From a doctor who treats hypertension (HTN) many times a day:
There are many meds for HTN, and many will begin to work within 2 weeks. However, many of us will prescribe a low dose initially, and ramp up if needed - that may require a couple months to get under control. For example, hydrochlorothiazide (HCTZ - who wants to say the long way??) is one of the top drugs used for HTN, yet a few folks will have adverse reactions and will need to change. So, I would wholeheartedly recommend a longer time interval until re-exam, but for the majority of people, 2 weeks would be enough. Let me also add I have a number of patients that have high BP only when in the office (white coat syndrome), so I always insist they get a machine or check in the store and bring me ample data to help rule in or out.
Regarding lifestyle changes (proper diet, watch salt, lose weight, exercise), most people do NOT comply, and those changes take time to show improvement if they will work at all. We certainly encourage this, and I do have a few patients that have been able to control their BP just fine with these changes, but after 5000 patient visits a year and 11 years in practice, I find them a minority. I certainly understand why some docs don't even mention it much (they should), as they are tired of beating their head on a tree and seeing no result.
To the poster who mentioned the links to stroke, MI, etc., indeed, but it typically takes many years before problems surface, and all those diseases mentioned have many other factors that influence them. I know **** healthy folks who have had all those problems, plus I have known many hypertensives who fall off the radar, are non-compliant, and let their HTN run amok for years and never have anything happen. HTN alone is not directly a problem with flying, but the FAA knows that there are increased risks if left untreated. Interestingly, a strong family history of cardiac disease, smoking, and additive other cardiac risk factors may be more likely to cause these maladies, but the FAA doesn't count them.
Lastly, to the poster who recommended the carotid artery massage trick, I say absolutely not (as do my cardiology and vascular surgery colleagues). While most people would be OK doing that, if one has an undiagnosed non-symptomatic blockage in that artery and they did that, they could invoke a passing out spell or worse (you do NOT need to block both arteries).
Best wishes to your friend,
Carl
Family Practice