Major brand of Promethazine is Phenergan. May & Baker was the first company who owns this brand. so most probably they are the inventor. May & baker invented most of the sufanomides & neurological drugs. they are the pioneer.
Mepergan Forte contains the opioid pain reliever Meperidine, also known as Demerol and the antinausea medication Promethazine also known as Phenergan. Promethazine is from the phenothiazine class of medications. It is often administered in combination with an opioid, like Meperidine, to minimize the nausea that is caused by pain medication. The product Mepergan Forte is taken in oral form and contains both Meperidine for pain, and Promethazine for nausea.
Meperidine Meperidine
norpethidine.
narcotic
yeah
Meperidine (demerol ) dosage of 75mg Intermuscularly every 4 hours as needed.
Who discovered promethazine
Meperidine is generic for Demerol which in fact is very similar to Morphine so what do you think?.................Well if you said Meperidine you are correct. Yes they are all opiates. But Morphine is the father try smoking opium.
no
Does promethazine contain aspirin
meperidine hydrochloride USP
meperidine hydrochloride