Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain pimples can occur due to causes like Clogged pores,oily skin,hormonal imbalances,bacterial infection,inflammation,excess sun exposure etc. On the other hands dark or black spots left on face seems to be due to Post Inflammatory Hyperpigmentation that occurs due to pimples.. Minoz OD is Minocycline and is an antibiotic and is commonly used to treat acne while Krimson 35 is an hormone replacement therapy and is generally givento patients with hormonal imbalances and as acne is also caused at times due to hormonal imbalances, therefore it can be given to treat acne.. Krimson 35 comes in a pack of 21 tablets that has to be daken from first or second day of your menstruation cycle and continued till 21 days by taking one pill daily.. You should however consult a Dermatologist and get evaluated as your tests are normal then it will be better to take topical acne medications and other treatments but avoid taking hormone replacement therapy.. He can advise you to wash your face with Salicylic acid containing facewash.. Apply topical ointment containing Clindamycin and Benzoyl Peroxide.. Apply retinoids like Adapelene gel in thin layer on pimples at night time.. Do cool compresses over face.. Exfoliate your face twice a week to unclog the pores and remove dead skin.. You can also apply a sunscreen lotion when exposed to sun.. Oral Medication like antibiotics like Clindamycin or Minocycline and retinoid like Isotretinoin can also be advised Avoid oily food.. For dark spots apply creams containing Kojic acid, glycolic acid and arbutin.. Vitamin E gel can be applied at night. Azelic acid preparations are helpful.. You can also go for treatment like Microdermabrasion and chemical peeling.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.