What happens if I overdose Chlorpheniramine?
Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local, or emergency room immediately. Symptoms may include blurred vision; confusion; hallucinations; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; unusually fast, slow, or irregular heartbeat; vomiting.
Proper storage of Chlorpheniramine:
Store Chlorpheniramine 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 Chlorpheniramine out of the reach of children and away from pets.
Overdose of Chlorpheniramine in details
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: large pupils, flushing, fever, hallucinations, weakness, shaking (tremor), muscle twitching, loss of consciousness, seizures. In children, excitement may occur first, and may be followed by loss of coordination, drowsiness, loss of consciousness, seizures.
If your doctor has prescribed this medication, do not share it with others.
Keep all regular medical and laboratory appointments.
Do not take for several days before allergy testing because test results can be affected.
If you miss a dose, take it as soon as you remember. If it is near the time of your next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
Store at room temperature between 59-86 degrees F (between 15-30 degrees C) away from moisture and light. Store in a tightly closed container. Do not store in the bathroom. Do not freeze liquid forms of this medication. Keep all medicines away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
What should I avoid while taking Chlorpheniramine?
This medicine may cause blurred vision or impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.
Drinking alcohol can increase certain side effects of Chlorpheniramine.
Ask a doctor or pharmacist before using any other cold, cough, allergy, or sleep medicine. Antihistamines are contained in many combination medicines. Taking certain products together can cause you to get too much of a certain drug. Check the label to see if a medicine contains an antihistamine.
Avoid becoming overheated or dehydrated during exercise and in hot weather. Chlorpheniramine can decrease sweating and you may be more prone to heat stroke.
NOTE: This information does not apply if mechlorethamine is applied to skin.
Chlorpheniramine (meh-klor-ETH-ah-meen) is a drug that is used to treat some kinds of cancer. It is a clear liquid that is usually injected into a vein. A blood sample will be taken before each treatment. The dose and timing of your chemotherapy may be changed based on your blood counts and/or other side effects.
Your doctor may tell you to drink lots of liquids (8-12 cups a day). This helps prevent kidney problems in some kinds of cancer.
Other drugs may interact with mechlorethamine. Tell your doctor if you are taking any other drugs as your dose may need to be changed. Check with your doctor or pharmacist before you start taking any new drugs.
The drinking of alcohol (in small amounts) will not affect the safety or usefulness of mechlorethamine.
Chlorpheniramine may cause sterility in men and menopause in women which may be permanent. If you plan to have children, discuss this with your doctor before being treated with mechlorethamine.
Chlorpheniramine may damage sperm and may harm the baby if used during pregnancy. It is best to use birth control while being treated with mechlorethamine. Tell your doctor right away if you or your partner becomes pregnant. Do not breast feed during treatment.
Tell doctors or dentists that you are being treated with mechlorethamine before you receive any treatment from them.
SEE YOUR DOCTOR OR GET EMERGENCY HELP IMMEDIATELY IF YOU HAVE:
- Signs of an infection such as fever (over 100oF or 38oC); chills; cough; sore throat; pain or burning when you pass urine; redness, pain or swelling of any area of your body; sores forming anywhere on your body.
- Signs of bleeding problems such as black, tarry stools; blood in urine; pinpoint red spots on skin.
SEE YOUR DOCTOR AS SOON AS POSSIBLE (DURING OFFICE HOURS) IF YOU HAVE:
- Signs of kidney problems such as lower back or side pain, swelling of feet or lower legs, numbness or tingling in feet or hands.
- Signs of gout such as joint pain.
CHECK WITH YOUR DOCTOR IF ANY OF THE FOLLOWING CONTINUE OR BOTHER YOU:
- Uncontrolled nausea, vomiting or diarrhea.
- Easy bruising or bleeding.
- Redness, swelling, pain or sores where the needle was placed.
- Redness, swelling, pain or sores on your lips, tongue, mouth or throat.
- Skin rash.
What should I discuss with my healthcare provider before taking Chlorpheniramine?
Some medical conditions may interact with Chlorpheniramine. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, plan 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 asthma, lung problems (eg, emphysema), heart problems, high blood pressure, diabetes, heart blood vessel problems, stroke, glaucoma, a blockage of your stomach or intestines, ulcers, a blockage of your bladder, trouble urinating, an enlarged prostate, seizures, or an overactive thyroid
Some MEDICINES MAY INTERACT with Chlorpheniramine. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Furazolidone, MAO inhibitors (eg, phenelzine), sodium oxybate (GHB), or tricyclic antidepressants (eg, amitriptyline) because side effects of Chlorpheniramine may be increased
- Hydantoins (eg, phenytoin) because side effects may be increased by Chlorpheniramine
This may not be a complete list of all interactions that may occur. Ask your health care provider if Chlorpheniramine 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.
Before taking Chlorpheniramine, tell your doctor or pharmacist if you are allergic to it; or to dexchlorpheniramine; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: breathing problems (e.g., asthma, emphysema), a certain eye problem (glaucoma), heart problems, high blood pressure, liver disease, seizures, stomach problems (e.g., ulcers, blockage), overactive thyroid (hyperthyroidism), urination problems (e.g., trouble urinating due to enlarged prostate, urinary retention).
This drug may make you dizzy or drowsy or cause blurred vision. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely. Limit the use of alcohol and certain other medications that cause drowsiness.
To minimize dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
Liquid products may contain aspartame, sugar and/or alcohol. Caution is advised if you have diabetes, alcohol dependence, liver disease, phenylketonuria (PKU), or any other condition that requires you to limit/avoid these substances in your diet. Ask your doctor or pharmacist about using this product safely.
Older adults may be more sensitive to the side effects of this drug, especially drowsiness, dizziness, low blood pressure, confusion, constipation, or trouble urinating. Drowsiness, dizziness, and confusion can increase the risk of falling.
Children may be more sensitive to the effects of antihistamines. In young children, this medication may cause agitation/excitement instead of drowsiness.
During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.
Based on information from related drugs, this medication may pass into breast milk. Consult your doctor before breast-feeding.
What happens if I miss a dose of Chlorpheniramine?
Since this medicine is taken when needed, you may not be on a dosing schedule. If you are taking the medication regularly, take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
- DailyMed. "CHLORPHENIRAMINE POLISTIREX; HYDROCODONE POLISTIREX: DailyMed provides trustworthy information about marketed drugs in the United States. DailyMed is the official provider of FDA label information (package inserts).". https://dailymed.nlm.nih.gov/dailyme... (accessed September 17, 2018).
- DrugBank. "chlorpheniramine". http://www.drugbank.ca/drugs/DB01114 (accessed September 17, 2018).
- MeSH. "Antipruritics". https://www.ncbi.nlm.nih.gov/mesh/68... (accessed September 17, 2018).
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Information checked by Dr. Sachin Kumar, MD Pharmacology