+12 M4 Pill References. This medicine is known as mirtazapine. Web details for pill imprint m4 drug mesnex generic name mesna imprint m4 strength 400 mg color white shape elliptical / oval availability prescription only pill classification.

It belongs to a class of drugs known as opioids. Web details for pill imprint m4 drug mesnex generic name mesna imprint m4 strength 400 mg color white shape elliptical / oval availability prescription only pill classification. The combined oral contraceptive pill is a type of contraception (birth control).