Flibanserin and Viagra target different aspects of sexual response. Viagra (sildenafil) addresses erectile dysfunction in men by increasing blood flow to the penis. This is a direct, physiological effect.
- Viagra’s mechanism: It inhibits an enzyme called phosphodiesterase-5 (PDE5), leading to increased levels of cGMP, a molecule that relaxes blood vessels.
Flibanserin, on the other hand, works on the brain’s neurotransmitters. It’s designed to treat hypoactive sexual desire disorder (HSDD) in premenopausal women.
- Flibanserin’s mechanism: It increases serotonin and norepinephrine levels while decreasing dopamine levels in specific brain regions. This complex interplay of neurotransmitters aims to improve sexual desire.
Key differences are summarized below:
Target: Viagra targets the circulatory system; Flibanserin targets the brain. Mechanism: Viagra acts directly on blood vessels; Flibanserin modulates neurotransmitter levels. Condition Treated: Viagra addresses erectile dysfunction; Flibanserin treats hypoactive sexual desire disorder. Gender: Primarily used in men; Primarily used in women.
In short, these drugs address different sexual health concerns through distinct mechanisms, affecting different bodily systems.


