🔴DEFINITION

🔶Molality =

Molality is defined as the “total moles of a solute contained in a kilogram of a solvent.”

🔶Molarity=

Molarity is defined as the "number of moles of solute per liter of solution."

🔶Capsule=

Capsules are solid dosage forms in which one or more medicament or inert substances are enclosed within a small shell generally prepared from gelatin.


🔶Tablets=

Tablets may be defined as compressed solid unit dosage form of medicament or medicaments with suitable excipients.

🔶Normality

 is a measure of concentration equal to the gram equivalent weight per litre of solution. 

🔴 DEFINITION

🔶Histamine =

Histamine a compound which is released by cells in response to injury and in allergic and inflammatory reactions, causing contraction of smooth muscle and dilation of capillaries.

🔶Histamine agonist =

A histamine agonist is a drug which causes increased activity at one or more of the four histamine receptor subtypes.

🔶Amines=

Amines an organic compound derived from ammonia by replacement of one or more hydrogen atoms by organic groups.

🔶Vaccines =

Vaccines are the antigenic material consisting of the whole microorganisms or one of its products.

🔶Erosion corrosion =

Erosion is mechanical process and corrosion is a electro chemical process. They combine in a situation to protect metal from the corrosion.

🔴 MECHANISM OF ACTION 🔴

📌 HISTAMINE

▪Histamine is an organic nitrogenous compound involved in local immune responses, as well as regulating physiological function in the gut and acting as a neurotransmitter for the brain, spinal cord, and uterus.
▪ Histamine is involved in the inflammatory response and has a central role as a mediator of itching.
▪As part of an immune response to foreign pathogens, histamine is produced by basophils and by mast cells found in nearby connective tissues.
▪Histamine increases the permeability of the capillaries to white blood cells and some proteins, to allow them to engage pathogens in the infected tissues.
▪ It consists of an imidazole ring attached to an ethylamine chain; under physiological conditions, the amino group of the side-chain is protonated

📌 histamine exerts its effects primarily by binding to G protein-coupled histamine receptors, designated H1 to H4