Adrenergic Receptor

Sigaling Pathway Map

Research Area

Inhibitory Selectivity

click to view more

Notes:
2. For more details, such as half maximal inhibitory concentrations (IC50s) and working concentrations of each inhibitor, please click on the link of the inhibitor of interest.
3. "+" indicates inhibitory effect. Increased inhibition is marked by a higher "+" designation.
4. Orange "√" refers to compounds which do inhibitory effects on the related isoform, but without specific value.

Isoform-specific Inhibitors

Catalog No. Information Product Use Citations Product Validations
S4076

Propranolol HCl

Propranolol HCl is a competitive non-selective beta-adrenergic receptors inhibitor with IC50 of 12 nM.

S1206

Bisoprolol fumarate

Bisoprolol fumarate is a selective type β1 adrenergic receptor blocker.

S4113

Desvenlafaxine

Desvenlafaxine is a serotonin (5-HT) and norepinephrine (NE) reuptake inhibitor with Ki of 40.2 nM and 558.4 nM, respectively.

S1642

Methyldopa

Methyldopa (Aldomet) is a DOPA decarboxylase competitive inhibitor with an ED50 of 21.8 mg/kg.

S4112

Desvenlafaxine Succinate

Desvenlafaxine Succinate is a new serotonin (5-HT) transporter and norepinephrine (NE) transporter reuptake inhibitor with Ki of 40.2 nM and 558.4 nM respectively.

S2086

Ivabradine HCl

Ivabradine HCl, a new If inhibitor with IC 50 of 2.9 μM which acts specifically on the pacemaker activity of the sinoatrial node, is a pure heart rate lowering agent.

S2113

Cisatracurium Besylate

Cisatracurium Besylate is a nondepolarizing neuromuscular blocking agent, antagonizing the action of acetylcholine by inhibiting neuromuscular transmission.

S2507

Salbutamol Sulfate

Salbutamol Sulfate is a short-acting β2-adrenergic receptor agonist with an IC50 of 8.93 µM.

S4009

Mirabegron

Mirabegron is a selective β3-adrenoceptor agonist with EC50 of 22.4 nM.

S2516

Xylazine HCl

Xylazine is an α2-Adrenergic receptor agonist, used as a sedative and muscle relaxant.

S4693New

Guanfacine Hydrochloride

Guanfacine Hydrochloride is a selective α2A-adrenoceptor agonist with anti-hypertensive effect.

S7974New

L755507

L-755,507 is characterized as a potent and selective β3 adrenergic receptor partial agonist with EC50 of 0.43 nM. It is also recently identified to enhance CRISPR-mediated homology-directed repair (HDR) efficiency in human induced pluripotent stem cells (iPSCs) and other cell types.

S3083

Indacaterol Maleate

Indacaterol is an ultra-long-acting β-adrenoceptor agonist with pKi of 7.36.

S2566

Isoprenaline HCl

Isoprenaline is a non-selective beta-adrenergic receptor agonist, used for the treatment of bradycardia and heart block.

S2020

Formoterol Hemifumarate

Formoterol Hemifumarate is a potent, selective and long-acting β2-adrenoceptor agonist used in the management of asthma and chronic obstructive pulmonary disease(COPD).

S2521

Epinephrine bitartrate

Epinephrine bitartrate is an alpha- and beta-adrenergic receptor stimulator.

S2458

Clonidine HCl

Clonidine HCl is a direct-acting α2 adrenergic agonist with an ED50 of 0.02±0.01 mg/kg.

S2495

Oxymetazoline HCl

Oxymetazoline HCl is an α1 and α2 adrenergic receptor agonist, used to relieve nasal discomfort caused by colds, allergies, and hay fever.

S3041

Droxidopa

Droxidopa is a psychoactive drug and acts as a prodrug to the neurotransmitters norepinephrine (noradrenaline) and epinephrine (adrenaline).

S3075

Dexmedetomidine

Dexmedetomidine is a sedative medication used by intensive care units and anesthetists.

S2522

L-Adrenaline

L-Adrenaline belongs to a group of the compounds known as catecholamines.

S2569

Phenylephrine HCl

Phenylephrine HCl is a selective α1-adrenergic receptor agonist, used primarily as a decongestant.

S4065

Guanabenz Acetate

Guanabenz Acetate is an selective agonist of α2a-adrenergic receptor, α2b-adrenergic receptor and α2c-adrenergic receptor with pEC50 of 8.25, 7.01 and ~5, respectively.

