Brief Answer:
relax, calm down, first 3-4 hours is the most important phase..

Detailed Answer:
Hello XXXXXXX welcome back,

I've gone through your query and understand your concern..

With all those previous attacks mentioned in your previous queries, and the fact that A&E didn't find anything significant, means your simply having another panic attack..

Please calm down, sit down, close your eyes and relax for a minute..take deep breaths, inhale deep and exhale slowly from your mouth- continue it for next 10 minutes and observe how you stay..

Yes, you can simply take another Lansoprazole right away and wait for next 15 minutes, if still feeling the same then take a Tab PARACETAMOL 650 mg after some food..

This time after this settles down, I'd strongly recommend you for a detailed visit with a Psychiatrist for a detailed clinical check-up as well as a detailed discussion for cognitive behavior therapy and other relaxation methods(it's very effective in relieving this anxiety attacks)

With all these being said, please note that if this doesn't settle down within the next hour/ gets worsen then you should visit A&E again (but not likely for a heart attack but for acute anxiety and panic attack because it's an emergency medical condition too)

Let me know how you stay in the due course..

Take Care
Kind Regards

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