I'm really worried about my dad. He was diagnosed with acute bronchitis back in January 2020, and he's also got diabetes. He's been using this Foracort 400 inhaler, started with 2 puffs twice a day, and now it's down to once in the morning and evening. The thing is, he's been using it consistently ever since. I'm just wondering, should he keep using it indefinitely? And are there any side effects we should be aware of?