Levomilnacipran Pharmacology

In this episode of our pharmacology podcast, we take a deep dive into the pharmacology of levomilnacipran (Fetzima), a unique serotonin-norepinephrine reuptake inhibitor (SNRI) approved for the treatment of major depressive disorder (MDD) in adults. Designed for pharmacy students, clinicians, and anyone interested in psychopharmacology, this episode breaks down what makes levomilnacipran different from other antidepressants and how to use it effectively in clinical practice.

We explore levomilnacipran’s mechanism of action, which features a greater affinity for norepinephrine reuptake inhibition compared to serotonin—an uncommon trait among SNRIs. This pharmacologic profile gives it a distinctive effect on energy, motivation, and physical symptoms of depression. Listeners will also learn about its pharmacokinetics, including once-daily dosing, renal elimination, and metabolism via the CYP3A4 pathway—making drug interactions an important consideration.

The episode also covers levomilnacipran side effects, including common adverse reactions like nausea, dry mouth, constipation, and increased heart rate or blood pressure. We’ll also highlight rare but serious risks like serotonin syndrome and urinary hesitation.

Because levomilnacipran drug interactions can impact safety and efficacy, we review important combinations to avoid, such as CYP3A4 inhibitors (e.g., ketoconazole), serotonergic drugs, and blood pressure-altering agents. For pharmacists and prescribers, this is a key segment to help guide safer medication use and monitoring.

Finally, we wrap up with clinical pearls for starting, titrating, and monitoring levomilnacipran therapy—including renal dose adjustments and differences with duloxetine.

Whether you’re studying for boards or optimizing your patient’s antidepressant regimen, this episode delivers a concise, evidence-based overview of levomilnacipran pharmacology in a digestible, podcast-friendly format.

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Venlafaxine Pharmacology

In this episode, I discuss venlafaxine pharmacology, adverse effect, dose conversion of IR to ER, and drug interactions.

Venlafaxine is notorious for producing withdrawal symptoms when discontinued abruptly. I discuss these in detail on the podcast.

How significant is the interaction of venlafaxine with antiplatelet agents? I discuss that in this episode.

The onset of action is a critical education point that patients must be aware of as it takes some time for venlafaxine to work.

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

Duloxetine Pharmacology

On this episode, I discuss duloxetine pharmacology, adverse effects, and common drug interactions.

Duloxetine is an SNRI that is used for depression, anxiety, and various pain syndromes like neuropathy and fibromyalgia.

Duloxetine can inhibit CYP2D6 which can lead to higher concentrations of clozapine and propranolol and lower activity of tamoxifen.

CYP1A2 inhibitors like ciprofloxacin can raise concentrations of duloxetine leading to an increased potential for adverse effects.

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

Support The Podcast and Check Out These Amazing Resources!

NAPLEX Study Materials

BCPS Study Materials

BCACP Study Materials

BCGP Study Materials

BCMTMS Study Materials

Meded101 Guide to Nursing Pharmacology (Amazon Highly Rated)

Guide to Drug Food Interactions (Amazon Best Seller)

Pharmacy Technician Study Guide by Meded101