Mild and deadly? Some contradiction in terms there...
My attacks are of the 'Help me, I'm having a heart attack!' kind. I have suffered from these since 1976/77 and no trigger has yet been identified, no treatment works except treating the symptoms with benzodiazepines (alprazolam as preventative; bromazepam, clonazepam or diazepam are fastest acting so are useful to have around for DURING an episode.) They tried to replace the benzos with SSRIs but they only made me 100 times worse and made me totally anxious 100% of the time, bringing on daily panic attacks, sometimes twice or thrice. I've been through the mill; self-medicating to a stupid degree when I felt my medication was not sufficient, leading to a spell in rehab. Benzo withdrawals are so dreadful that I was hallucinating, feeling electric shocks, and being under the impression that I was merely a cartoon character - AND not getting a wink of sleep for 21 days solid. Madness.
Mild yes, deadly, no - I never knew anyone die of a panic attack, even though I myself can not be convinced, during an attack, that I am NOT dying. And all the while being quite aware that it IS 'only' a panic attack. It's one of those things. You KNOW you're not kicking that bucket, but nothing and nobody can tell you that you're not. 12-18mg bromazepam later, given 10-20 minutes, and I'm fine again. It is benzodiazepine WITHDRAWALS that are deadly. Many, many people who took less than I have died trying to come off benzos without the proper medical supervision.
The beauty of bromaz, best brand LEXILIUM by Alkaloid/Roche, is that, though one of the weaker benzos according to the tables, it gives you the fastest effect of them all and the finest calm sedation in the hour or two after the episode. My prescribed dosage of 2.5mg alprazolam/day is just not enough to keep me completely free of these dreadfully disabling attacks. And my doctor wants to reduce that even further, even though I have told her straight that course of action is a recipe for disaster because all I will do, and I KNOW this, is to order up 500 x 2mg alprazolam from the internet to ensure a lasting supply (and the temptation to over-indulge again.) My rehab for poly-substance dependence advised total abstinence from all mind-altering substances; however, that appears not to be an option for me, and I use 80mg OxyContin, (I have a spondylo-arthritis), 1050mg carisoprodol, 2.5mg (often more and a few other benzos too) alprazolam/day, and one or two nights a week I'll need 15mg Flormidal (midazolam) or 1-2mg Rohydorm (flunitrazepam) for sleep. The Rohydorm or Rohypnol, whichever is prescribed, has the great advantage of negating the need for a morning alprazolam due to its very long half-life for a hypnotic drug. I find that although midazolam gives a quicker onset of sleep, flunitrazepam gives a better QUALITY of sleep and the benefit just mentioned.
DEADLY they may feel, but I haven't succumbed to an attack in 30 years now; it's merely the phobia, thanatophobia, that this condition of mine gives me. Just don't ever try to stop using this class of drug suddenly, or deadly it may well be.
Gaucho