Rigix is an antihistamine medication commonly used to relieve allergy symptoms such as runny or itchy nose, sneezing, itchy or watery eyes, and itching of the throat or nose. It is available over-the-counter and by prescription. While Rigix is generally considered safe and well-tolerated, it can have side effects in some individuals. Here are some potential side effects of Rigix:

Common Side Effects:

  • Drowsiness: One of the most common side effects of cetirizine is drowsiness. However, Rigixis classified as a non-sedating or second-generation antihistamine, which means it is less likely to cause drowsiness compared to older antihistamines like diphenhydramine.
  • Dry Mouth: Rigix can reduce saliva production, leading to a dry mouth or throat.
  • Headache: Some people may experience mild headaches while taking Rigix.
  • Stomach Upset: It can occasionally cause stomach discomfort or nausea.
  • Fatigue: Although less common than drowsiness, some individuals may experience fatigue.

Less Common Side Effects:

  • Dizziness: Dizziness can occur in some people taking Rigix.
  • Irritability: Some individuals may experience feelings of irritability or restlessness.
  • Sore Throat: Sore throat is a less common side effect.
  • Abdominal Pain: Abdominal pain or discomfort may occur in rare cases.

Serious Side Effects :

  • Allergic Reactions: Severe allergic reactions to Rigix, such as difficulty breathing, and swelling of the face, lips, tongue, or throat, are extremely rare but should be reported to a healthcare professional immediately if they occur.
  • Irregular Heartbeat: In very rare cases, Rigix may cause irregular heartbeats. Seek medical attention if you experience palpitations or an irregular heartbeat.
  • Seizures: Although extremely rare, there have been reports of seizures in individuals taking Rigix. If you have a history of seizures or are at risk for seizures, consult your healthcare provider before using this medication.
Rigix Side Effects

What is Rigix?

Rigix is one of the leading brands of Cetirizine Dihydrochloride, manufactured and marketed by AGP Pharma, Pakistan.

Rigix : Available Formulations and Strengths

Presently, Rigix is available in Tablet and Syrup forms.

Rigix Tablet : 10mg strength

Rigix Syrup : 5mg/5ml strength

What Are The Possible Drug Interactions of Rigix?

  • Alcohol: While Rigix itself is not known to interact directly with alcohol, both alcohol and Rigix can cause drowsiness. Combining them may enhance the sedative effects and impair your ability to operate machinery or drive safely. It’s best to limit or avoid alcohol consumption while taking Rigix.
  • Sedatives and Central Nervous System Depressants: Rigix may increase the sedative effects of other medications that affect the central nervous system, such as benzodiazepines, sleep aids, and some antidepressants. This combination can lead to excessive drowsiness or impaired coordination.
  • Other Antihistamines: Taking multiple antihistamines at the same time may result in additive effects and increase the risk of side effects like drowsiness. It’s generally not recommended to use multiple antihistamines simultaneously.
  • Ketoconazole and Erythromycin: These medications, which are used to treat fungal infections and bacterial infections, respectively, can inhibit the metabolism of Rigix, potentially leading to increased levels of Cetirizine Dihydrochloride in the blood. This may increase the risk of side effects.
  • Cimetidine: Cimetidine, often used to treat heartburn and ulcers, can also inhibit the metabolism of Rigix, potentially leading to increased levels of Cetirizine Dihydrochloride in the bloodstream.
  • Selective Serotonin Reuptake Inhibitors (SSRIs): There is a theoretical risk of an increased risk of serotonin syndrome when Rigix is combined with SSRIs, although this interaction is not well-documented.
  • Grapefruit Juice: Grapefruit juice can interact with Rigix and other medications by inhibiting certain enzymes responsible for drug metabolism. This can result in higher levels of Cetirizine Dihydrochloride in the bloodstream.