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Content Reviewed By:
Dr. Sanjay Mehta
, (MBBS)
Written By:
Ms. Kavita Desai
, (B.Pharm)
Common side effects of ONCET 3D TABLET may include nausea, vomiting, diarrhea, stomach pain, indigestion, heartburn, loss of appetite, dizziness, headache, drowsiness, fatigue, weakness, dry mouth, and skin rash. Less common but potentially serious side effects can include allergic reactions (such as hives, itching, swelling of the face, lips, or tongue, difficulty breathing), liver problems (indicated by yellowing of the skin or eyes, dark urine, persistent nausea/vomiting), and heart problems (such as chest pain, irregular heartbeat). Other possible side effects are constipation, flatulence, blurred vision, tinnitus (ringing in the ears), anxiety, and depression. Consult your doctor immediately if you experience any severe or persistent side effects.

Heart and Blood Pressure
Use with cautionIf Oncet 3D Tablet contains a decongestant, it may increase heart rate and blood pressure, which can be problematic in patients with cardiovascular disease.
ONCET 3D TABLET 10'S is a combination medicine used to relieve symptoms of common cold such as runny nose, stuffy nose, sneezing, and fever.
ONCET 3D TABLET 10'S is used to relieve symptoms of the common cold and allergies, such as runny nose, stuffy nose, sneezing, watery eyes, and fever.
ONCET 3D TABLET 10'S is a combination of three medicines: Cetirizine, Phenylephrine, and Paracetamol. Cetirizine is an antihistamine that works by blocking the effects of histamine, a chemical substance that causes allergy symptoms. Phenylephrine is a decongestant that works by constricting the blood vessels in the nasal passages, thereby relieving stuffy nose. Paracetamol is an analgesic and antipyretic that works by reducing pain and fever.
The common side effects of ONCET 3D TABLET 10'S include drowsiness, dizziness, headache, dry mouth, nausea, and vomiting.
ONCET 3D TABLET 10'S can be taken with or without food. However, taking it with food may help to prevent nausea.
The recommended dosage of ONCET 3D TABLET 10'S is one tablet every 4-6 hours as needed for adults and children over 12 years of age. Do not take more than 4 tablets in 24 hours.
It is important to consult a doctor before taking ONCET 3D TABLET 10'S during pregnancy or breastfeeding.
ONCET 3D TABLET 10'S can interact with certain other medications, such as antidepressants, antihistamines, and pain relievers. It is important to consult a doctor before taking ONCET 3D TABLET 10'S if you are taking any other medications.
Store ONCET 3D TABLET 10'S at room temperature, away from heat and moisture. Keep it out of reach of children and pets.
If you miss a dose of ONCET 3D TABLET 10'S, take it as soon as you remember unless it is almost time for your next dose. In that case, skip the missed dose and take your next dose as usual. Do not take a double dose to make up for a missed dose.
No, ONCET 3D TABLET 10'S is not addictive.
Drinking alcohol with ONCET 3D TABLET 10'S may increase the risk of side effects such as drowsiness and dizziness. Therefore, it is advised to avoid drinking alcohol while taking ONCET 3D TABLET 10'S.
Yes, ONCET 3D TABLET 10'S can cause drowsiness. If you experience drowsiness, do not drive or operate machinery.
Symptoms of an overdose of ONCET 3D TABLET 10'S may include nausea, vomiting, stomach pain, drowsiness, dizziness, and seizures. If you think you have taken an overdose of ONCET 3D TABLET 10'S, contact a doctor immediately or seek emergency medical help.
ONCET 3D TABLET 10'S contains paracetamol, which is also found in many pain relievers. Taking too much paracetamol can cause liver damage. Consult a doctor before taking any other pain reliever with ONCET 3D TABLET 10'S to ensure you are taking a safe dose of paracetamol.
Oncet 3D Tablet is generally used for the management of allergic conditions such as allergic rhinitis, seasonal allergies, and chronic urticaria (hives). It helps relieve symptoms like sneezing, runny or blocked nose, nasal or throat itching, watery eyes, and allergy‑related skin rashes. The exact range of indications can vary slightly depending on the specific active ingredients in the formulation, so patients should follow the advice of their prescribing doctor.
