A toner can be a lotion.
Tonic is a concept that comes from the Latin word tonĭcus . The first meaning mentioned by the Royal Spanish Academy ( RAE ) in its dictionary refers to that which strengthens, reinforces or grants vigor .
For medicine , a tonic is a substance that allows the body to function properly or that contributes to the person having greater energy . A tonic, therefore, encourages the excitement of organic activities.
Types of toners
It is possible to recognize different kinds of tonics. Muscle tonic , for example, helps increase muscle tone. There are also hair tonics , digestive tonics and cardiac tonics , among others.
Cardiac tonics, generally called cardiotonics , are steroid-type substances that generate an increase in the frequency, contractility and excitability of myocardial fibers. It is possible to speak of two types of cardiac tonic: cardenolide , which shows a monounsaturated lactone of five atoms in its structure ; and bufadienolide , which has two six-atom unsaturations in the lactone of its structure.
Cardiotonic substances
Although cardiac tonics are mainly found in plants, the proportion is very restricted; Two families in which it is possible to find them are the Asclepiadoideae and the Apocynaceae . It also appears in certain animals, especially amphibians but also in several mammals.
Cardiac tonics are water soluble. Regarding their activity, they manage to inhibit the sodium-potassium pump (or Na/K-ATPase Pump ), an integral membrane protein that is essential in the structure of certain cells, and whose task is to transport sodium and potassium, ions inorganic, between the cytoplasm and the extracellular medium.
This process generates an increase in calcium and sodium inside the muscle cells , which in turn results in a growth in the mechanical efficiency of the heart muscle and the force with which it contracts.
The most used cardiac tonic in the pharmaceutical industry is called Digoxin ; It is administered orally to treat heart failure (the heart is not able to pump adequate volumes of blood ), especially in cases in which arrhythmias and atrial fibrillation are also seen. Its control is very important to warn of potential interactions, although this does not mean it is a dangerous drug ; On the contrary, since medicine began to use it, it has made considerable progress in curing the aforementioned disorder.
Tonic water is a drink that can be used to prepare gin and tonic.
The bitter tonic and other drinks
Tonic water is a carbonated soft drink that is flavored with quinine . This alkaloid, extracted from cinchona, has tonic qualities. Tonic water is characterized by its bitter taste .
It is known as bitter tonic , on the other hand, to the alcoholic drink that is also called bitter . This drink is usually considered a digestive tonic.
a lotion
Among cosmetic products, the lotion that is used to purify the skin is called tonic. Previously, a toner was usually applied as a preparation for the use of moisturizing creams or other products.
Nowadays, in any case, creams and other cosmetic products are usually used directly since their benefits have increased.
The term tonic in linguistics and geology
The tonic accent is one that leads to raising the tone. The stressed syllable in a word, on the other hand, is known as a stressed syllable . According to spelling rules, the tonic accent sometimes coincides with the orthographic accent (the accent ).
In the field of geology , finally, the first period of the Neoproterozoic Era is called the Tonic period . It began 1 billion years ago and lasted approximately 150. During this period, the phenomena took place that led to the supercontinent Rondinia, in which many of the emerged parts of the Earth were located, dissolve.