Hello,
Welcome to HCM,
It is not clear from your question that at what time you use to take milk. In my opinion if you take milk in the morning, you will get less problems. But if you take it at bed time, can create more problems. As you are suffering with asthma, you can be allergic to milk protein also. And if you are allergic to milk protein, then every time you take milk, you will suffer with respiratory problems irrespective of time. The 2nd reason, which can cause problem is poor digestion of milk protein. I want to tell you that as our age advances, our ability to digest milk generally decreases due to poor secretion of enzyme responsible for it, which can cause flatulence & thus aggravate respiratory problems. Thus you should avoid all those foods, which aggravates your respiratory problems.
Wish you good health,

Hello Tanmay,
Welcome to Healthcare magic forum.
Your symptoms are most probably due to allergy to milk proteins.The link between asthma and cows' milk is now increasingly being recognised by patients and doctors.Though still not verified by studies , its believed that milk and dairy products stimulate mucus production in lungs.Infact studies suggest that, along with creating excess mucus production in lungs, milk may worsen asthma due to an undiagnosed milk allergy.
A prime consideration for those with asthma should be the identification and elimination of allergens in foods and in the environment. Although any food is suspect, the ones most likely to trigger asthma are dairy products, eggs, chocolate, wheat, corn, citrus fruits, and fish.
Another possible reason in some cases is allergy to the antibiotic penicillin which is commonly used to treat the cows for infection.If proper precautions are not taken these antibiotics appear in the milk from such cows and when such scientific contaminated milk is consumed it may cause symptoms of allergy like eczema or asthma.
So if you are having a temporal relation with milk consumption and asthma symptoms then please consult your doctor or allergist for appropriate management.

Hope that answers your query.
Wishing you good health.
Regards