S2519

Naphazoline HCl

Naphazoline HCl is an ocular vasoconstrictor and imidazoline derivative sympathomimetic amine.

S2533

Ritodrine HCl

Ritodrine HCl is a hydrochloride salt of ritodrine which is a β-2 adrenergic receptor agonist.

S2438

Synephrine HCl

SynephrineHCl (Oxedrine, p-Synephrine) is a sympathomimetic α-adrenergic receptor (AR) agonist.

S2090

Dexmedetomidine HCl

Dexmedetomidine HCl is a highly selective and potent alpha-2 adrenoceptor agonist, which reduces anesthetic requirements for patients by providing significant sedation.

S3061

Epinephrine HCl

Epinephrine HCl is a hormone and a neurotransmitter.

S3060

Medetomidine HCl

Medetomidine is a selective α2-adrenoceptor agonist, with Ki of 1.08 nM, exhibts 1620-fold selectivity over α1-adrenoceptor.

S1437

Tizanidine HCl

Tizanidine HCl is an α2-adrenergic receptor agonist and inhibits neurotransmitter release from CNS noradrenergic neurons.

S2092

Detomidine HCl

Detomidine HCl produce dose-dependent sedative and analgesic effects, mediatated by activation of α2 catecholamine receptors.

S2545

Scopine

Scopine is the metabolite of anisodine, which is a α1-adrenergic receptor agonist and used in the treatment of acute circulatory shock.

S4296

Salmeterol Xinafoate

Salmeterol Xinafoate is a long-acting β2-adrenergic receptor agonist with anti-inflammatory effects, used in the treatment of asthma symptoms and chronic obstructive pulmonary disease (COPD) symptoms.

S2523

DL-Adrenaline

DL-Adrenaline is a hormone and a neurotransmitter secreted by the medulla of the adrenal glands.

S4266

Brimonidine Tartrate

Brimonidine Tartrate is a highly selective α-adrenergic receptor agonist with EC50 of 0.45 nM for the α2A adrenoreceptor, and used to treat open-angle glaucoma or ocular hypertension.

S2615

Noradrenaline bitartrate monohydrate

Noradrenaline bitartrate monohydrate is a direct alpha-adrenergic receptors stimulator.

S4127

Terbutaline Sulfate

Terbutaline Sulfate is a selective β2-adrenergic receptor agonist with IC50 of 53 nM.

S4135

Clorprenaline HCl

Clorprenaline HCl is a β2-receptor agonist, it has a significant expansion of the bronchial effect.

S4043

Tetrahydrozoline HCl

Tetrahydrozoline HCl is an imidazoline derivative with alpha receptor agonist activity.

S2576

Xylometazoline HCl

Xylometazoline is an α-adrenoceptor agonist commonly used as nasal decongestant, exhibits highest potency at α2B-adrenoceptor subtype with EC50 of 99 μM.

S4277

Bambuterol HCl

Bambuterol HCl is a potent β-adrenoceptor agonist, used in the treatment of asthma.

S2362

Synephrine

Synephrine, a natural protoalkaloid in the extract of bitter orange and other citrus species, is commonly used for weight loss.

S3185

Adrenalone HCl

Adrenalone is an adrenergic agonist used as a topical vasoconstrictor and hemostatic, mainly acts on alpha-1 adrenergic receptors.

S1324

Doxazosin Mesylate

Doxazosin, a quinazoline-derivative, selectively antagonizes postsynaptic α1-adrenergic receptors, used in the treatment of high blood pressure and urinary retention associated with benign prostatic hyperplasia.

S1283

Asenapine maleate

Asenapine maleate is a high-affinity antagonist of serotonin, norepinephrine, dopamine and histamine receptors, used for the treatment of schizophrenia and acute mania associated with bipolar disorder.

S4729New

Tamsulosin hydrochloride

Tamsulosin is a potent and selective α1a adrenergic receptor antagonist.

S4679New

Terazosin

Terazosin is a selective alpha-1 antagonist used for treatment of symptoms of an enlarged prostate (BPH). It works by blocking the action of adrenaline on smooth muscle of the bladder and the blood vessel walls.

S4650New

Atipamezole

Atipamezole is a synthetic α2 adrenergic receptor antagonist. It has also been researched in humans as a potential anti-Parkinsonian drug.

