Is An Overdose Of Promethazine Syrup Harmful?
You are safe and not intoxicated. Don't induce vomiting.
Detailed Answer:
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You are totally safe and have not exceeded the daily allowed dosage of promethazine. 5ml of syrup contains 6.25 mg of promethazine according to United states pharmacopeia. you took 20 ml syrup, which means you took 25 ml of promethazine. While the recommended dosage is up to 30 mg. So still in safe range.
Dizziness and disorientation is the side effect of the drug, which people feel even with a single dose of 5 ml. It's not a big deal.
This syrup is usually taken for a temporary relief of cough and infection of upper respiratory tract associated with allergic reaction or due to the common colds. You should stop taking promethazine if it is bothering you. Consult a Pulmonologist for proper evaluation and treatment. If you have lower respiratory infection, promethazine is not used for that. So, your doctor will assess and diagnose the case and treat accordingly.
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DR. XXXXXXX HANIF
USA