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Tamsulosin

Tamsulosin is a selective antagonist at alpha-1A and alpha-1B-adrenoceptors in the prostate, prostatic capsule, prostatic urethra, and bladder neck. At least three discrete alpha1-adrenoceptor subtypes have been identified: alpha-1A, alpha-1B and alpha-1D; their distribution differs between human organs and tissue. Approximately 70% of the alpha1-receptors in human prostate are of the alpha-1A subtype. Blockage of these receptors causes relaxation of smooth muscles in the bladder neck and prostate.

Tamsulosin, a sulfamoylphenethylamine-derivative alpha-adrenoceptor blocker with enhanced specificity for the alpha-adrenoceptors of the prostate, is commonly used to treat benign prostatic hyperplasia (BPH). The drug is commercially available in a racemic mixture of 2 isomers, and is pharmacologically related to doxazocin, prazosin, and terazosin. However, unlike these drugs, tamsulosin has a higher affinity for the alpha-1A- adrenergic receptors, which are located in vascular smooth muscle. Studies show that tamsulosin has about 12 times greater affinity for alpha-1 adrenergic receptors in the prostate than those in the aorta, which may result in a reduced incidence of adverse cardiovascular effects.

LD50 = 650 mg/kg (in rats)

Imprints


Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: Flomax 0.4 Mg BI 58
Color: Brown & Orange
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: TSL 0.4
Color: Green & Orange
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: ZA-18 0.4 Mg
Color: Green / Peach
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: 93 7338 93 7338
Color: Brown / Beige
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: W 516
Color: Green & Orange
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: G821 G821
Color: Orange / Green
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: MYLAN 2500 MYLAN 2500
Color: Blue
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: 160 160
Color: Green & Yellow
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: TML 0.4 TML 0.4
Color: Green & Yellow
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: D 53
Color: Green & Orange
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.4 Mg
Pill Imprint: A169 0.4
Color: Green & Yellow
Shape: Capsule-shape

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Drug: Tamsulosin
Strength: 0.5 Mg / 0.4 Mg
Pill Imprint: C280 0.5/0.4
Color: Blue & White
Shape: Capsule-shape

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