How do pastes and ointments differ from action point of view?
How do pastes and ointments differ from action point of view?
1 . Pastes contain large amount of finely powdered solids such as starch,zinc oxide,calcium carbonates etc. Ointments contain medicaments which are generally dissolved / suspended / emulsified in the base. Pastes form a protective coating to the area where it is applied.
What is the difference between ointment or cream?
A cream is a preparation of a medication for topical use that contains a water base. It is a preparation of oil in water. An ointment is a preparation of a medication for topical use that contains an oil base. While ointments have a higher concentration of oil, creams have a higher concentration of water.
How are pastes prepared and administered?
PASTES Pastes are usually prepared by incorporating solids directly into a congealed system by levigation with a proportion of base to form paste like mass. Contains high percentage of insoluble solid (usually 50% or more) which are finely dispersed into a suitable vehicle.
What are pastes in pharmacy?
In pharmacology, paste is a basic pharmaceutical form. It consists of a fatty base (e.g., petroleum jelly) and at least 25% of a solid substance (e.g., zinc oxide). Pharmaceutical pastes are typically intended for external application to the skin. They are usually thick and do not melt at physiologic temperatures.
What are the methods of preparing ointments?
Procedure for Preparation:
- Melt the stearyl alcohol and white petrolatum on a hot plate.
- Heat this mixture to 70°C.
- Dissolve remaining ingredients in water and heat the solution to 70° C.
- Add the oleaginous phase slowly to the aqueous phase, stirring constantly.
- Remove from heat and stir the mixture until it congeals.
What is the function of zinc oxide?
ZINC OXIDE (zingk OX ide) is used to treat or prevent minor skin irritations such as burns, cuts, and diaper rash. Some products may be used as a sunscreen.
Why is paste stiffer than ointments?
Why is paste stiffer than ointment? Pastes are usually stiffer because they contain a high proportion of powdered ingredients.
Do Pastes contain water?
Background: Pastes are semisolid stiff preparations containing a high proportion of finely powdered material. Petrolatum, a highly lipophilic, water-immiscible vehicle surrounds the powder particles preventing any absorption of water or exudates.
What are creams in pharmacy?
Creams are semisolid dosage forms containing more than 20% water or volatile components and typically less than 50% hydrocarbons, waxes, or polyols as vehicles. They may also contain one or more drug substances dissolved or dispersed in a suitable cream base.
What is a Pastes?
A paste is nothing more than text quite literally pasted onto a website whereupon it receives its own unique URL so that it can then be shared with others who may want to view the paste. The contents of a paste could be anything – a recipe, a block of code or of particular interest here, a dump of breached accounts.
What’s the difference between ointment, cream, gel and paste?
Ointment is a stiff, sticky preparation of oils and/or fats, usually containing medication. It is thicker than cream. Paste is a mixture of powder and ointment which allows the skin to breathe through the ointment.
What’s the difference between an ointment and an oil?
On the other hand, an ointment is based in oil. It means it is a preparation of water in oil. In order to illustrate this difference, you have to look at the specific percentage of water and oil content of ointments and creams.
Which is easier to apply cream or ointment?
Creams have a watery base, so they can be applied on larger areas of your skin. If you have a rash over your whole back, a cream might be easier and less messy to apply than an ointment. Ointments have thicker textures and are greasier. So it is difficult to evenly spread them over extensive territories of your skin. 6. Stability On The Skin
Which is thicker a gel or an ointment?
Gels = silica is added to create transparent look to gels. Pastes = Thicker in texture than Gels. They tend to be solid. They are available in many colours. Ointment is a stiff, sticky preparation of oils and/or fats, usually containing medication. It is thicker than cream
Ointment is a stiff, sticky preparation of oils and/or fats, usually containing medication. It is thicker than cream. Paste is a mixture of powder and ointment which allows the skin to breathe through the ointment.
Which is better for your skin ointment or cream?
Essentially, ointments contain high concentrations of oil and are more greasier and stickier. Ointments usually take longer to get completely absorbed into your skin. However, they are great forms of moisturizers. Ointment like petroleum jelly is highly recommended for its healing properties.
What’s the difference between thick cream and thick paste?
Cream – less thick, like a thick oil it is more likely liquid but barely spread on a surface compare to 100% liquid thing
What’s the difference between a paste and a powder?
Pastes are thick, stiff, semisolid dosage form in which s high concentration of insoluble powder substances (20% to 50%) finely dispersed in a fatty or aqueous base [2]. According to USP, Pastes are semisolid preparations of stiff consistency and contain a high percentage (20%–50%) of finely dispersed solids [1].