Quattro
From $79.99/5 pack
Four actives, one fast-absorbing shot. Quattro delivers four performance compounds in a rapid-absorbing 2 ml liquid.
No insurance required
Licensed US pharmacies
Fast, discreet shipping
Apomorphine · Sildenafil · Tadalafil · Vardenafil
Liquid format, no tablet to swallow
Triple PDE5 support plus central arousal action
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Available only if prescribed by a licensed provider after an online consultation.
Why liquid multi-active
Multiple PDE5 scaffolds show distinct enzyme kinetics in vitro.
Slower scaffold
Faster scaffold set
Onset of enzyme inhibition in assay.
Time-to-inhibition experiments in PDE5 assays compare how quickly different inhibitors reduce catalytic rate after addition. These are kinetic enzymology readouts used to differentiate scaffolds in the lab.
Source: PDE5 inhibitor kinetic characterization literature (sildenafil, vardenafil, tadalafil enzymology).
Educational research summary only. Schematics illustrate published pharmacology / pharmaceutics concepts and are not clinical results, performance claims, or medical advice.
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Begin your free online intake. A licensed provider reviews every order, and treatment ships only if prescribed.