Oncet 3D Tablet typically contains an antihistamine and may include other agents such as a leukotriene receptor antagonist and/or a decongestant. The antihistamine blocks the action of histamine, a chemical released during allergic reactions, thereby reducing sneezing, itching, and runny nose. A leukotriene receptor antagonist, if present, helps control inflammation in the airways by blocking leukotrienes. A decongestant component, when included, constricts blood vessels in the nasal passages to reduce congestion. The combined effect is improved control of allergy symptoms.
Oncet 3D Tablet is primarily intended for allergic conditions, not for viral infections such as the common cold or influenza. Some symptoms may overlap, such as runny nose or sneezing, and a doctor may occasionally use similar medicines to relieve these symptoms. However, it does not treat the underlying viral infection. You should not start Oncet 3D Tablet on your own for cold or flu without medical advice, especially because the exact composition and suitability for your health status need to be confirmed.
The safety and appropriate use of Oncet 3D Tablet in children depend on the child’s age, weight, medical history, and the exact active ingredients and strengths in the product. Some antihistamine and leukotriene antagonist combinations are approved for use in certain pediatric age groups, while decongestant components may have age‑related restrictions. Never give Oncet 3D Tablet to a child without explicit guidance from a pediatrician or qualified healthcare professional.
Oncet 3D Tablet may cause drowsiness or reduced alertness in some individuals, depending on which antihistamine and other components are included. Many modern antihistamines are considered non‑sedating or less sedating, but sensitivity varies between patients. Until you know how the medicine affects you, avoid activities that require full concentration, such as driving or operating machinery. If you experience significant drowsiness, inform your doctor, as an alternative regimen may be needed.
Alcohol can enhance the sedative effects of antihistamines and may worsen dizziness, drowsiness, and impaired concentration. If the formulation also contains a decongestant, alcohol may further stress the cardiovascular system. It is generally advisable to avoid or strictly limit alcohol intake while using Oncet 3D Tablet. Discuss your alcohol consumption with your doctor so that they can provide individualized advice based on your overall health and concurrent medications.
The safety of Oncet 3D Tablet in pregnancy depends on its exact active ingredients and the stage of pregnancy. Some antihistamines and leukotriene receptor antagonists have more pregnancy safety data than others, while decongestants may be restricted, especially in the first trimester. Pregnant women should not start or continue Oncet 3D Tablet without consulting an obstetrician or treating physician, who will weigh the potential benefits against possible risks and may suggest safer alternatives if needed.
Certain antihistamines and leukotriene receptor antagonists may pass into breast milk in small amounts, and some decongestants can potentially reduce milk supply or affect the nursing infant. Because Oncet 3D Tablet is a combination product and its exact composition may vary, breastfeeding mothers should seek medical advice before using it. Your doctor will consider the specific formulation, your symptoms, and the age and health of your baby before recommending whether to use this medicine or an alternative.
Commonly reported side effects with similar combination allergy medicines include headache, drowsiness or fatigue, dry mouth, mild gastrointestinal discomfort such as nausea or abdominal pain, and sometimes dizziness. If a decongestant is present, palpitations, increased heart rate, mild elevation in blood pressure, or difficulty sleeping may occur. Most side effects are mild and transient, but if they become troublesome or if you notice chest pain, severe palpitations, mood changes, breathing difficulty, or swelling of the face or throat, seek medical attention immediately.
Caution is required in patients with heart disease, high blood pressure, arrhythmias, or a history of stroke, especially if the Oncet 3D Tablet formulation contains a decongestant, which can raise blood pressure and heart rate. Such patients should not use this medicine without medical supervision. Your doctor may choose a formulation without a decongestant or adjust your treatment plan based on your cardiovascular status and other medications.
If you miss a scheduled dose of Oncet 3D Tablet, take it as soon as you remember, unless it is almost time for your next planned dose. In that case, skip the missed dose and resume your regular dosing schedule. Do not take a double dose to make up for the missed one, as this may increase the risk of side effects. If you frequently forget doses, discuss this with your doctor or pharmacist so they can help you find a more suitable regimen or reminder strategy.
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