Yep, the liquid is much slower acting - if you think about it, the inhaler sends the needed medicine straight to the lungs, rather than having to have a much higher dose that goes via your stomach first, gets absorbed, then shipped around your body to reach your lungs.
It's worth visiting the Asthma UK site as it's really very useful. There's also a helpline with trained asthma nurses on there who may be able to talk you through strategies on how to get him to take his inhaler properly. I would also get him booked in to see your surgery's asthma nurse, as they can watch him taking the inhaler to make sure his technique is effective at getting the medication into his lungs.
The really important thing is to familiarise yourself with what to do in an attack (i.e. when the inhaler isn't touching it). I'll copy and paste here, but it really is worth reading the site properly:
The following guidelines are suitable for both children and adults and are the recommended steps to follow in an asthma attack:
- Take your reliever inhaler (usually blue), immediately
- Sit down and ensure that any tight clothing is loosened. Do not lie down
- If no immediate improvement during an attack, continue to take one puff of your reliever inhaler every minute for five minutes or until symptoms improve
- If your symptoms do not improve in five minutes ? or you are in doubt ? call 999 or a doctor urgently
- Continue to take one puff of your reliever inhaler every minute until help arrives
You are having an asthma attack if any of the following happen:
- Your reliever does not help symptoms
- Your symptoms are getting worse (cough, breathlessness, wheeze or tight chest)
- You are too breathless to speak, eat or sleep
Do not be afraid of causing a fuss, even at night. If you are admitted to hospital or an accident and emergency department because of your asthma, take details of your medicines with you.
After an emergency asthma attack:
- Make an appointment with your doctor or asthma nurse for an asthma review, within 48 hours of your attack
- You will also need another review within one or two weeks after your asthma attack to make sure your symptoms are better controlled
Do not ignore worsening symptoms
Most people find that asthma attacks are the result of gradual worsening of symptoms over a few days.
If your asthma symptoms are getting worse do not ignore them! Follow your personal asthma action plan. If symptoms continue to get worse make an urgent appointment to see your doctor or asthma nurse. Quite often, using your reliever is all that is needed to relieve your asthma symptoms when you start to have an asthma attack. At other times, symptoms are more severe and more urgent action is needed.