Progesterone, which regulates cyclical changes in the endometrium of the uterus and maintains a pregnancy Each dose is released by pressing the toparlak of the inhaler. This type of inhaler is quick to use, small and convenient to carry. It needs good co-ordination to press the canister and breathe in https://www.fcc.gov/fcc-bin/bye?https://tr.wikipedia.org/wiki/Vitamin