Buy Drugs Online:
Drugs Information:
Drugs List

Nitrates relieve angina by relaxing vascular smooth muscle and causing vasodilatation.

Nitrates release nitric oxide, which activates a soluble cytosolic form of guanylate cyclase. cGMP formation is increased, leading to venorelaxation with a consequent reduction in central venous pressure (reduced pre-load). With larger doses arterioles dilate and arterial pressure drops. As both arterial pressure and cardiac output are decreased, myocardial oxygen consumption is reduced.

Coronary flow is increased via coronary vasodilatation.

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

See also

Medical conditions associated with nicotinic acid derivatives:

  • Mycobacterium kansasii
  • Tuberculosis, Active
  • Tuberculosis, Latent
  • Tuberculosis, Prophylaxis

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Nasal lubricants and irrigations are saline solutions or gel form. These products are used to treat irritated or dry nasal passages that may be caused by hay fever, cold and other conditions. They are also used after nasal surgery to clean out the inner part of the nostrils.

See also

Medical conditions associated with nasal lubricants and irrigations:

  • Nasal Congestion

Norepinephrine reuptake inhibitors are drugs that block the norepinephrine transporter and inhibit the reuptake of neurotransmitters norepinephrine (noradrenaline) and epinephrine (adrenaline). This causes increased levels of norepinephrine and epinephrine in the synapses, and leads to increased adrenergic transmission.

Norepinephrine reuptake inhibitors may be used to treat conditions such as narcolepsy, fatigue, attention-deficit hyperactivity disorder (ADHD), mood disorders and so on.

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

See also

Medical conditions associated with non-ionic iodinated contrast media:

  • Angiocardiography
  • Aortography
  • Arthrography
  • Body Imaging
  • Cerebral Arteriography
  • Computed Tomography
  • Coronary Arteriography
  • Cystourethrography
  • Digital Subtraction Angiography
  • Endoscopy or Radiology Premedication
  • Gastrointestinal Tract Examination
  • Head Imaging
  • Hysterosalpingography
  • Intra-arterial Digital Subtraction Angiography
  • Intravenous Digital Subtraction Angiography
  • Intravenous Urography
  • Left Ventriculography
  • Myelography
  • Pediatric Angiocardiography
  • Peripheral Angiography
  • Peripheral Arteriography
  • Renal Arteriography
  • Urography
  • Venography
  • Visceral Arteriography

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Neuromuscular blocking agents bind to acetylcholine receptors postsynaptically and inhibit the action of acetylcholine. This blocks neuromuscular transmission and causes paralysis of the muscle.

Neuromuscular blocking agents are used as an adjunct to anesthesia, only when artificial ventilation is available, to produce muscle relaxation in order to prevent movement of muscle during surgery.

See also

Medical conditions associated with neuromuscular blocking agents:

  • Anesthesia
  • Light Anesthesia

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

All nonsteroidal anti-inflammatory agents (NSAIDs) differ in structure but they all have similar antipyretic, anti-inflammatory and analgesic properties.

NSAIDs work by blocking the cyclo-oxygenase (COX) enzyme, so inhibit production of prostaglandins and thromboxanes, which are produced as part of the inflammatory response.

There are two types of COX enzymes, COX-1 and COX-2. COX-1 is expressed in most tissues, including platelets. COX-2 is induced in inflammatory cells when they are activated and the primary inflammatory cytokines (interleukin-1 and tumor necrosis factor alpha). COX-2 enzyme is responsible for production of mediators of inflammation. Most NSAIDs are inhibitors of both isoenzymes. The anti-inflammatory action of NSAIDs is mainly due to inhibition of COX-2, and their unwanted side effects are largely due to inhibition of COX-1.

There can be considerable variation in individual patient response and tolerance to different NSAIDs.

