Given her symptoms, sinus findings, and the lung hyperinflation on X-ray, we should consider cough-variant asthma or reactive airway disease, often flared by sinus inflammation. Since antihistamines and mucolytics aren't helping, the next best step is a pediatrician visit. They may suggest a trial of inhaled bronchodilators or low-dose inhaled corticosteroids to help her airways relax, alongside managing the sinus issue.

A heart-shaped tongue can indeed indicate a tongue-tie. This is very common and easily manageable, so please try not to worry. I recommend having your pediatrician or a lactation consultant evaluate his latch and feeding. Regarding his gas, since he is already taking Yamoo (lactase) and Mucolite (ambroxol), it is best to avoid adding Coliza drops or gripe water without consulting his pediatrician first. Mixing multiple supplements can upset a one-month-old's delicate stomach, and some gripe waters contain ingredients not suitable for newborns. Gentle tummy massages or bicycling his legs can safely help relieve his gas in the meantime.

For your sweet 15-month-old baby weighing 8 kg, the typical dose of Mucolite syrup (which contains ambroxol) is usually 1.25 ml to 2.5 ml, given twice daily. However, because infant dosing must be highly precise, please consult your pediatrician to confirm the exact amount. Mucolite helps by thinning mucus to make it easier to clear, but it may not be enough on its own. A cough is a symptom of an underlying cause, such as a common cold or allergy, which requires a proper diagnosis. Please have her evaluated by a doctor to ensure she receives the most effective treatment.

The best way to manage a dust allergy is to minimise exposure by cleaning your home regularly and using an air purifier. Staying well-hydrated and rinsing your throat with warm salt water may help loosen and clear the mucus. If your symptoms persist or worsen, it is advisable to consult your doctor for proper evaluation and treatment.

Mucolite drops contain ambroxol, which helps thin mucus. For a 6-month-old baby weighing 7 kg, a typical dosage is often around 0.5 ml to 1 ml of pediatric drops (7.5 mg/ml) twice daily. However, because infants are highly sensitive, it is extremely important to consult your pediatrician before starting this medication. They will calculate the exact safe dose and examine her to ensure her chest is clear. For now, keeping her well-hydrated and using saline nasal drops can help her breathe more comfortably. Please have her evaluated by a doctor soon.

Frequent watery stools and colic-like crying can indeed be side effects of cephalexin, as antibiotics can temporarily upset a baby's delicate gut flora. Ambroxol (Ambroxyl mucolite drops) can also sometimes cause mild stomach irritation. Please do not stop breastfeeding; your breast milk is vital to keep him hydrated and help his gut heal. I highly recommend contacting your pediatrician to evaluate his symptoms. They can determine if he needs a probiotic or if his medications need to be adjusted.