Irinotecan is a derivative of Camptothecin. Camptothecins interact specifically with the enzyme topoisomerase I, which relieves torsional strain in DNA by inducing reversible single-strand breaks. Irinotecan and its active metabolite SN-38 bind to th...

Lercanidipine is a selective calcium channel blocker of the dihydropyridine group and it inhibits the transmembrane influx of calcium into smooth muscle. The mechanism of its antihypertensive action is due to a direct relaxant effect on vascular smoo...

Levobupivacaine is a long acting local anaesthetic of the amide type. It is the S-enantiomer of bupivacaine. It blocks nerve conduction in sensory and motor nerves mainly by interacting with voltage sensitive sodium channels on the cell membrane. It...

This preparation contains Levocetirizine Dihydrochloride. Levocetirizine is the active (Levo) isomer of cetirizine. It is a new highly effective and well-tolerated nonsedating antihistamine with potent antiallergic properties. It has a two-fold highe...

Levofloxacin is a synthetic, broad-spectrum, third generation fluoroquinolone antibiotic. Chemically, Levofloxacin is a chiral fluorinated carboxyquinolone. Levofloxacin exerts antibacterial action by inhibiting bacterial topoisomerase IV and DNA gyr...

Lidocaine acts mainly by inhibiting sodium influx through sodium specific ion channels in the neuronal cell membrane, in particular the so called voltage-gated sodium channels. When the influx of sodium is interrupted, an action potential cannot aris...

The efficacy of Lurasidone in schizophrenia could be mediated through a combination of central Dopamine D2 and Serotonin 5HT2A receptor antagonism.

The mechanism of action of maprotiline is not precisely known. It does not act primarily by stimulation of the central nervous system and is not a monoamine oxidase inhibitor. The postulated mechanism of maprotiline is that it acts primarily by poten...

Meclizine has antiemetic, anticholinergic and antihistaminic properties. It reduces the sensitivity of the labyrinthine apparatus. The action may be mediated through nerve pathways to the vomiting center (VC) from the chemoreceptor trigger zone (CTZ)...

Persistent activation of N-methyl-D-aspartate (NMDA) receptors in Central Nervous System by the excitatory amino acid glutamate has been hypothesized to contribute to the symptomatology of Alzheimer's disease. Memantine is postulated to exert its the...

Tizanidine is a centrally acting skeletal muscle relaxant. Its principal site of action is the spinal cord, where the evidence suggests that, by stimulating presynaptic alpha2 receptors, it inhibits the release of excitatory amino acids that stimulat...

Terbinafine, an Allylamine antifungal, inhibits biosynthesis of Ergosterol (an essential component of fungai cell membrane) via inhibition of Squalene Epoxidase enzyme. This results in fungal cell death primarily due to the increased membrane permeab...

Tetracycline has its main mechanism of action on protein synthesis, and an energy-dependent active transport system pumps the drug through the inner cytoplasmic membrane of bacteria. Once inside the bacterial cell, Tetracycline binds specifically to...

Thiamine, in the form of thiamine pyrophosphate, is the coenzyme for decarboxylation of α-ketoglutaric acid. Thiamine deficiency affects the peripheral nervous system, the gastrointestinal tract, and the cardiovascular system. This vitamin is n...

Tetracycline exhibits its bacteriostatic action by reversibly binding to the 30S subunits of the ribosome, thus preventing protein synthesis and arresting cell growth. It has a broad spectrum of antimicrobial activity including Chlamydiaceae, Mycopla...

Tramadol is a centrally acting synthetic analgesic compound. It inhibits the re uptake of neurotransmitters- serotonin and noradrenaline. Thus it modifies the transmission of pain impulses by activating both descending serotonergic pathways and norad...

Trihexyphenidyl is a non-selective muscarinic acetylcholine receptor antagonist but binds with higher affinity to the M1 subtype. In vivo studies have shown that trihexyphenidyl demonstrates higher affinity for central muscarinic receptors located in...

Triamcinolone Acetonide (a derivative of Triamcinolone) in a compatible base. Topical steroids are primarily effective because of their anti-inflammatory, antipruritic & vasoconstrictive actions.

Terazosin is selective for alpha-1-adrenoceptors but not their individual subtypes. Inhibition of these alpha-1-adrenoceptors results in relaxation of smooth muscle in blood vessels and the prostate, lowering blood pressure and improving urinary flow...