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Semprex-D Side Effects

Generic Name: acrivastine / pseudoephedrine

Note: This document contains side effect information about acrivastine / pseudoephedrine. Some of the dosage forms listed on this page may not apply to the brand name Semprex-D.

In Summary

Common side effects of Semprex-D include: dizziness and drowsiness. Other side effects include: insomnia, sedation, and xerostomia. See below for a comprehensive list of adverse effects.

For the Consumer

Applies to acrivastine / pseudoephedrine: oral capsule

Along with its needed effects, acrivastine/pseudoephedrine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Get emergency help immediately if any of the following symptoms of overdose occur while taking acrivastine / pseudoephedrine:

Symptoms of overdose
  • Blurred vision
  • chest pain or discomfort
  • cold, clammy, or pale skin
  • confusion
  • dizziness
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • irregular heartbeats
  • seizures
  • shortness of breath
  • slow heart rate
  • sweating
  • unusual tiredness or weakness

Some side effects of acrivastine / pseudoephedrine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common
  • Dry mouth
  • headache
  • sleepiness or unusual drowsiness
Less common
  • Acid or sour stomach
  • belching
  • body aches or pain
  • congestion
  • cough
  • dryness or soreness of the throat
  • fever
  • heartburn
  • hoarseness
  • indigestion
  • lack or loss of strength
  • nausea
  • nervousness
  • runny nose
  • stomach discomfort, upset, or pain
  • tender, swollen glands in the neck
  • trouble sleeping
  • trouble swallowing
  • voice changes

For Healthcare Professionals

Applies to acrivastine / pseudoephedrine: oral capsule

Nervous system

Although acrivastine has little effect on the central nervous system, a reduction in motor skills when taken with alcohol has been seen in at least one study. Patients should be warned not to take acrivastine with alcohol or other sedating drugs.[Ref]

Nervous system side effects of pseudoephedrine have included stimulation, resulting in tremor, anxiety, and nervousness. Insomnia has been reported in up to 30% of pseudoephedrine-treated patients. Headache has also been reported.

Nervous system side effects of acrivastine have included uncommon reports of sedation especially when given in combination with pseudoephedrine. Acrivastine has caused more sedation than placebo, but less than other antihistamines with sedating qualities. Acrivastine has also rarely caused headache, somnolence, and dizziness.[Ref]


Cardiovascular side effects of pseudoephedrine have included significant increases in heart rate. Hypertension and arrhythmias may be problematic in susceptible patients.[Ref]

Pseudoephedrine causes vasoconstriction which generally does not produce hypertension, but may be problematic for patients with preexisting hypertension. Arrhythmias may be produced in predisposed patients. Rarely, pseudoephedrine has been reported to cause coronary artery spasm and chest pain.[Ref]


Gastrointestinal side effects of pseudoephedrine have included anorexia and gastric irritation in approximately 5% of patients. Dry mouth, nose, or throat has occurred in up to 15% of patients.

Gastrointestinal side effects of acrivastine have included dry mouth, and rarely, nausea.[Ref]


Hypersensitivity side effects of pseudoephedrine have included reports of fixed drug eruptions.

Hypersensitivity side effects of acrivastine have included rare reports of reactions.[Ref]


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21. Shelley WB, Shelley ED "Nonpigmenting fixed drug eruption as a distinctive reaction pattern: examples caused by sensitivity to pseudoephedrine hydrochloride and tetrahydrozoline." J Am Acad Dermatol 17 (1987): 403-7

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.