S4649New

Atipamezole hydrochloride

Atipamezole is a synthetic α2 adrenergic receptor antagonist. It has also been researched in humans as a potential anti-Parkinsonian drug. Atipamezole hydrochloride is hydrochloride form of atipamezole.

S1409

Alfuzosin HCl

Alfuzosin HCl is an alpha1 receptor antagonist used to treat benign prostatic hyperplasia (BPH).

S1613

Silodosin

Silodosin is a highly selective α1A-adrenoceptor antagonist, used in treatment of benign prostatic hyperplasia.

S1549

Nebivolol

Nebivolol selectively inhibits β1-adrenoceptor with IC50 of 0.8 nM.

S2691

BMY 7378

BMY 7378 is a multi-targeted inhibitor of α2C-adrenoceptor and α1D-adrenoceptor with pKi of 6.54 and 8.2, respectively, and acts as a mixed agonist and antagonist for 5-HT1A receptor with pKi of 8.3.

S1424

Prazosin HCl

Prazosin HCl is a competitive alpha-1 adrenoceptor antagonist, used to treat high blood pressure or benign prostatic hyperplasia.

S2038

Phentolamine Mesylate

Phentolamine Mesylate is a reversible and nonselective alpha-adrenergic receptor antagonist, used for the prevention or control of hypertensive episodes.

S1856

Metoprolol Tartrate

Metoprolol Tartrate is a selective β1 receptor blocker medication, used to treat hypertension and heart failure.

S2059

Terazosin HCl

Terazosin HCl is a selective α1-adrenoceptor antagonist, used for treatment of symptoms of an enlarged prostate (BPH).

S1387

Naftopidil DiHCl

Naftopidil DiHCl is a selective 5-HT1A and α1-adrenergic receptor antagonist with IC50 of 0.1 μM and 0.2 μM, respectively.

S2517

Maprotiline HCl

Maprotiline HCl is a selective noradrenalin re-uptake inhibitor, used in the treatment of depression.

S1831

Carvedilol

Carvedilol is a non-selective beta blocker/alpha-1 blocker, used to treat congestive heart failure (CHF) and high blood pressure.

S2126

Naftopidil

Naftopidil is a selective α1-adrenergic receptor antagonist with Ki of 3.7 nM, 20 nM, and 1.2 nM for α1a, α1b, and α1d, respectively, used for the treatment of benign prostatic hyperplasia.

S2499

Phenoxybenzamine HCl

Phenoxybenzamine HCl is a non-specific, irreversible alpha antagonist with an IC50 of 550 nM.

S2509

Sotalol

Sotalol is a non-selective beta blocker and a potassium channel blocker with an IC50 of 43 μM.

S4123

Timolol Maleate

Timolol Maleate is a non-selective, beta-adrenergic receptor antagonist for β1/β2 with Ki of 1.97 nM/2.0 nM.

S4010

Acebutolol HCl

Acebutolol is a β-adrenergic receptors antagonist used in the treatment of hypertension, angina pectoris and cardiac arrhythmias.

S1827

Betaxolol HCl

Betaxolol is a β1 adrenergic receptor blocker with IC50 of 6 μM.

S4124

Tolazoline HCl

Tolazoline is a non-selective competitive α-adrenergic receptor antagonist.

S4085

Levobetaxolol HCl

Levobetaxolol exhibits a higher affinity at cloned human β1 and β2 receptors with Ki value of 0.76 nM and 32.6 nM, respectively.

S4100

Esmolol HCl

Esmolol is a cardioselective b-blocker, used to control rapid heartbeats or abnormal heart rhythms.

S2091

Betaxolol

Betaxolol is a selective beta1 adrenergic receptor blocker used in the treatment of hypertension and glaucoma.

S4278

Carteolol HCl

Carteolol HCl is a β-adrenoceptor antagonist, used for the treatment of glaucoma.

S2373

Yohimbine HCl

Yohimbine has been used as a mydriatic and in the treatment of impotence. It is also alleged to be an aphrodisiac.

S4291

Labetalol HCl

Labetalol HCl is a dual antagonist for both selective alpha1-adrenergic and nonselective beta-adrenergic receptors, used in the treatment of high blood pressure.

Catalog No. Information Product Use Citations Product Validations
S4076

Propranolol HCl

Propranolol HCl is a competitive non-selective beta-adrenergic receptors inhibitor with IC50 of 12 nM.

