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Sildenafil vs TUDCA: side-by-side comparison

Ancillary

Viagra · Revatio · Sildenafil citrate

A short-acting phosphodiesterase type-5 (PDE5) inhibitor, the drug in Viagra (erectile dysfunction) and Revatio (pulmonary arterial hypertension). It relaxes vascular smooth muscle and enhances blood flow, most famously to the penis. Its ~4-hour half-life makes it a fast-on, as-needed drug rather than a low-dose daily one like tadalafil. On cycle it is used for erectile function, 'pumps' and vascular/blood-pressure support.

1.0/10 natty
Full breakdown →
VS
Ancillary

Tauroursodeoxycholic Acid · Taurursodiol

A bile acid used for extreme liver protection during oral steroid cycles. Provides hepatoprotection by improving bile flow and reducing cellular stress.

1.0/10 natty
Full breakdown →

1 / 10 natty scale / 1

Same lane

Both sit in the same class and are run for health. This is a like-for-like comparison: read the gaps as real trade-offs.

The tape

Core ratings

The same three rulers every entry on the site is scored with, read head to head.

SildenafilTUDCA
1.0

Natty scale

1 natural · 10 heavy

1.0
4.0

Effectiveness

Documented effect · of 5Δ0.5

4.5
2.0

Side-effect severity

Documented burden · of 5Δ1

1.0

Cost side

Body-load fingerprint

Where each one actually lands its strain, on the calculator's thirteen channels. Tap a row for what it means and which labs track it.

SildenafilTUDCA

Neither entry loads the body in a way worth flagging at typical protocols.

Bars show strain at each one's typical protocol, not your dose. For your numbers, run the calculator.

Logistics

The vitals

SildenafilTUDCA
Ancillary
Classmatch
Ancillary
Oral
Routematch
Oral
25-100 mg/dayED: as-needed, ~1 hour before activity (30 min to 4 h window), maximum once daily. PAH (Revatio): a fixed schedule, commonly 20mg three times daily.
Typical dose
250-1000 mg/dayDaily oral, split doses
~4 hours
Half-life
Not established
1-20 weeks
Typical run
4-8 weeks
Prescription only
Legal status
OTC supplement
Not prohibited
WADAmatch
Not prohibited

Benefit side

What each is for

Shared goals carry both dots; a goal with one dot belongs to that side alone.

SildenafilTUDCA
HealthPerformance

Run for

Erectile Dysfunction (FDA-approved)The original Viagra indication: improves blood-flow-dependent erectile function. Taken as-needed, typically about an hour before activity.
Erectile Function On CycleCounters cycle-related ED: from suppressive compounds ('deca dick' from nandrolone/trenbolone) or from crashed estrogen. A go-to support med, taken as-needed rather than daily.
Pulmonary Arterial Hypertension (FDA-approved)As Revatio, it lowers pulmonary arterial pressure and improves exercise tolerance in PAH, dosed on a fixed thrice-daily schedule (distinct from the as-needed ED use).
Pumps / Blood FlowEnhanced vasodilation gives fuller 'pumps'; some athletes use it hoping better muscle blood flow aids training, though efficacy is unclear and the effect is non-anabolic.

Documented upside

  • Reliable, fast-acting erectile-function support, including cycle-induced ED
  • Fast onset (roughly 20-30 minutes)
  • Improves blood flow / 'pumps'
  • FDA-approved and, since patent expiry, cheap as a generic
  • Non-hormonal; does not affect the HPTA

Run for

Liver ProtectionEssential support during hepatotoxic oral steroid cycles.
Liver RepairHelps repair liver damage from previous cycles.
Bile FlowImproves bile production and flow.

Documented upside

  • Significant liver protection
  • Improves bile flow
  • Reduces liver enzyme elevation
  • Can help repair existing damage
  • Generally well-tolerated

The downsides

Side effects, aligned

Each entry's documented side effects, sorted onto the same body systems so the gaps and the overlaps are visible. Tap any effect for the detail.

SildenafilTUDCA
Other documented effects

The exit

Hormonal fallout & recovery

What each does to your own hormone axis while on, and what leaving it costs.

SildenafilTUDCA
Not required
PCT
Not required
Support role
What sticks
Support role

Sildenafil

Not hormonal. No PCT required. It supports erectile function via blood flow but does not restore testosterone or fix the hormonal causes of low libido.

TUDCA

Not hormonal. This is a support supplement.

Read-out

How they separate

  1. 01

    Enhancement

    They land at almost the same point on the natty scale (1/10 vs 1/10): a similar distance beyond natural.

  2. 02

    Side-effect bill

    Sildenafil's documented side-effect severity is heavier (2/5 vs 1/5). The body-load fingerprint above shows where that weight actually lands.

  3. 03

    Coming off

    Neither requires PCT: both leave the natural testosterone axis running.

  4. 04

    Logistics

    typical runs are 1-20 weeks vs 4-8 weeks.

Generated from each entry's data file. Descriptive, not a recommendation; nothing here is medical advice.

Full breakdownSildenafil→Full breakdownTUDCA→

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