Date published: 2026-2-22

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CYP2B6 Activators

The class of chemicals known as CYP2B6 activators encompasses a diverse range of compounds that indirectly upregulate the activity of the CYP2B6 enzyme, a key player in drug metabolism. These chemicals achieve their effects by modulating various cellular receptors and transcription factors, leading to enhanced expression and activity of CYP2B6. One prominent mechanism involves the activation of nuclear receptors such as the constitutive androstane receptor (CAR) and the pregnane X receptor (PXR). Chemicals like phenobarbital and rifampicin bind to these receptors, triggering a cascade of intracellular events that culminate in the increased transcription of CYP2B6 genes. This transcriptional upregulation directly boosts the enzyme's expression and its subsequent metabolic capacity.

Another pathway involves the peroxisome proliferator-activated receptor alpha (PPARα), targeted by compounds like clofibrate. Activation of PPARα leads to similar outcomes, enhancing CYP2B6 expression and its role in metabolizing a variety of substrates. Additionally, certain anticonvulsants, like carbamazepine and phenytoin, and even some herbal supplements such as St. John's Wort, act on these receptors, demonstrating the broad spectrum of chemicals that can indirectly influence CYP2B6 activity.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Rifampicin

13292-46-1sc-200910
sc-200910A
sc-200910B
sc-200910C
1 g
5 g
100 g
250 g
$97.00
$328.00
$676.00
$1467.00
6
(1)

Rifampicin, an antibiotic, acts as an inducer of CYP2B6 by activating the pregnane X receptor (PXR). PXR, when stimulated, binds to specific DNA sequences, promoting the transcription of genes including CYP2B6, thus elevating its expression and metabolic activity.

Clofibrate

637-07-0sc-200721
1 g
$33.00
(1)

Clofibrate, a fibric acid derivative, upregulates CYP2B6 activity through peroxisome proliferator-activated receptor alpha (PPARα) activation. Activation of PPARα leads to an increase in CYP2B6 gene transcription, enhancing its enzymatic activity in metabolizing various substrates.

Carbamazepine

298-46-4sc-202518
sc-202518A
1 g
5 g
$33.00
$71.00
5
(0)

Carbamazepine, an anticonvulsant, induces CYP2B6 by activating both CAR and PXR receptors. This dual activation leads to an increase in the transcription and expression of CYP2B6, thereby amplifying its metabolic capacity.

Omeprazole

73590-58-6sc-202265
50 mg
$67.00
4
(1)

Omeprazole, a proton pump inhibitor, has been shown to influence CYP2B6 expression. While its mechanism is not fully understood, it appears to interact with hepatic transcription factors, potentially including PXR, thus modifying CYP2B6 activity.

Ketoconazole

65277-42-1sc-200496
sc-200496A
50 mg
500 mg
$63.00
$265.00
21
(1)

Ketoconazole, an antifungal agent, is known to modulate various cytochrome P450 enzymes, including CYP2B6. Its exact mechanism on CYP2B6 is not fully elucidated but involves interaction with liver receptors impacting CYP2B6 expression.

Dexamethasone

50-02-2sc-29059
sc-29059B
sc-29059A
100 mg
1 g
5 g
$91.00
$139.00
$374.00
36
(1)

Dexamethasone, a corticosteroid, induces CYP2B6 expression through glucocorticoid receptor-mediated mechanisms. This interaction influences the transcription and expression of CYP2B6 in hepatic cells, enhancing its metabolic function.