Silodosin is a selective antagonist of post-synaptic alpha-1 adrenoreceptors, which are located in the human prostate, bladder base, bladder neck, prostatic capsule and prostatic urethra. Blockade of these alpha-1 adrenoreceptors can cause smooth mus...

Nasal drop: Sodium Chloride nasal drop is a non-drug, isotonic saline solution that is used to moisturize nasal membranes. This formulation provides comfort for extensive and continuous use. Sodium Chloride 0.9% nasal wash moistures...

Xylometazoline Hydrochloride is a sympathomimetic agent with alpha-adrenergic activity. It produces vasoconstriction thus reducing nasal congestion. This enables patients suffering from colds to breathe more easily through the nose.<...

Sotalol is a non-cardioselective beta-blocker. It increases sinus cycle length, slows heart rate, decreases AV nodal conduction and increases AV nodal refractoriness. It also prolongs AV monophasic action potentials. However, it lacks intrinsic sympa...

Suxamethonium is a muscle relaxant. It acts as a depolarizing neuromuscular blocker by imitating the action of acetylcholine at the neuromuscular junction. Suxamethonium acts on muscle type nicotinic receptors. Binding of Suxamethonium to the nicotin...

Tamsulosin & Dutasteride is a combination of two drugs with complementary mechanisms of action to improve symptoms in patients with Benign Prostatic Hyperplasia (BPH). Tamsulosin Hydrochloride, an antagonist of alpha_1A-adrenoreceptors...

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...

Cyclophosphamide is biotransformed principally in the liver to active alkylating metabolites by a mixed function microsomal oxidase system. These metabolites interfere with the growth of susceptible rapidly proliferating malignant cells. The mechanis...

Nasal congestion is caused by various etiologies, such as rhinosinusitis and allergic or non-allergic rhinitis, leading to congestion of the venous sinusoids lining the nasal mucosa. Activation of α-adrenergic receptors leads to vasoconstrictio...

Verapamil is an L-type calcium channel blocker with antiarrhythmic, antianginal, and antihypertensive activity. Immediate-release verapamil has a relatively short duration of action, requiring dosing 3 to 4 times daily, but extended-release formulati...

The mechanism of the antidepressant action of venlafaxine in humans is believed to be associated with its potentiation of neurotransmitter activity in the CNS. Preclinical studies have shown that venlafaxine and its active metabolite, O-desmethylvenl...

Vancomycin binds tightly to D-alanyl-D-alanine portion cell wall precursor causing blockage of glycopeptide polymerisation which produces immediate inhibition of cell wall synthesis and secondary damage to the cytoplasmic membrane.

The primary pharmacological action of beta-adrenergic drugs is to stimulate adenyl cyclase, the enzyme which catalyzes the formation of cyclic-3',5' adenosine monophosphate (cyclic AMP) from adenosine triphosphate (ATP). The cyclic AMP thus formed me...

Trimetazidine Dihydrochloride is the first 3- keto acyl CoA thiolase inhibitor (KAT), a metabolic anti-ischemic agent with proven benefits for all coronary patients. Trimetazidine Dihydrochloride inhibits fatty acid pathway by inhibiting 3-keto acyl...

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.

Temozolomide is not directly active but undergoes rapid nonenzymatic conversion at physiologic pH to the reactive compound Methyl Triazen Imidazole Carboxamide (MTIC). The cytotoxicity of MTIC is thought to be primarily due to alkylation of DNA. Alky...

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...

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...

Tetracycline is a broad-spectrum antibiotic which is bacteriostatic for manybacteria, rickettsiae, chlamydia, mycoplasma and brucella. It exerts its antimicrobial effect by inhibiting protein synthesis. After a single oral dose of Tetracycline peak p...