Other breath-activated inhalers are also called dry powder inhalers. These inhalers do not contain the pressurised inactive gas to propel the medicine. You don't have to push the canister to release a dose. Some topical corticosteroids can be bought 'over the counter' without a prescription. For example, for dermatitis, the https://contestalert.in/members/pilottax5/activity/1850896/