Online ED Treatment: Sildenafil vs Tadalafil vs Compounded Options
Erectile dysfunction affects 30 million American men, yet most never seek treatment. With telehealth, getting an effective prescription is now discreet, fast, and affordable. Here's how the options compare.
How ED Medications Work
All PDE5 inhibitors work by blocking the enzyme phosphodiesterase type 5, which relaxes smooth muscle in blood vessels and allows increased blood flow to the penis. None of these medications create an erection on their own — sexual stimulation is required.
Sildenafil (Generic Viagra)
The original ED medication, now available as an affordable generic.
- Onset: 30-60 minutes
- Duration: 4-6 hours
- Best for: On-demand use, first-time users
- Take with food? No — high-fat meals significantly delay absorption
- Cost: As low as $2-5/dose through compounding
- Common side effects: Headache, flushing, visual changes (blue tint)
Tadalafil (Generic Cialis)
The "weekend pill" — known for its extremely long duration of action.
- Onset: 30 minutes to 2 hours
- Duration: Up to 36 hours
- Best for: Spontaneous sex, daily use option available
- Take with food? Yes — food does not significantly affect absorption
- Cost: As low as $1-3/dose through compounding
- Unique benefit: Also treats benign prostatic hyperplasia (BPH)
Tadalafil's 36-hour window eliminates the "timing anxiety" that many men find stressful with shorter-acting options. One dose Friday night = coverage through Sunday.
Daily Low-Dose Tadalafil
Taking 2.5-5mg tadalafil daily maintains consistent blood levels, producing spontaneous erections without needing to "time" anything. Many men and their partners prefer this approach for its naturalness.
- Cost: Around $30-60/mo
- Best for: Men in long-term relationships, men with frequent sexual activity
Compounded Combinations
Zera Health providers can prescribe compounded combinations that may include sildenafil + tadalafil for fast onset plus extended duration, or add apomorphine (works on brain dopamine receptors) for enhanced desire alongside the physical response.
Head-to-Head Comparison
| Factor | Sildenafil | Tadalafil (on-demand) | Tadalafil (daily) |
|---|---|---|---|
| Onset | 30-60 min | 30-120 min | No timing needed |
| Duration | 4-6 hours | 36 hours | Continuous |
| Food interaction | Yes (avoid fat) | None | None |
| Cost/month | ~$84 | ~$84 | ~$50 |
| Best for | Planned sex | Spontaneous sex | Regular activity |
Who Should Avoid These Medications
PDE5 inhibitors are contraindicated for men taking nitrates (nitroglycerin, isosorbide) for heart conditions, as the combination can cause dangerous blood pressure drops. Your provider will screen for this during consultation.
Getting a Prescription Online
Through Zera Health, the process is simple: complete a health intake, consult with a licensed physician, and receive your prescription shipped discreetly to your door. Most patients receive their first shipment within 5-7 business days.
Get ED treatment today — discreet, fast, affordable.
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