See also

Medical conditions associated with nonsteroidal anti-inflammatory agents:

  • Ankylosing Spondylitis
  • Aseptic Necrosis
  • Back Pain
  • Bartter Syndrome
  • Bursitis
  • Cluster Headaches
  • Costochondritis
  • Cystic Fibrosis
  • Diffuse Idiopathic Skeletal Hyperostosis
  • Dysautonomia
  • Familial Adenomatous Polyposis
  • Fever
  • Fibromyalgia
  • Frozen Shoulder
  • Gitelman Syndrome
  • Gout, Acute
  • Headache
  • Inflammatory Conditions

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Cephalosporins are a group of broad spectrum, semi-synthetic beta-lactam antibiotics derived from the mould Cephalosporium. They are divided into three groups: Cephalosporin N and C are chemically related to penicillins and Cephalosporin P a steroid antibiotic resembles fusidic acid.

The mechanism of action of cephalosporins is the same as penicillins. They interfere with bacterial cell wall synthesis.

Semisynthetic broad-spectrum cephalosporins have been produced by the addition of different side chains, to the Cephalosporin C nucleus.

They are classified according to the chronological order in which they were produced.

Next generation cephalosporins will be the next lot of cephalosporins made, after the fourth generation cephalosporins.

See also

Medical conditions associated with next generation cephalosporins:

  • Pneumonia
  • Skin and Structure Infection

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

See also

Medical conditions associated with non-iodinated contrast media:

  • Computed Tomography

Nasal preparations are products applied in the nose to treat conditions of the nose or nasal symptoms. They include medicines such as nasal steroids, lubricants, antihistamines and decongestants and anti-infectives, used to treat hay fever symptoms, congestion and infections. Nasal preparations are available as sprays, drops, creams, ointments and solutions for irrigation.

See also

  • nasal anti-infectives

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Nucleoside reverse transcriptase inhibitors (NRTIs) are active inhibitors of reverse transcriptase found in retroviruses such as the human immunodeficiency virus (HIV). The different nucleoside reverse transcriptase inhibitors may be activated differently but they have the same mechanism of action. NRTIs are activated generally by phosphorylation to the triphosphate form by cellular enzymes. It then competes with cellular triphosphates, which are substrates for proviral DNA by viral reverse transcriptase. NRTI

See also

Medical conditions associated with nucleoside reverse transcriptase inhibitors (NRTIs):

  • Hepatitis B
  • HIV Infection
  • Nonoccupational Exposure
  • Occupational Exposure
  • Reduction of Perinatal Transmission of HIV

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Beta adrenergic blocking agents prevent stimulation of the beta adrenergic receptors at the nerve endings of the sympathetic nervous system and therefore decrease the activity of the heart. They block sympathetic stimulation of the heart and reduce systolic pressure, heart rate, cardiac contractility and output, so decrease myocardial oxygen demand and increase exercise tolerance.

Beta adrenergic blocking agents are used to treat angina, control abnormal heart rhythms and to reduce high blood pressure. However, non-cardioselective beta blockers can cause significant bronchial constriction and could be harmful especially in patients with respiratory conditions such as asthma or chronic obstructive pulmonary disease.

See also

Medical conditions associated with non-cardioselective beta blockers:

  • Angina
  • Angina Pectoris Prophylaxis
  • Anxiety
  • Aortic Stenosis
  • Arrhythmia
  • Atrial Fibrillation
  • Atrial Flutter
  • Benign Essential Tremor
  • Esophageal Variceal Hemorrhage Prophylaxis
  • Glaucoma
  • Heart Attack
  • Heart Failure
  • Hemangioma
  • High Blood Pressure
  • Hypertensive Emergency
  • Left Ventricular Dysfunction
  • Lithium Tremor
  • Migraine Prevention
  • Mitral Valve Prolapse
  • Parkinsonian Tremor
  • Performance Anxiety
  • Pheochromocytoma
  • Supraventricular Tachycardia
  • Tardive Dyski

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Nasal corticosteroids are very effective in controlling allergic inflammation in the nose. Corticosteroids work on multiple cell types and mediators for example, mast cells, macrophages, leukotrienes and so on, to control inflammation. Nasal steroid sprays are usually first line treatment for nasal symptoms of hay fever or allergic rhinitis.

