Q-Hist LA Side Effects
Generic Name: chlorpheniramine / phenylephrine / phenyltoloxamine
Note: This document contains side effect information about chlorpheniramine / phenylephrine / phenyltoloxamine. Some of the dosage forms listed on this page may not apply to the brand name Q-Hist LA.
Applies to chlorpheniramine / phenylephrine / phenyltoloxamine: oral liquid, oral tablet extended release
Get emergency medical help if you have any of these signs of an allergic reaction while taking chlorpheniramine / phenylephrine / phenyltoloxamine: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using this medicine 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
vision changes, severe dizziness, feeling like you might pass out.
Common side effects may include:
headache, dizziness, drowsiness;
dry mouth, nose, or throat;
upset stomach, loss of appetite, nausea, constipation;
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.
Some side effects of Q-Hist LA may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.
More about Q-Hist LA (chlorpheniramine / phenylephrine / phenyltoloxamine)
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- Drug class: upper respiratory combinations