PDE inhibitors vs cog peptides for daily work focus

P
Joined 2026
25 posts
4/2/2026 · 414 views

Weighing daily low-dose tadalafil (vascular / generally systemic) vs Semax AM for cognitive work output.

They're obviously different tools. But I'm trying to figure out where to spend the budget if picking one. Anyone used both and formed a preference?

5 Replies

S
Joined 2026
47 posts
4/3/2026

Different jobs. Tadalafil isn't a focus tool for most people. If cognitive work output is the target, Semax is the more direct choice. If general vascular/recovery is the goal, tadalafil.

Focus stack
  • Semax · 600 mcg · AM intranasal · intranasal
  • Selank · 250 mcg · as needed · intranasal
H
Joined 2025
212 posts
hexaclinicContributor
4/4/2026

Low-dose tadalafil has a surprising portfolio (prostate, possibly cardiovascular, possibly cognitive via vascular mechanism) but the cognitive effect is indirect. Wouldn't compare head to head with a direct nootropic.

Q2 stack
  • CJC-1295 no DAC · 100 mcg · pre-bed · sub-Q
  • Ipamorelin · 200 mcg · pre-bed · sub-Q
  • BPC-157 · 500 mcg · 2x/day · sub-Q
P
Joined 2026
25 posts
4/6/2026

Going Semax for the acute cognitive goal. Will reconsider tadalafil for the vascular use case separately. Thanks.

C
Joined 2026
28 posts
4/8/2026

If budget stretches further a Cerebrolysin course twice yearly might sit on top of daily Semax better than either alone. Different time horizons.

M
Joined 2026
38 posts
21d ago

honestly if youre already thinking about stacking stuff you probably just need better sleep and to stop doomscrolling for 2 hours before work. ive run both and semax def moved the needle more but like, the difference evaporates pretty quick if your fundamentals are trash. tadalafil's nice for other reasons but yeah not a focus compound. just pick semax and see if it actually does anything for you, way cheaper than buying both to compare.

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