See also

Medical conditions associated with nasal steroids:

  • Hay Fever
  • Nasal Polyps
  • Nasal Polyps, Prevention
  • Rhinitis

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Natural Penicillins were the first antibiotics used in clinical practice. They are based on the original penicillin- G structure. They inhibit bacterial cell wall synthesis and are generally bactericidal.

Natural penicillins are effective against gram positive bacteria such as staphylococci, streptococci and gram negative bacteria such as meningococci, Treponema, Borrelia and Leptospira.

See also

Medical conditions associated with natural penicillins:

  • Actinomycosis
  • Anthrax
  • Anthrax Prophylaxis
  • Aspiration Pneumonia
  • Bacterial Infection
  • Clostridial Infection
  • Congenital Syphilis
  • Cutaneous Bacillus anthracis
  • Deep Neck Infection
  • Diphtheria
  • Endocarditis
  • Fusospirochetosis, Trench Mouth
  • Joint Infection
  • Leptospirosis
  • Lyme Disease, Arthritis
  • Lyme Disease, Carditis
  • Lyme Disease, Erythema Chronicum Migrans
  • Lyme Disease, Neurologic
  • Meningitis
  • Meningitis, Meningococcal
  • Meningitis, Pneumococcal
  • Neurosyphilis
  • Otitis Media
  • Pneumonia
  • Prevention of Perinatal Group B Streptococcal Disease
  • Rat-bite Fever
  • Rheumatic Fever Prophylaxis
  • Skin Infection
  • Strep Throat
  • Streptococcal Infection
  • Syphilis, Early

Nutritional products include products, which either supplement the nutrition or provide part or all of the daily nutritional requirements. They include intravenous or oral nutrition that can provide all the nutrition. Nutritional products also include supplements for example, iron and other vitamins, minerals and electrolytes.

See also

  • intravenous nutritional products
  • iron products
  • minerals and electrolytes
  • oral nutritional supplements
  • vitamin and mineral combinations
  • vitamins

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Non-nucleoside reverse transcriptase inhibitors (NNRTI

See also

Medical conditions associated with NNRTIs:

  • HIV Infection
  • Nonoccupational Exposure
  • Occupational Exposure
  • Reduction of Perinatal Transmission of HIV

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Neuraminidase inhibitors are drugs that block the function of the viral neuraminidase protein. By blocking this protein enzyme it stops the release of viruses from the infected host cell and prevents new host cells from being infected. These antiviral agents inhibit all subtypes of neuraminidase enzymes, therefore are effective against influenza viruses A and B.

See also

Medical conditions associated with neuraminidase inhibitors:

  • Avian Influenza
  • Influenza
  • Influenza Prophylaxis
  • Swine Flu

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Narcotic analgesic combinations are products containing a narcotic analgesic with another class of analgesic, such as acetaminophen or aspirin. They are used to treat moderate to severe pain.

See also

Medical conditions associated with narcotic analgesic combinations:

  • Back Pain
  • Cough
  • Headache
  • Opiate Dependence
  • Osteoarthritis
  • Overactive Bladder
  • Pain
  • Rheumatoid Arthritis

A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes.

Narcotic analgesics are drugs that relieve pain, can cause numbness and induce a state of unconsciousness.

They work by binding to opioid receptors, which are present in the central and peripheral nervous system. There are three types of opioid receptors, which are all G-protein linked and either facilitate opening of potassium channels (causing hyperpolarization) or inhibit calcium channel opening (so inhibits release of excitatory neurotransmitters such as substance P). Overall, narcotic analgesics reduce neuronal excitability in the pain carrying pathway.

Morphine and its analogues, and some synthetic derivatives are classed as narcotics analgesics. Narcotic analgesics are used to relieve acute and chronic, severe pain. Some narcotics are more potent than others. They also have the tendency to cause tolerance and dependence.

See also

Medical conditions associated with narcotic analgesics:

  • Anesthesia
  • Anesthetic Adjunct
  • Breakthrough Pain
  • Cough
  • Diabetic Nerve Damage
  • Diarrhea
  • Labor Pain
  • Light Sedation
  • Opiate Dependence
  • Opiate Withdrawal
  • Pain
  • Postoperative Pain
  • Sedation