Products Rivastigmine is commercially available as capsules, oral solution, and transdermal patch (Exelon, generics). It has been approved in many countries since 1997. Structure and properties Rivastigmine (C14H22N2O2, Mr = 250.3 g/mol) is a phenyl carbamate. It exists in the oral forms as rivastigmine hydrogenotartrate, a white crystalline powder that is very soluble in water. … Rivastigmine
Products The narcotics are a group of centrally acting drugs and substances, which are strongly regulated and controlled by the state respectively by the drug and health authorities. This is primarily to prevent abuse and to protect the population from the undesirable effects and addiction. Certain narcotics – for example, many potent hallucinogens – are … Narcotics Effects and Side Effects
The effect of the first liver passage For a perorally administered pharmaceutical agent to exert its effects at the site of action, it usually must enter the systemic circulation. To do so, it must pass through the intestinal wall, the liver, and part of the circulatory system. Despite complete absorption in the intestine, the bioavailability … First-Pass Metabolism
Introduction Biotransformation is an endogenous pharmacokinetic process that leads to a change in the chemical structure of active pharmaceutical ingredients. The organism’s general goal in doing so is to make the foreign substances more hydrophilic and to direct them to excretion via the urine or stool. Otherwise, they could be deposited in the body and … Metabolism (Biotransformation)
Controlled release from the drug The special design of a drug can be used to achieve delayed, prolonged, continuous, and controlled release of the active ingredient over an extended period of time. This allows the timing, location, and rate of release to be influenced. Galenics Sustained-release drugs include sustained-release tablets, sustained-release capsules, sustained-release granules, and … Retardation
Products Androgens are commercially available as oral tablets and capsules, transdermal gels and transdermal patches, and injectables, among others. Testosterone was first isolated in the 1930s. Structure and properties Androgens generally have a steroidal structure and are related to testosterone. They are steroid hormones that are often present as esters in drugs. Effects Androgens (ATC … Androgens: Steroid Hormones
Symptoms The preliminary stages are fatigue, yawning, difficulty concentrating, headache, mood swings, lethargy, and an increased need for sleep. The actual motion sickness manifests itself acutely in symptoms such as cold sweat, pallor, pale complexion, sensations of warmth and cold, faintness, hyperventilation, rapid pulse rate, low blood pressure, salivation, nausea, nausea, vomiting, and dizziness. Triggers … Motion Sickness
Definition and properties The administration or application of a drug refers to its use on the body. The dosage forms (drug forms) used for this purpose consist of the active ingredients and excipients. These include, for example, tablets, capsules, solutions, syrups, injectables, creams, ointments, eye drops, ear drops, and suppositories. Drugs can be liquid, semi-solid, … Administration
Products Scopolamine is currently sold in many countries exclusively in the form of eye drops. The transdermal patch Scopoderm TTS and other medications are no longer available. In some countries, other medicines containing scopolamine are available, such as Kwells motion sickness tablets and the Transderm Scop transdermal patch. This article refers to peroral use. In … Scopolamine
Products Rotigotine is commercially available as a transdermal patch in various potencies (Neupro). It was approved in many countries in 2006 as the first TTS for Parkinson’s disease therapy. Structure and properties Rotigotine (C19H25NOS, Mr = 315.5 g/mol) is an aminotetralin and thiophene derivative structurally related to dopamine. It has a non-ergoline structure and exists … Rotigotine
Products Dopamine agonists are commercially available in the form of tablets, sustained-release tablets, transdermal patches, and injectables, among others. Structure and properties The first active ingredients, such as bromocriptine (Figure), were derived from ergot alkaloids. These are referred to as ergoline dopamine agonists. Later, agents with a nonergoline structure, such as pramipexole, were also developed. … Dopamine Agonists
Products Parasympathomimetics are commercially available in the form of tablets, capsules, solutions, transdermal patches, injectable solutions, and eye drops, among others. Structure and properties Many parasympathomimetics are structurally related to the natural ligand acetylcholine. Effects Parasympathomimetics have cholinergic (parasympathomimetic) properties. They promote the effects of the parasympathetic nervous system, a portion of the autonomic nervous … Parasympathomimetics
