Any drug interactions between doxycycline monohydrate and nicazel (both for acne)?

Yes: see below: Ask your doctor before using Doxycycline together with multivitamin with minerals. Taking these medications together can make it harder for your body to absorb doxycycline, possibly making it less effective. If you use both medications, take them 2 to 3 hours apart. Source: www.Drugs.Com. Nicozel is a MVI plus minerals combo. Best wishes.

You can check: You can use a drug interaction checker whenever you have questions about drug-drug interactions or drug - food interactions. Here is 1 option (Drugs.Com): https://www.drugs.com/drug_interactions.php Your pharmacist is also a good source of info.