Hello,yes you can take medicine along with chemical peel because
chemical peel will help you to reduce acne from outside by removing excess sebum, improving open pores and dead skin layer removal while
medicines will control your excess oil production, treat root cause of acne,from inside.
But yes you need to stop topical application (cream) recommended for acne as it may irritate your skin.
Next Steps
Before doing anything of your own, you should consult cosmetologist or dermatologist as they will assess your skin and advice you what is good for you as every person is different so treatment varies.
Health Tips
Use gel based ,non-comedogenic products(e.g. cleanser,alcohol free toner, moisturiser and sunscreen).
Drink plenty( min. 7-8 glasses )of water to detoxify your body.