
Acnesol A Nanogel
Systopic Lab - 15 G
Prescription required
Cetirizine (5mg)
Sizon 5 mg Tablet is used for treatment of Allergic conditions.
Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026
Sizon 5 mg Tablet contains Cetirizine (5mg). It belongs to the Antihistamine / leukotriene antagonist class of medicines.
Treatment of Allergic conditions
Sizon 5 Tablet is an antihistaminic medication. It treats allergy symptoms such as such as itching, swelling, and rashes by blocking the effects of a chemical messenger (histamine) in the body.
Swallow the tablet whole with a glass of water. Do not chew, crush or break it unless your doctor has told you to. Take it with or without food, often in the evening. Taking it at about the same time each day helps you remember. Follow the dose and the duration written on your prescription.
Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.
Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.
An overdose of this medicine can cause severe drowsiness, a fast heartbeat, confusion and, in children, agitation and fits. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.
Most side effects of Sizon are mild and settle as the body adjusts. Reported side effects include:
Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.
| Pregnancy | Sizon 5 Tablet is probably safe to use during pregnancy.<br>Animal studies have shown low or no adverse effect on the foetus, however, there are limited human studies. Please consult your doctor. |
|---|---|
| Breastfeeding | Sizon 5 Tablet is probably safe to use during lactation. Limited human data suggests that the drug does not represent a significant risk to the baby.<br>Larger doses or prolonged use of Sizon 5 Tablet may cause sleepiness and other effects in the baby |
| Alcohol | Sizon 5 Tablet may cause excessive drowsiness and calmness with alcohol. |
| Driving | May cause drowsiness or affect your concentration. Do not drive until you know how it affects you. |
| Kidney | Sizon 5 Tablet should be used with caution in patients with kidney disease. Dose adjustment of Sizon 5 Tablet may be needed. Please consult your doctor.<br>Not recommended in patients with severe kidney disease. May cause excessive sleepiness in patients with end stage kidney disease. |
| Liver | Sizon 5 Tablet is probably safe to use in patients with liver disease. Limited data available suggests that dose adjustment of Sizon 5 Tablet may not be needed in these patients. Please consult your doctor. |
| Habit forming | No |
Older antihistamines cause marked drowsiness — do not drive or operate machinery until you know how this affects you. Tell your doctor promptly about any change in mood, sleep, agitation or unusual thoughts while taking montelukast; this is uncommon but recognised. This relieves the symptoms of an allergy; it does not treat the cause, and it is not a treatment for an acute asthma attack. Seek emergency care for swelling of the lips, tongue or throat, or difficulty breathing.
Not for anyone with a known allergy to this medicine or to any ingredient in the pack. The sedating antihistamines are not suitable for very young children, or for people with glaucoma or an enlarged prostate, without medical advice.
Alcohol, sleeping tablets and other sedating medicines add to the drowsiness. Tell your doctor about all cold and cough preparations — many already contain an antihistamine.
Store below 30°C in the original pack, away from direct sunlight and moisture. Keep out of the reach of children.
Try giving the medicines at the same time each day, to help you remember. Your child may feel sleepy or dizzy after each dose of SizoN 5 Tablet. If this happens, make your child sit or lie down and ask them to be careful while performing tasks that require mental focus. Avoid giving SizoN 5 Tablet with fatty meals and fruit juice as both can reduce the absorption of the medicine. Dry mouth can occur as a side effect of taking SizoN 5 Tablet. Taking sips of water may help. SizoN 5 Tablet can trigger constipation in your child. Give plenty of fluids and a fiber-rich diet to your child. SizoN 5 Tablet should be avoided in children who are less than 4 years of age as there is a risk of respiratory distress. Your doctor has prescribed SizoN 5 Tablet to help relieve allergy symptoms such as itching, swelling, and rashes. It is okay to take SizoN 5 Tablet with most other medications as it has few drug interactions. Compared to other similar medications, SizoN 5 Tablet is less likely to cause sleepiness. Stop taking SizoN 5 Tablet at least three days before taking an allergy test as it can affect the test results.
Medicines with the same active ingredient (Cetirizine (5mg)). Ask your doctor or pharmacist before switching brands.
| Medicine | Pack | Price | vs Sizon 5 mg Tablet |
|---|---|---|---|
| Cetzine SyrupDr Reddys Laboratories Ltd | syrup · 60 Ml | ₹42 | 157% more |
| Healcet L SyrupHEAL (INDIA) PHARMACEUTICALS | syrup · 60ML | ₹90 | 448% more |

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The information on Sizon 5 mg Tablet is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.