Since your four-month-old's symptoms haven't improved after a week of Zyrtec and Ascoril LS, it is very important to consult your pediatrician before trying new medications. For a baby this young, safe home care includes using saline nasal drops to clear congestion and running a cool-mist humidifier in their room. Ensure they get plenty of fluids through frequent breast milk or formula feeds. Please avoid any over-the-counter cough remedies without direct medical guidance, as babies' airways are highly sensitive.

A persistent dry cough that is not improving may be related to conditions such as Bronchitis, Allergic Cough, or throat and airway irritation. Medicines like Ascoril D Plus Syrup, Monticope Tablet, and nebulization are commonly used to control cough and airway inflammation, but sometimes it may take a few days to show improvement. You can also try drinking warm fluids, taking steam inhalation, and avoiding dust, smoke, and cold foods. If the cough continues for more than 2-3 weeks or worsens, revisit your doctor for further evaluation to identify the exact cause and adjust the treatment.

Since he is already taking Azibact (azithromycin) and Ascoril, please ensure he completes the prescribed course. Continue the steam inhalation, encourage plenty of rest, and keep him well-hydrated with warm fluids. You can monitor his temperature and oxygen levels at home. If his cough worsens, or if he develops any difficulty breathing, please consult his doctor promptly. For now, continuing this supportive care and keeping him comfortable is the best step forward.

Please do not give him Azee (azithromycin) without consulting his pediatrician first, as antibiotics are only for bacterial infections. More importantly, please stop giving Piriton CS, Sinarest AF, and Ascoril D together. These medications contain overlapping ingredients, which can be unsafe and cause an accidental overdose for a 3-year-old. Since he has a worsening cough and a new fever a week after his MR vaccine, it is best to have him evaluated by his pediatrician. They will safely check his chest and prescribe the correct medications and dosages for his weight.

Please do not give him Piriton CS, Ambrolite S, or Ascoril D without consulting his pediatrician first. These medications contain active ingredients like cough suppressants (dextromethorphan), bronchodilators (salbutamol), or mucolytics (ambroxol) that require precise dosing and professional evaluation for a three-year-old. For now, keep him comfortable and hydrated with warm fluids, and use a cool-mist humidifier in his room to help soothe his airways. Please have him examined by his doctor to ensure he receives the safest and most effective care.

Looking at your options, none of these specific medications are designed to directly treat a sore throat. Ascoril LS (levosalbutamol, ambroxol, and guaiphenesin) is for chesty coughs. Relent Plus (ambroxol and cetirizine) and Hicet-DC (cetirizine and phenylephrine) are meant for allergies and congestion. Taking them now will not provide much relief. Instead, I gently recommend soothing home remedies like warm salt-water gargles and staying well-hydrated. If your throat pain worsens, please consult a healthcare professional for a suitable treatment.