I Have Severe Dry Skin. In Winter My Face Skin

I have severe dry skin. In winter my face skin and specialy lips started to craking. 2 years ago my darmatologist suggested me to take Beco zinc for 2 monts. But I didn't take it. Because I always try to avoid taking medicines. But now in this winter my problem is going severe. What should I do?? Should I start to take Becozinc?? Please suggest me.