it would really help if আপনি answered

Okay, I'm answering...try not to use your voice as much and keep a glass of water (or preferred liquid, although refrain from whiskey it will burn) nearby to quench your sore throat.

Sore throat doesn't really give me much to go on to be honest.

For pain আপনি can try willow bark (come in pills অথবা powder from health খাবার stores)
For flu/colds - লেবু stew, boil 5 lemons cut in half in water, allow to cool, মাছ lemons out, scoop out inside of লেবু and put the rind for other use (compost heap is best) tie in muslin, simmer in water again, add cinnamon, sugar অথবা honey (whichever আপনি prefer) and simmer until boiling. If আপনি like lumps, untie muslin and allow the লেবু to fall into stew, if আপনি like it smooth, dispose of লেবু bits appropriately. Drink while warm. it's নিরাপদ to freeze and defrost in the microwave for later use too :)

If you're alway sick i suggest boosting your immune systmer, healthy eating, regular excersise and taking vitamins each দিন will keep the doctor away so they say XD. Cod liver oil (which i mash up and mix with জাউ and honey for breakfast, eating at least one orange, আপেল অথবা bananna a day, and if your vegan/vegetarien, green vegetavbles. Spinach, broccoli, beans etc.
All can boost your immune system.