Inhoudsopgave
Wat zijn de bijwerkingen van promethazine?
Bijwerkingen: sufheid, slaperigheid, slecht coördinatievermogen, duizeligheid, droge mond, wazig zien en moeilijk plassen. Promethazine vermindert uw reactievermogen.
Hoeveel promethazine mag je innemen?
Dosering Bij overgevoeligheidsverschijnselen: Volwassenen: 50 – 150 mg (2 – 6 tabletten) per dag in verdeelde doses tijdens de maaltijden en voor het slapengaan. In sommige gevallen kan 25 mg (1 tablet) per dag al voldoende zijn.
How do you remove the OH group from an alcohol?
There are two main approaches for this: 1) Treat the alcohol (the OH group) with HCl, HBr, or HI and covert the OH group to H2O+ which is an excellent leaving group and can undergo an S N 1 or S N 2 substitution by the halide ion (Cl–, Br–, or I–).
How to convert alcohols to alkyl halides?
For this, there are alternative methods such as the use of SOCl 2, PBr 3 and converting alcohols to sulfonyl ester like mesylates and tosylates. Both methods are covered in separate posts as there is too much to talk about in one article: Tertiary alcohols work the best for acid catalyzed conversion to alkyl halides.
How do you reduce alcohol to alkane?
Reduction of Alcohols Normally an alcohol cannot be directly reduced to an alkane in one step. The –OH group is a poor leaving group so hydride displacement is not a good option – however the hydroxyl group is easily converted into other groups that are superior leaving groups, and allow reactions to proceed.
How do substituted alcohols react with hydrochloric acid?
2) More substituted alcohols usually react more rapidly with HX: Methyl and primary alcohols are converted to alkyl halides via S N 2 reaction according to the general mechanism shown below.
What is hydroxyzine?
Hydroxyzine is in a class of medications called antihistamines. It works by blocking the action of histamine a substance in the body that causes allergic symptoms. It also works by decreasing activity in the brain. How should this medicine be used? Hydroxyzine comes as capsules, tablets, a syrup, and suspension to take by mouth.
What does hydroxyzine do to histamine?
It also acts as an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of itching, or hives on the skin. Hydroxyzine is used as a sedative to treat anxiety and tension.
What happens if you drink alcohol with hydroxyzine?
Drinking alcohol with this medicine can cause side effects. Get emergency medical help if you have signs of an allergic reaction to hydroxyzine: hives; difficult breathing; swelling of your face, lips, tongue, or throat. In rare cases, hydroxyzine may cause a severe skin reaction.
How long can you take hydroxyzine for anxiety?
If you do not have a dose-measuring device, ask your pharmacist for one. Hydroxyzine is for short-term use only. You should not take this medicine for longer than 4 months. Call your doctor if your anxiety symptoms do not improve, or if they get worse.