Conjugated Estrogens Pharmacology

Conjugated estrogens (Premarin) are most often used in the management of menopausal symptoms.

Estrogen therapy can increase the risk for breast cancer and the risk should be assessed before beginning therapy.

Blood clots are a potential consequence from the use of Premarin. Premarin can oppose the benefit of anticoagulation.

Conjugated estrogens are broken down by CYP3A4. Inhibitors may increase concentrations while inducers may reduce concentrations.

I discuss important drug interactions on the podcast, be sure to check out my latest project which is a 200+ page book on managing drug interactions in primary care.

Be sure to check out our free Top 200 study guide – a 31 page PDF that is yours for FREE!

Sildenafil Pharmacology

On this episode, I discuss sildenafil pharmacology, adverse effects, and important drug interactions.

Sildenafil’s most common and concerning adverse effect is in relation to its ability to lower blood pressure. I discuss this further in the podcast.

Sildenafil can cause rare visual changes that patients should be aware of and report immediately to their pharmacist or physician.

The sildenafil nitrate interaction is essential to know. I discuss it in this podcast episode.

I discuss important drug interactions on the podcast, be sure to check out my latest project which is a 200+ page book on managing drug interactions in primary care.

Be sure to check out our free Top 200 study guide – a 31 page PDF that is yours for FREE!

Medroxyprogesterone Acetate Injection Pharmacology

On this podcast episode, I cover medroxyprogesterone acetate injection pharmacology (DMPA or Depo-Provera)

Medroxyprogesterone acetate injection is given every three months for the prevention of pregnancy.

Medroxyprogesterone acetate has a boxed warning for its risk of causing low bone mineral density.

Classic enzyme inducers can cause lower concentrations of medroxyprogesterone which can potentially lead to contraceptive failure.

Examples of enzyme inducers that can lower concentrations of medroxyprogesterone include carbamazepine, phenytoin, rifampin, and some agents used in the management of HIV.

Be sure to check out our free Top 200 study guide – a 31 page PDF that is yours for FREE!