Disclaimer: This article is for informational purposes only and does not constitute medical advice. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.
Overview
Reactine® contains cetirizine, an effective antihistamine available in Canada.
Reactine® is a brand name for cetirizine hydrochloride, a second-generation antihistamine commonly used in Canada. Other Canadian brands containing cetirizine include Aerius®, Aller-Tec®, and Histex®. These medications work by blocking histamine receptors to reduce allergic responses. Reactine® is recognized for its effectiveness with minimal sedation compared to first-generation antihistamines.
How Reactine® Works
Reactine® blocks histamine to reduce allergic response signals.
At the biological level, cetirizine in Reactine® selectively blocks peripheral H1 histamine receptors. This action prevents histamine, a chemical released during allergic reactions, from binding to receptors and triggering typical allergy symptoms. Because cetirizine does not readily cross the blood-brain barrier, it causes less drowsiness than older antihistamines.
Dosage Instructions of Reactine®
Reactine® comes in tablets, chewables, and liquid forms in Canada.
In Canada, Reactine® is available in several formats including 10 mg film-coated tablets, 5 mg chewable tablets for children, and a syrup formulation. These options provide flexibility depending on age and preference.
Follow label directions and consult a doctor before use.
General dosing guidelines recommend one 10 mg tablet once daily for adults and children over 12 years. Lower doses apply to younger children, often via syrup or chewables. It is important to follow package instructions or healthcare advice carefully and not to exceed the recommended dose.
Storage Instructions
Store Reactine® at room temperature away from moisture and heat. Keep Reactine® tablets and syrup in their original packaging at temperatures between 15°C and 30°C (59°F and 86°F). Avoid storing in bathrooms or other humid areas to maintain medication stability.
Side Effects of Reactine®
Mostly mild; watch for rare serious reactions.
Common side effects of Reactine® include dry mouth, headache, and mild drowsiness. Serious side effects are rare but can include allergic reactions such as rash or swelling. If unusual symptoms occur, seek medical advice promptly.
Important Safety Information About Reactine®
Use with caution in certain medical conditions; consult Health Canada warnings.
Health Canada advises that Reactine® should be used cautiously in patients with kidney impairment or other preexisting conditions. Always review the official product monograph and consult a healthcare professional before starting Reactine®.
Drug Interactions
Avoid alcohol and certain medications that increase drowsiness.
Reactine® may interact with alcohol and other central nervous system depressants, potentially increasing drowsiness. Some medications may also alter cetirizine levels. Consult your healthcare provider before combining Reactine® with other drugs.
Brands & DIN Number of Reactine®
Brand Names
- Aerius®
- Aller-Tec®
- Histex®
Key Takeaways
- 1• Reactine® contains cetirizine hydrochloride, a second-generation antihistamine.
- 2• Available in tablets, chewables, and syrup in Canada.
- 3• Works by blocking H1 histamine receptors to reduce allergic reactions.
- 4• Usually causes minimal drowsiness compared to older antihistamines.
- 5• Available over-the-counter but consult a healthcare professional before use.
- 6• Store at room temperature away from moisture and heat.
- 7• Watch for mild side effects; serious reactions are rare.
- 8• Avoid alcohol and certain medications to prevent interactions.