Anastrozole / Exemestane (Aromatase Inhibitors) vs PDE-5 Inhibitors (Sildenafil / Tadalafil)
Both are used for sexual health. Here's how they compare on human evidence, mechanism, safety and availability — in plain English.
| Anastrozole / Exemestane (Aromatase Inhibitors) | PDE-5 Inhibitors (Sildenafil / Tadalafil) | |
|---|---|---|
| Human evidence | ★★★★☆ | ★★★★★ |
| Legal status | Prescription, Off-Label | FDA Approved |
| How it works | Inhibit aromatase (CYP19A1), the enzyme converting testosterone to estradiol. Anastrozole is reversible; exemestane is a suicide (irreversible) inhibitor. | Inhibit phosphodiesterase-5 (PDE5A), preserving cGMP → sustained nitric-oxide-driven vasodilation in erectile tissue; tadalafil's long half-life also aids BPH and is studied for endothelial/longevity effects. |
| In plain English | High testosterone partly converts to estrogen, which can cause bloating and gyno. These drugs block that conversion. Easy to overdo — crashing estrogen wrecks mood, joints, and libido. | Keeps blood vessels relaxed and blood flowing where it's needed. Extremely well-established; daily low-dose tadalafil also has vascular-health interest. |
| Bottom line | Use only if estradiol is genuinely high; low estrogen is as bad as high. | Gold-standard ED treatment; low-dose daily has broader vascular appeal. |
| Availability | Prescription only | Available over the counter |
Which is better for sexual health?
PDE-5 Inhibitors (Sildenafil / Tadalafil) has the stronger human-evidence rating (★★★★★ vs ★★★★☆), but the right choice still depends on your goal, tolerance and budget.
Full breakdowns: Anastrozole / Exemestane (Aromatase Inhibitors) · PDE-5 Inhibitors (Sildenafil / Tadalafil).
Common questions
Is Anastrozole / Exemestane (Aromatase Inhibitors) or PDE-5 Inhibitors (Sildenafil / Tadalafil) better for sexual health?
PDE-5 Inhibitors (Sildenafil / Tadalafil) has the stronger human-evidence rating (★★★★★ vs ★★★★☆), but the right choice still depends on your goal, tolerance and budget.
What's the difference between Anastrozole / Exemestane (Aromatase Inhibitors) and PDE-5 Inhibitors (Sildenafil / Tadalafil)?
Anastrozole / Exemestane (Aromatase Inhibitors): Use only if estradiol is genuinely high; low estrogen is as bad as high. — PDE-5 Inhibitors (Sildenafil / Tadalafil): Gold-standard ED treatment; low-dose daily has broader vascular appeal.