S1206

Bisoprolol fumarate

Bisoprolol fumarate is a selective type β1 adrenergic receptor blocker.

S4113

Desvenlafaxine

Desvenlafaxine is a serotonin (5-HT) and norepinephrine (NE) reuptake inhibitor with Ki of 40.2 nM and 558.4 nM, respectively.

S1642

Methyldopa

Methyldopa (Aldomet) is a DOPA decarboxylase competitive inhibitor with an ED50 of 21.8 mg/kg.

S4112

Desvenlafaxine Succinate

Desvenlafaxine Succinate is a new serotonin (5-HT) transporter and norepinephrine (NE) transporter reuptake inhibitor with Ki of 40.2 nM and 558.4 nM respectively.

S2086

Ivabradine HCl

Ivabradine HCl, a new If inhibitor with IC 50 of 2.9 μM which acts specifically on the pacemaker activity of the sinoatrial node, is a pure heart rate lowering agent.

S2113

Cisatracurium Besylate

Cisatracurium Besylate is a nondepolarizing neuromuscular blocking agent, antagonizing the action of acetylcholine by inhibiting neuromuscular transmission.

Catalog No. Information Product Use Citations Product Validations
S1324

Doxazosin Mesylate

Doxazosin, a quinazoline-derivative, selectively antagonizes postsynaptic α1-adrenergic receptors, used in the treatment of high blood pressure and urinary retention associated with benign prostatic hyperplasia.

2013, 123(12):5119-34

2015, 120:140-6

S1283

Asenapine maleate

Asenapine maleate is a high-affinity antagonist of serotonin, norepinephrine, dopamine and histamine receptors, used for the treatment of schizophrenia and acute mania associated with bipolar disorder.

S4729New

Tamsulosin hydrochloride

Tamsulosin is a potent and selective α1a adrenergic receptor antagonist.

S4679New

Terazosin

Terazosin is a selective alpha-1 antagonist used for treatment of symptoms of an enlarged prostate (BPH). It works by blocking the action of adrenaline on smooth muscle of the bladder and the blood vessel walls.

S4650New

Atipamezole

Atipamezole is a synthetic α2 adrenergic receptor antagonist. It has also been researched in humans as a potential anti-Parkinsonian drug.

S4649New

Atipamezole hydrochloride

Atipamezole is a synthetic α2 adrenergic receptor antagonist. It has also been researched in humans as a potential anti-Parkinsonian drug. Atipamezole hydrochloride is hydrochloride form of atipamezole.

S1409

Alfuzosin HCl

Alfuzosin HCl is an alpha1 receptor antagonist used to treat benign prostatic hyperplasia (BPH).

2016, 76(8):757-66

S1613

Silodosin

Silodosin is a highly selective α1A-adrenoceptor antagonist, used in treatment of benign prostatic hyperplasia.

S1549

Nebivolol

Nebivolol selectively inhibits β1-adrenoceptor with IC50 of 0.8 nM.

S2691

BMY 7378

BMY 7378 is a multi-targeted inhibitor of α2C-adrenoceptor and α1D-adrenoceptor with pKi of 6.54 and 8.2, respectively, and acts as a mixed agonist and antagonist for 5-HT1A receptor with pKi of 8.3.

S1424

Prazosin HCl

Prazosin HCl is a competitive alpha-1 adrenoceptor antagonist, used to treat high blood pressure or benign prostatic hyperplasia.

S2038

Phentolamine Mesylate

Phentolamine Mesylate is a reversible and nonselective alpha-adrenergic receptor antagonist, used for the prevention or control of hypertensive episodes.

S1856

Metoprolol Tartrate

Metoprolol Tartrate is a selective β1 receptor blocker medication, used to treat hypertension and heart failure.

S2059

Terazosin HCl

Terazosin HCl is a selective α1-adrenoceptor antagonist, used for treatment of symptoms of an enlarged prostate (BPH).

S1387

Naftopidil DiHCl

Naftopidil DiHCl is a selective 5-HT1A and α1-adrenergic receptor antagonist with IC50 of 0.1 μM and 0.2 μM, respectively.

S2517

Maprotiline HCl

Maprotiline HCl is a selective noradrenalin re-uptake inhibitor, used in the treatment of depression.

S1831

Carvedilol

Carvedilol is a non-selective beta blocker/alpha-1 blocker, used to treat congestive heart failure (CHF) and high blood pressure.

