child younger than 6 years old. Misuse of this medicine can lead to death in very young children.
Do not use this medicine to make a child sleepy.
This section was rewritten for readability and reviewed for meaning.
Before taking this medicine
Do not use Poly Hist PD (old formulation) if you have taken an MAO inhibitor in the last 14 days. A serious drug interaction could happen. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, and tranylcypromine. Wait at least 14 days after stopping an MAO inhibitor before you take this medicine.
You should not use this medicine if you are allergic to chlorpheniramine, phenylephrine, pyrilamine, or to other decongestants, or if you have:
- severe coronary artery disease;
- diabetes;
- overactive thyroid; or
- asthma, pneumonia, or other breathing issues.
Tell your doctor if you have ever had:
- heart disease or high blood pressure;
- blood circulation problems;
- glaucoma;
- an ulcer or blockage in the stomach;
- enlarged prostate;
- bladder blockage or other urination issues; or
- a history of seizures.
Tell your doctor if you are pregnant or breastfeeding.
This section was rewritten for readability and reviewed for meaning.
Poly Hist PD (old formulation) side effects
Get emergency medical help if you notice signs of an allergic reaction: hives, trouble breathing, swelling of your face, lips, tongue, or throat.
Stop using Poly Hist PD (old formulation) and call your doctor right away if you experience:
- confusion, hallucinations;
- feeling nervous or irritable;
- trouble sleeping;
- little or no urination;
- a seizure (convulsions);
- numbness or tingling;
- feeling light-headed, as if you might faint;
- fast or irregular heartbeats; or
- severe headache, blurred vision, or a pounding feeling in your neck or ears.
Older adults may be at a higher risk for serious side effects.
Common side effects of Poly Hist PD (old formulation) may include:
- nausea, constipation, loss of appetite;
- rash or itching;
- increased sweating;
- dry mouth, nose, or throat;
- blurred vision;
- headache, dizziness; or
- feeling restless or excited (especially in children).
This is not a complete list of side effects, and others may happen. Call your doctor for medical advice about side effects. You can report side effects to the FDA at 1-800-FDA-1088.
This section was rewritten for readability and reviewed for meaning.
What happens if I miss a dose?
Take the medicine as soon as you can, but if it is almost time for your next dose, skip the missed dose. Do not take two doses at the same time.
This section was rewritten for readability and reviewed for meaning.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose can be fatal.
Overdose symptoms may include dry mouth, extreme drowsiness, confusion, ringing in your ears, tremors, seizure, dilated pupils, vomiting, and loss of consciousness.
Poly Hist PD (old formulation) may cause blurred vision and may impair your reactions. Avoid driving or hazardous activity until you know how this medicine will affect you.
Drinking alcohol with this medicine can cause side effects.
Ask a doctor or pharmacist before taking other cough or cold medicines that may contain similar ingredients.
Poly Hist PD (old formulation) could make you sunburn more easily. Avoid sunlight or tanning beds. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.
This section was rewritten for readability and reviewed for meaning.
What other drugs will affect Poly Hist PD (old formulation)?
Using Poly Hist PD (old formulation) with other medications that can make you feel sleepy or slow your breathing may make this effect worse. Talk to your doctor before using opioid medication, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.
Other medications may affect how Poly Hist PD (old formulation) works, including prescription and over-the-counter medicines, vitamins, and herbal products. Inform your doctor about all other medications you are taking.
This section was rewritten for readability and reviewed for meaning.
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Content is provided for education and is not medical advice. See our medical disclaimer.