This itching could be an allergic reaction to an active ingredient, dye, or filler in the supplement. Sometimes, high doses of certain nutrients, like niacin, can also trigger itching. Since antihistamines haven't provided relief, I recommend temporarily stopping the supplement and consulting your healthcare provider. They can help safely identify the exact cause. Please seek immediate medical care if you experience any swelling, hives, or difficulty breathing.

Itching with rashes and redness all over the body may indicate an allergic reaction, infection, or skin condition. You should consult a dermatologist for proper evaluation and, in the meantime, avoid scratching, use gentle skin care, and keep the skin moisturised.

Both Montair LC and Allegra-M help manage allergies. They both contain montelukast, but their allergy-fighting antihistamines differ. Montair LC contains levocetirizine, which can sometimes make you feel a bit sleepy. Because of this, it is usually best taken in the evening before bed. Allegra-M contains fexofenadine, which is a non-drowsy antihistamine, making it suitable to take either in the morning or evening. You should take whichever one your doctor prescribed once daily, with or without food. Please follow your doctor's specific guidance for your treatment.

Swelling after a bee sting is common and usually due to a local allergic reaction. Apply a cold compress and keep the affected area clean to help reduce swelling and pain. Avoid scratching or pressing the area, as it may worsen irritation. Seek medical care immediately if swelling spreads, becomes severe, or if you develop breathing difficulty.

It is very common for daily antihistamines like Allegra (fexofenadine) to cause dry nasal passages, which can lead to sinus irritation and a localized headache above your eye. Since your Covishield vaccine was a week ago, mild vaccine side effects would typically have resolved by now. The lack of relief from paracetamol and ibuprofen also points toward sinus pressure from dryness. Please try using a simple saline nasal spray to moisturize your nostrils and drink plenty of fluids. Since your headache is persistent, it is best to consult your doctor to rule out any other sinus issues or post-vaccine concerns.

Chronic nasal congestion often leads to mouth breathing, which can cause saliva to pool and look like frothing at night. The nasal redness is likely from rubbing. The abdominal pain could be a mild reaction to Allegra (fexofenadine) or Sinarest, particularly if taken without enough food, or from swallowing excess mucus. Please keep him hydrated and comfortable. I highly recommend visiting his pediatrician to safely investigate these symptoms and review his medicines.