hello and welcome to HealthcareMagic forum.
Could you please specify ypur thyroid complaint, whether you are suffering from hypo-thyroidism or hyper-thyroidism? And how long have you been suffering from it?? If you say that your high blood pressure
started as a result of your thyroid complaint, then its most likely to be as a result of hyperthyroidism
. Based on this, I would advise you to restrict your intake of energy drinks like Redline or Redbull, since they are high in caffeine. I wont tell you to stop drinking it altogether, but consume minimally, in small sips (instead of gulping it down) and do not consume more than one a day under any circumstances.
Best wishes and regards.