PT-141 dosing thread — let's compile what actually works vs 'just take 2mg and hope'

Your dose curve matches what I hear from most men. 0.75–1.25mg is the working window for the majority. The 2mg advice online is a relic of older sourcing where potency was unreliable. With decent-purity product, 1mg is plenty.

Start at 0.5mg. Literally always. Even if 'everyone online says 1.75.' You cannot undo the nausea once it's on you, and going up by 0.25mg per session is trivial.

Female partner and I both use it. Her effective dose is about 40% lower than mine (0.6mg vs 1mg) and the side effect profile kicks in at correspondingly lower doses. Not sure if it's body weight or sex but it's consistent.

Timing: the 2hr pre-use window is real for sub-q. Nasal is faster (~30–45 min) with lower peak plasma. Bioavailability for nasal is roughly 20–25% of sub-q based on the published PK work, so nasal doses need to be higher to hit the same effect window.

@theoretic thanks — that's the cleanest nasal summary I've seen.

PDE5 inhibitor + PT-141 combo: not redundant, they hit different parts of the arousal pathway (central vs peripheral). Can be complementary. Can also stack cardiovascular load. Start one at a time, find dose, then combine cautiously.

BP monitoring is underrated. Melanocortin agonism transiently raises BP. If you have baseline hypertension or you're on anything that stacks with it (stimulants, sympathomimetics), the risk profile changes. Not a deal-breaker but worth knowing.

I use it for the PDE5-refractory cases. Men who don't respond to Cialis often do respond to PT-141 because the issue is central not peripheral. Matters for diagnosis as much as treatment.

Flushing is the most reliable side effect. If you don't flush you're probably under-dosed or the product isn't good.

@syringe_shy uncomfortable. Not dangerous at standard doses in a healthy person. If you have rosacea it's going to be ugly for a couple hours.

Is the flushing dangerous or just uncomfortable?

Don't mix with alcohol. The nausea vector is a lot worse and the BP response becomes unpredictable. Learned the hard way.

Nasal has been fine for me at 2–3mg sprayed (which matches the ~25% bioavailability math for my 1mg sub-q equivalent). Faster onset, less nausea, slightly weaker peak effect.

Don't use it daily. Tachyphylaxis is real with melanocortin agonists. 1–2x/week max, take long gaps. Treat it like an event drug not a daily.

Vyleesi label dose is 1.75mg and the label specifically notes the nausea rate. That's FDA-tested, and still a third of women on-label report nausea. Community 'start at 2mg' advice is ignoring the label of the only approved version.

Best thread on this compound I've seen here. Pinning in my personal notes.

Saved.

Yeah 1mg subq is basically my floor too, tried it lower and honestly felt like placebo. The nasal stuff I messed with for like 3 weeks and it's way less nausea but the effect is noticeably softer, so ended up going back to subq. Also second the tachyphylaxis thing, I went twice in one week once and the second time did absolutely nothing, took like 10 days off and it worked again. BP thing is real though, mine spiked to like 155/95 at 1.5mg and that's not something I'm cool with repeatedly, so I'm basically locked into 1mg or skip it.