2015, 10(5):388-96

S2126

Naftopidil

Naftopidil is a selective α1-adrenergic receptor antagonist with Ki of 3.7 nM, 20 nM, and 1.2 nM for α1a, α1b, and α1d, respectively, used for the treatment of benign prostatic hyperplasia.

S2499

Phenoxybenzamine HCl

Phenoxybenzamine HCl is a non-specific, irreversible alpha antagonist with an IC50 of 550 nM.

S2509

Sotalol

Sotalol is a non-selective beta blocker and a potassium channel blocker with an IC50 of 43 μM.

2015, 285(1):51-60

S4123

Timolol Maleate

Timolol Maleate is a non-selective, beta-adrenergic receptor antagonist for β1/β2 with Ki of 1.97 nM/2.0 nM.

S4010

Acebutolol HCl

Acebutolol is a β-adrenergic receptors antagonist used in the treatment of hypertension, angina pectoris and cardiac arrhythmias.

S1827

Betaxolol HCl

Betaxolol is a β1 adrenergic receptor blocker with IC50 of 6 μM.

S4124

Tolazoline HCl

Tolazoline is a non-selective competitive α-adrenergic receptor antagonist.

S4085

Levobetaxolol HCl

Levobetaxolol exhibits a higher affinity at cloned human β1 and β2 receptors with Ki value of 0.76 nM and 32.6 nM, respectively.

S4100

Esmolol HCl

Esmolol is a cardioselective b-blocker, used to control rapid heartbeats or abnormal heart rhythms.

S2091

Betaxolol

Betaxolol is a selective beta1 adrenergic receptor blocker used in the treatment of hypertension and glaucoma.

S4278

Carteolol HCl

Carteolol HCl is a β-adrenoceptor antagonist, used for the treatment of glaucoma.

S2373

Yohimbine HCl

Yohimbine has been used as a mydriatic and in the treatment of impotence. It is also alleged to be an aphrodisiac.

S4291

Labetalol HCl

Labetalol HCl is a dual antagonist for both selective alpha1-adrenergic and nonselective beta-adrenergic receptors, used in the treatment of high blood pressure.

Catalog No. Information Product Use Citations Product Validations
S2507

Salbutamol Sulfate

Salbutamol Sulfate is a short-acting β2-adrenergic receptor agonist with an IC50 of 8.93 µM.

S4009

Mirabegron

Mirabegron is a selective β3-adrenoceptor agonist with EC50 of 22.4 nM.

S2516

Xylazine HCl

Xylazine is an α2-Adrenergic receptor agonist, used as a sedative and muscle relaxant.

2016, 5(3):357-360

2012, 19(3):358-65

S4693New

Guanfacine Hydrochloride

Guanfacine Hydrochloride is a selective α2A-adrenoceptor agonist with anti-hypertensive effect.

S7974New

L755507

L-755,507 is characterized as a potent and selective β3 adrenergic receptor partial agonist with EC50 of 0.43 nM. It is also recently identified to enhance CRISPR-mediated homology-directed repair (HDR) efficiency in human induced pluripotent stem cells (iPSCs) and other cell types.

S3083

Indacaterol Maleate

Indacaterol is an ultra-long-acting β-adrenoceptor agonist with pKi of 7.36.

S2566

Isoprenaline HCl

Isoprenaline is a non-selective beta-adrenergic receptor agonist, used for the treatment of bradycardia and heart block.

S2020

Formoterol Hemifumarate

Formoterol Hemifumarate is a potent, selective and long-acting β2-adrenoceptor agonist used in the management of asthma and chronic obstructive pulmonary disease(COPD).

S2521

Epinephrine bitartrate

Epinephrine bitartrate is an alpha- and beta-adrenergic receptor stimulator.

S2458

Clonidine HCl

Clonidine HCl is a direct-acting α2 adrenergic agonist with an ED50 of 0.02±0.01 mg/kg.

S2495

Oxymetazoline HCl

Oxymetazoline HCl is an α1 and α2 adrenergic receptor agonist, used to relieve nasal discomfort caused by colds, allergies, and hay fever.

S3041

Droxidopa

Droxidopa is a psychoactive drug and acts as a prodrug to the neurotransmitters norepinephrine (noradrenaline) and epinephrine (adrenaline).

