Trinalin Repetabs

Generic name: Azatadine with pseudoephedrine.

Trinalin Repetabs is an antihistamine and decongestant combination. Antihistamines block the action of histamine, a chemical the body produces during an allergic reaction. Decongestants reduce nasal congestion, making it easier to breathe. 

Quick Facts About Trinalin Repetabs


Used to treat nasal stuffiness and middle ear congestion caused by hay fever and ongoing nasal inflammation.

Trinalin Repetabs Dosage

Take exactly as prescribed; do not exceed dosage.

  • Usual adult dose: 1 tablet taken 2 times per day.
  • Usual child dose: for children ages 12 and over — 1 tablet taken 2 times per day. Not generally prescribed for children under 12 years.
  • Missed dose: if taking on a regular schedule — take as soon as possible, unless almost time for next dose. In that case, do not take missed dose; go back to regular schedule. Do not double doses.

Trinalin Repetabs Side Effects

Overdose symptoms:

anxiety, bluish color caused by lack of oxygen, blurred vision, chest pain, coma, convulsions, decreased mental alertness, delusions, difficulty sleeping, difficulty urinating, dizziness, excitement, extreme calm (sedation), exaggerated sense of well-being, fluttery heartbeat, giddiness, hallucinations, headache, high blood pressure or low blood pressure, irregular heartbeat, lack of muscle coordination, muscle tenseness, muscle weakness, nausea, perspiration, rapid heartbeat, restlessness, ringing in the ears, temporary interruption of breathing, thirst, tremors, vomiting. Overdose symptoms more common in children: dry mouth, fixed or dilated pupils, flushing, overstimulation, stomach and intestinal problems, very high body temperature. If you suspect an overdose, immediately seek medical attention.

Overdose may be fatal.

Side effects: abdominal cramps; acute inflammation of the inner ear; anemia; anxiety; blood disorders; blurred vision; chest pain; chills; confusion; constipation; convulsions; diarrhea; difficulty breathing; dilated pupils; disturbed coordination; dizziness; dry mouth, nose, and throat; early menstruation; exaggerated feeling of well-being; excessive perspiration; excitement; extreme calm (sedation); fatigue; fear; fluttery heartbeat; frequent urination; hallucinations; headache; high blood pressure; hives; hysteria; increased chest congestion; increased sensitivity to light; insomnia; irregular heartbeat; irritability; loss of appetite; low blood pressure; nausea; nervousness; painful or difficult urination; pale skin; rapid heartbeat; rash; restlessness; ringing in the ears; severe allergic reaction; sleepiness; stuffy nose; tension; tightness in the chest; tingling or pins and needles; tremor; upset stomach; urinary retention; vertigo; vomiting; weakness; wheezing.

No known less common or rare Trinalin Repetabs side effects.


Inform your doctor before combining Trinalin Repetabs with:

antacids such as Maalox; barbiturates such as Phenobarbital; beta-blocking blood pressure drugs such as Tenormin and Inderal; blood thinners such as Coumadin; Digitalis (Lanoxin); drugs for depression such as Prozac and Elavil; high blood pressure drugs such as Aldomet and Inversine; Kaolin (Kaopectate); MAO-inhibitor drugs (antidepressant! such as Nardil or Parnate); sedatives such as Nembutal and Seconal; tranquilizers such as Xanax and Valium.

Alcohol may increase the effects of this medication! do not drink alcohol when taking medication. 

Special Cautions

Antihistamines can cause severe reactions in babies when used in last 3 months of pregnancy. If pregnant or planning to become pregnant, inform your doctor immediately. May appear in breast milk; could affect a nursing infant, so avoid if breastfeeding.

May cause dizziness, extreme calm (sedation), and low blood pressure in seniors. Also more likely to cause side effects such as confusion, convulsions, hallucinations, and death in seniors.

Not prescribed for children under 12 years.

  • May cause drowsiness and impair your ability to drive a car or operate machinery. Do not take part in any activity that requires alertness.
  • Should not take if you have: difficulty urinating; over-active thyroid; narrow-angle glaucoma; sensitivity to azatadine or pseudoephedrine; severe heart disease; severe high blood pressure; or if you take MAO inhibitors (antidepressants).
  • Use with caution if you have: bladder obstruction due to enlarged prostate or other bladder problems, diabetes, heart disease, high blood pressure, history of bronchial asthma, increased eye pressure, peptic ulcer or other upper intestinal obstruction.
  • Can be habit-forming at high doses.

Note: provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Trinalin Repetabs side effects, please contact your healthcare provider