What is the primary pharmacological mechanism of Guanfacine in psychiatric treatment?

Guanfacine is a selective agonist of the alpha-2A adrenergic receptor. It works by limiting the production of noradrenaline in the brain, which helps manage symptoms of mania and improves sleep quality.

How does the receptor selectivity of Clonidine compare to Guanfacine?

While both are alpha-2 agonists, Clonidine is less selective and also acts on imidazoline receptors. This dual action makes Clonidine a more potent antihypertensive agent but often results in more significant side effects compared to the more specific action of Guanfacine.

What is the clinical significance of Dexmedetomidine in treating agitation?

Dexmedetomidine is a highly selective alpha-2 adrenergic agonist used to treat psychomotor agitation, particularly in patients with bipolar disorder. In some regions, its use is restricted to intensive care settings due to its potent sedative effects and injectable administration.

Guanfacine. Clonidine. Gentle psychiatric drugs based on adrenaline alpha 2 receptors. Alpha-2 adrenergic receptor, alpha-2 (α2) adrenergic receptor

Guanfacine. Clonidine. Gentle psychiatric drugs based on adrenaline alpha 2 receptors. Alpha-2 adrenergic receptor, alpha-2 (α2) adrenergic receptor
The positive aspect of adrenaline alpha 2 receptors is that they also have an analgesic effect against pain.
Some types of drugs acting on adrenaline alpha 2 receptors are used in veterinary medicine as an anesthetic (Medetomidine, Xylazine). Their use in humans as an anesthetic is in the stage of scientific experiments as a drug under the working name 4-NEMD.

Guanfacine
Guanfacine strongly limits the production of noradrenaline in the brain, thereby limiting mania and lowering blood pressure. It has an excellent effect in promoting sleep. It is best to take it just before bedtime.
In the Czech Republic and Slovakia, guanfacine was once sold by the pharmaceutical company Takeda under the commercial name INTUNIV. They still have a valid license to sell it, although it is currently not available in the Czech pharmacy supply chain. It definitely makes sense to ask this company if and under what conditions it is
able to supply guanfacine individually. The company also has a branch in the Czech Republic.

Dexmedetomidine
Dexmedetomidine is, in principle, an agonist of adrenaline alpha-2 receptors intended for bipolar patients, especially for symptoms of agitation . The word agitation has a specific meaning in psychiatric terminology; it is a state of restlessness.
This drug has a wide range of uses. Unfortunately, in the Czech Republic or Slovakia, it has only limited use and only in the intensive care unit, which makes the use of this drug in the psychiatric department practically unrealistic, although it would be most applicable there. What a pity.
Dexmedetomidine is provided exclusively in injectable form .

Clonidine
Clonidine acts as an agonist on adrenaline alpha-2 receptors and on imidazoline receptors, which makes it probably the most potent drug for lowering blood pressure. Agonism on imidazoline receptors also accounts for the reduction of blood pressure, but they have no effect on the psyche. Guanfacine is better for psychiatric patients because the side effect of lowering blood pressure is not as great and it acts more specifically.
I managed to find clonidine on the black market, but I cannot recommend such an e-shop .