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RyClora

Generic name: dexchlorpheniramine

Used for common cold
Last updated November 3, 2026 0 views
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What is RyClora?

RyClora is an antihistamine that helps relieve sneezing, a runny nose, and itchy or watery eyes caused by allergies, hay fever, and the common cold.

RyClora may also be used for other reasons not mentioned in this medication guide.

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How should I take RyClora?

Use exactly as directed on the label, or as prescribed by your doctor.

Always follow the instructions on the medicine label about giving cold or allergy medicine to a child. Do not use the medicine just to make a child sleepy. Death can occur from the misuse of cold or allergy medicines in very young children.

Measure liquid medicine carefully. Use the dosing syringe provided, or a medicine dose-measuring device (not a kitchen spoon).

Call your doctor if your symptoms do not improve after 7 days, or if you have a fever.

If you need surgery, tell your surgeon if you are currently using RyClora.

Store at room temperature away from moisture and heat. Do not freeze.

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Warnings

Ask a doctor or pharmacist before using RyClora if you have health problems or take other medications, or if you are pregnant or breastfeeding.

Do not use cold or allergy medicine to make a child sleepy.

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Before taking this medicine

You should not use RyClora if you are allergic to it, or if you have:

  • severe or uncontrolled high blood pressure (hypertension);
  • severe coronary artery disease (clogged arteries);
  • a stomach ulcer;
  • narrow-angle glaucoma;
  • if you are unable to urinate; or
  • if you are having an asthma attack.

Do not use RyClora if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.

Ask a doctor or pharmacist if this medicine is safe to use if you have:

  • breathing problems;
  • a bladder obstruction or other urination problems;
  • an enlarged prostate;
  • a stomach ulcer;
  • a blockage in your digestive tract (stomach or intestines);
  • glaucoma;
  • heart disease, high blood pressure;
  • a thyroid disorder;
  • liver or kidney disease;
  • diabetes; or
  • seizures.

Ask a doctor before using this medicine if you are pregnant or breastfeeding.

This medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).

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RyClora side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

RyClora may cause serious side effects. Stop using RyClora and call your doctor right away if you have:

  • extreme drowsiness;
  • confusion, hallucinations;
  • feeling nervous, restless, or dizzy;
  • a seizure; or
  • little or no urination.

Side effects such as dry mouth, constipation, and confusion may happen more often in older adults.

Common side effects of RyClora may include:

  • drowsiness;
  • blurred vision;
  • constipation;
  • flushing (warmth, redness, or tingly feeling);
  • dry mouth, nose, or throat; or
  • feeling restless or excited (especially in a child).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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What happens if I miss a dose?

Since cold or allergy medicine is used as needed, you might not have a regular dosing schedule. If you miss a dose and it's almost time for your next dose, skip the missed dose. Do not take two doses at the same time.

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What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Avoid driving or hazardous activity until you know how RyClora will affect you. Your reactions could be impaired.

Ask a doctor or pharmacist before using other cold or allergy medicines that may contain similar ingredients.

Drinking alcohol with this medicine can cause side effects.

Avoid becoming overheated during exercise and in hot weather. You may be more prone to heat stroke while taking an antihistamine.

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What other drugs will affect RyClora?

Avoid using this medicine with other drugs that cause drowsiness or slow your breathing (such as opioid medicine, a muscle relaxer, or medicine for anxiety or seizures). Ask a doctor or pharmacist before using any other medication, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed in this medication guide.

This section was rewritten for readability and reviewed for meaning.

Common questions about Ryclora

Can you take antihistamines when pregnant?
According to the American College of Obstetricians and Gynecologists (ACOG), several over-the-counter (OTC) antihistamines may be taken during pregnancy. Older, first-generation antihistamines can be taken, but they may cause drowsiness. Newer, second-generation antihistamines can also be taken and have less risk of drowsiness. Continue reading

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Before you take this medicine: the information on this page is general and may not cover your personal circumstances. Read the label supplied with your medicine and ask a pharmacist or doctor if you are unsure, especially if you are pregnant, breastfeeding, taking other medicines or managing a long-term condition.
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Content is provided for education and is not medical advice. See our medical disclaimer.