So sorry to hear that. Everything does have its risks, but unfortunately, doctors do a very poor job of describing those risks.
A
single 25 mg. dose of Promethazine, also known as Phenergen. It's classified as an anti-cholinergic drug, which blocks acetylcholine receptors from uptaking acetylcholine. These receptors are located throughout the body, and concentrated in certain parts like the gut, the brain, and the inner ears. Here's a just a partial listing of the potential side effects (I bolded the ones I experienced). -- Notice they put "ringing in the ears" under the "less serious" category. Aaargh!
Possible side effects
They may include an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Also the most possible side effects include:
twitching, or uncontrollable movements of your eyes, lips, tongue, face, arms, or legs;
tremor (uncontrolled shaking), drooling, trouble swallowing,
problems with balance or walking;
feeling restless, jittery, or agitated;
high fever, stiff muscles,
confusion, sweating, fast or uneven heartbeats, rapid breathing;
feeling like you might pass out;
seizure (convulsions);
pale skin, easy bruising or bleeding, fever, sore throat,
flu symptoms;
decreased night vision, tunnel vision, watery eyes, increased sensitivity to light;
hallucinations,
agitation;
nausea and stomach pain, skin rash, and jaundice (yellowing of the skin or eyes);
urinating less than usual or not at all;
joint pain or swelling with fever, swollen glands, muscle aches, chest pain, vomiting,
unusual thoughts or behavior, and patchy skin color; or
slow heart rate, weak pulse, fainting, slow breathing (breathing may stop).
Less serious include:
dizziness, drowsiness,
anxiety;
blurred vision, dry mouth, stuffy nose;
ringing in your ears;
weight gain, swelling in your hands or feet;
impotence, trouble having an orgasm; or
constipation.