Medically reviewed on August 27, 2018
What is DryMax?
Chlorpheniramine and methscopolamine are antihistamines that reduce the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).
DryMax may also be used for purposes not listed in this medication guide.
Do not use this medicine if you have taken 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, and tranylcypromine.
Before taking this medicine
Do not use DryMax if you have taken 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, and tranylcypromine.
To make sure this medicine is safe for you, tell your doctor if you have:
a blockage in your digestive tract (stomach or intestines);
liver or kidney disease;
bladder obstruction or other urination problems;
pheochromocytoma (an adrenal gland tumor);
overactive thyroid; or
FDA pregnancy category C. It is not known whether DryMax will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.
How should I take DryMax?
Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Cough or cold medicine is usually taken only for a short time until your symptoms clear up.
Do not give this medication to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.
Do not crush, chew, or break an extended-release tablet. Swallow it whole.
Measure liquid medicine with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.
If you need surgery or medical tests, tell the surgeon or doctor ahead of time if you have taken this medicine within the past few days.
Store at room temperature away from moisture and heat.
What happens if I miss a dose?
Since DryMax 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.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
What should I avoid while taking DryMax?
Drinking alcohol can increase certain side effects of chlorpheniramine, methscopolamine, and pseudoephedrine.
Ask a doctor or pharmacist before using any other cold, cough, allergy, or sleep medicine. Antihistamines and decongestants 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 or decongestant.
This medication may cause blurred vision and may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert and able to see clearly.
Avoid becoming overheated or dehydrated during exercise and in hot weather. Chlorpheniramine and methscopolamine can decrease sweating and you may be more prone to heat stroke.
DryMax side effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using DryMax and call your doctor at once if you have:
fast or uneven heart rate;
pounding heartbeats or fluttering in your chest;
painful or difficult urination, little or no urinating;
tremors, seizure (convulsions); or
Common side effects may include:
headache, dizziness, drowsiness;
dry mouth, nose, or throat;
sleep problems (insomnia); or
feeling restless or excited (especially in children).
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.
See also: Side effects (in more detail)
What other drugs will affect DryMax?
Tell your doctor about all medicines you use, including prescription and over-the-counter medicines, vitamins, and herbal products. Some medicines can cause unwanted or dangerous effects when used together. Not all possible interactions are listed in this medication guide.
Taking this medicine with other drugs that make you sleepy or slow your breathing can worsen these effects. Ask your doctor before taking DryMax with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Copyright 1996-2018 Cerner Multum, Inc. Version: 3.01.
More about DryMax (chlorpheniramine / methscopolamine / pseudoephedrine)
- DryMax Side Effects
- Dosage Information
- Drug Interactions
- En Español
- Drug class: upper respiratory combinations
Other brands: PCM-LA