I'm planning to follow the skincare routine as my family doc suggested: iglow face wash - [specify when you plan to use it] omnifade serum - 8 pm oryza cream - 8 am & 8: 02 pm truderma gel - 8: 02 am & 12 pm additionally, i'm going to take cap doxycycline 100 mg, one capsule after dinner for 14 days, as per your prescription. However, i'd like to be transparent about my existing medication: thyroxine sodium tablets - 25 mg every morning before breakfast. Metformin hydrochloride sustained-release tablets - 500 mg after dinner. Could you please advise if there could be any interactions or side effects by combining these medications with the skincare routine recommended?