###Human: I have cold, headache, sinus problem and breathing difficulty. Please help. ###Assistant: Hello.  It seems this is your chronic problem as you have been suffering for the two years. For the best result, I would advise you to seek consultation from a good homeopathy doctor who can prescribe the correct remedy based on the detailed case history. For the meantime, based on the above short description, I would advise you to take Kali Bichromicum 30c four pills twice a day for five days. Do not eat or drink 30 minutes before or after taking this remedy. Avoid taking a lemon, strong coffee, raw onion, and raw garlic until you take this remedy. Kindly report back in 10 days.