S3075

Dexmedetomidine

Dexmedetomidine is a sedative medication used by intensive care units and anesthetists.

S2522

L-Adrenaline

L-Adrenaline belongs to a group of the compounds known as catecholamines.

S2569

Phenylephrine HCl

Phenylephrine HCl is a selective α1-adrenergic receptor agonist, used primarily as a decongestant.

S4065

Guanabenz Acetate

Guanabenz Acetate is an selective agonist of α2a-adrenergic receptor, α2b-adrenergic receptor and α2c-adrenergic receptor with pEC50 of 8.25, 7.01 and ~5, respectively.

S2519

Naphazoline HCl

Naphazoline HCl is an ocular vasoconstrictor and imidazoline derivative sympathomimetic amine.

S2533

Ritodrine HCl

Ritodrine HCl is a hydrochloride salt of ritodrine which is a β-2 adrenergic receptor agonist.

S2438

Synephrine HCl

SynephrineHCl (Oxedrine, p-Synephrine) is a sympathomimetic α-adrenergic receptor (AR) agonist.

S2090

Dexmedetomidine HCl

Dexmedetomidine HCl is a highly selective and potent alpha-2 adrenoceptor agonist, which reduces anesthetic requirements for patients by providing significant sedation.

S3061

Epinephrine HCl

Epinephrine HCl is a hormone and a neurotransmitter.

S3060

Medetomidine HCl

Medetomidine is a selective α2-adrenoceptor agonist, with Ki of 1.08 nM, exhibts 1620-fold selectivity over α1-adrenoceptor.

S1437

Tizanidine HCl

Tizanidine HCl is an α2-adrenergic receptor agonist and inhibits neurotransmitter release from CNS noradrenergic neurons.

S2092

Detomidine HCl

Detomidine HCl produce dose-dependent sedative and analgesic effects, mediatated by activation of α2 catecholamine receptors.

S2545

Scopine

Scopine is the metabolite of anisodine, which is a α1-adrenergic receptor agonist and used in the treatment of acute circulatory shock.

S4296

Salmeterol Xinafoate

Salmeterol Xinafoate is a long-acting β2-adrenergic receptor agonist with anti-inflammatory effects, used in the treatment of asthma symptoms and chronic obstructive pulmonary disease (COPD) symptoms.

S2523

DL-Adrenaline

DL-Adrenaline is a hormone and a neurotransmitter secreted by the medulla of the adrenal glands.

S4266

Brimonidine Tartrate

Brimonidine Tartrate is a highly selective α-adrenergic receptor agonist with EC50 of 0.45 nM for the α2A adrenoreceptor, and used to treat open-angle glaucoma or ocular hypertension.

S2615

Noradrenaline bitartrate monohydrate

Noradrenaline bitartrate monohydrate is a direct alpha-adrenergic receptors stimulator.

S4127

Terbutaline Sulfate

Terbutaline Sulfate is a selective β2-adrenergic receptor agonist with IC50 of 53 nM.

S4135

Clorprenaline HCl

Clorprenaline HCl is a β2-receptor agonist, it has a significant expansion of the bronchial effect.

S4043

Tetrahydrozoline HCl

Tetrahydrozoline HCl is an imidazoline derivative with alpha receptor agonist activity.

S2576

Xylometazoline HCl

Xylometazoline is an α-adrenoceptor agonist commonly used as nasal decongestant, exhibits highest potency at α2B-adrenoceptor subtype with EC50 of 99 μM.

S4277

Bambuterol HCl

Bambuterol HCl is a potent β-adrenoceptor agonist, used in the treatment of asthma.

S2362

Synephrine

Synephrine, a natural protoalkaloid in the extract of bitter orange and other citrus species, is commonly used for weight loss.

S3185

Adrenalone HCl

Adrenalone is an adrenergic agonist used as a topical vasoconstrictor and hemostatic, mainly acts on alpha-1 adrenergic receptors.

Tags: adrenergic receptor activation | adrenergic receptor types | adrenergic receptor location | adrenergic receptor drugs | adrenergic receptor signaling | adrenergic receptor pathway | beta adrenergic receptor pathway | beta adrenergic receptor activation | beta 2 adrenergic receptor activation | beta 2 adrenergic receptor pathway | alpha adrenergic receptor pathway | alpha 1 adrenergic receptor pathway | beta 1 adrenergic receptor pathway | adrenergic receptor inhibitor review