The Libido & Sexual Function Blueprint
Four arms — desire and function are not the same problem
Everything on this page is free. The stack, why each pick beat its alternatives, every option, the bloodwork and the safety lines. The week-by-week schedule and the decision rules are the members half.
Four separable systems, and the arm you need is decided by two questions you already know the answers to. Do you want to? If desire itself is absent, that is central — melanocortin and dopamine signaling — and no vascular drug touches it. Can you? If desire is intact but the hardware is not responding, that is vascular, and it is also the single most useful early warning sign in cardiovascular medicine — penile arteries are narrower than coronary arteries and they fail first, typically three to five years earlier. Is the hormonal substrate there? Testosterone, estrogen, prolactin and thyroid. Or is something else eating it? Stress, sleep, medication, alcohol and relationship — which is the arm nobody wants and the one that most often holds the answer.
Can you run all of them? Yes - and here is what it costs
This is a general protocol. You make the final call on how much of it to run — or have it built around your labs.
Which of these 4 is actually you?
This tells you where your biggest leverage is — where to start, not where to stop. Read the But line too: it is what each lane cannot do for you, which is the part a list of options never tells you.
Before any of it — the foundation
These four are not a disclaimer at the bottom of the page. They are the reason the rest of it works, and every one of them is free.
Growth hormone is released in pulses during deep sleep, insulin sensitivity is measurably worse after one bad night, and appetite regulation collapses without it. Every compound below works through a system that sleep already governs. This is not filler advice — it is the highest-leverage item on the page and it is free.
The single dietary variable with the most consistent evidence behind it for body composition, in both directions — building and preserving. Under-eating protein while running anything anabolic is paying for a signal with no substrate to act on.
Nothing here substitutes for mechanical tension. Compounds change how well you recover from and adapt to training; they do not replace the stimulus. A protocol run without training reliably produces the side effects and not the results.
Non-exercise activity is the largest and most variable component of daily energy expenditure, and it is the one that quietly falls when you start dieting. Tracking it stops the metabolic adaptation people blame on their thyroid.
The stack
The PDE5 inhibitors are among the best-evidenced drugs in medicine — decades of use, enormous trial bases, well-characterized safety. PT-141 is FDA-approved for hypoactive sexual desire disorder in premenopausal women, so the central arm has a real regulatory footing too. The botanical lane is more mixed. Maca has reasonably consistent randomized data on desire without moving testosterone at all, which is a genuinely interesting finding. Tongkat ali, panax ginseng and pycnogenol have real but smaller trials. Horny goat weed contains icariin, a weak PDE5 inhibitor, at doses no supplement realistically delivers.
Each pick names what it was chosen over and why. That is the difference between a blueprint and a list — if you disagree with a choice, the alternative is right there and swapping it does not break the rest.
Peptides 1
Short amino-acid chains that signal rather than force. Almost all are injected or intranasal, they need reconstituting, and they are the reason most people are on this site.
Bremelanotide is a melanocortin receptor agonist acting in the hypothalamus — it works upstream, on desire itself, rather than on blood flow. That makes it the only mechanism here that addresses the complaint of not being interested. It is FDA-approved for hypoactive sexual desire disorder in premenopausal women.
Melanotan-2 hits the same receptor family and was the compound the sexual effect was discovered on — the erectile response was the unexpected side effect in tanning research, and PT-141 was developed from it deliberately. PT-141 is the base because it is far more selective. MT-2 also drives MC1R, which is the tanning effect, and that means darkening of existing moles and new pigmented lesions — a real problem when melanoma surveillance depends on noticing exactly that change.
Stack this arm deeper5 optional add-ons
Each of these sits in this same pathway, so it starts the week this pathway starts. Swapping one in for the pick above does not change the schedule.
A dopamine agonist that suppresses prolactin — high prolactin is one of the few genuinely findable, genuinely fixable causes of lost libido, and it is on the panel above for that reason. It also shortens the refractory period.
The trade-off Prescription. Cardiac valve concerns at the high doses used in Parkinson's, and impulse control problems are a known dopaminergic effect. Only indicated if prolactin is actually raised.
The bonding and orgasm peptide — it acts on connection and arousal intensity rather than on drive, which is a different complaint and one the other lanes do not address.
The trade-off Very short half-life, and intranasal delivery to the brain is contested. Effects are subtle and heavily context-dependent.
Improves desire in randomized trials without changing testosterone, estrogen or LH at all — which is a genuinely odd and well-replicated finding, and it means it works on a route nothing else here uses.
The trade-off Needs 1.5–3 g daily for weeks; it is not acute. Black, red and yellow varieties appear to differ and labels rarely say which.
A natural L-DOPA source — direct dopamine substrate, which is the neurotransmitter of wanting rather than liking. It also lowers prolactin modestly.
The trade-off Tolerance and receptor downregulation with continuous use — this is a cycled compound. Interacts with MAO inhibitors.
Sits above GnRH in the hierarchy and has human imaging data showing activation of brain regions governing sexual and emotional processing — it touches both the central and hormonal arms at once.
The trade-off Research grade, very short half-life, and no established protocol for this use.
Small molecules 2
Orally active compounds, most of them with a prescription history and a real clinical evidence base. Less exciting than the peptides and frequently better evidenced.
Vascular & erectile functionTadalafil5 options
5 options — 0 to swap in, 5 to stack ontap to collapse
Hormonal substrate — testosterone, estrogen, prolactin, thyroidEnclomiphene5 options
5 options — 0 to swap in, 5 to stack ontap to collapse
Bacteriostatic water
4 of the compounds in this stack ship as a freeze-dried powder and have to be reconstituted before they are anything. Bacteriostatic water is the diluent — sterile water with 0.9% benzyl alcohol, which is what lets a vial be drawn from more than once. It does not come with the vial, and it is the one item on this page you will buy again every time. Work out your dilution →
Running several vials at once? Flawless Compounds sells a vial case — optional, but it is what keeps a fridge shelf of half-used vials from becoming a guessing game.
Health supplements & substrate
The floor underneath the compounds. Cheap, well tolerated, and the part that decides whether anything above it has a fair chance — a secretagogue on a magnesium deficiency is a rounding error.
Stress, sleep and the things that quietly kill desireAshwagandha5 options
5 options — 0 to swap in, 5 to stack ontap to collapse
The 12-week schedule
Phase one is below in full, free, so you can see exactly what starting looks like. What changes, and when, is the part you are paying for — and it is what decides whether 12 weeks of effort compounds or just runs in parallel.
Total and free testosterone, SHBG, estradiol, prolactin, LH/FSH, thyroid, lipids, HbA1c.
Draw testosterone before 10 a.m. and fasted, twice on separate days. It varies by 20–30% across a day and a single afternoon draw has started a lot of unnecessary treatment. Prolactin is the one that gets skipped and it is the one with a complete, fixable answer — a pituitary adenoma is not rare and it presents exactly like this.
Sleep, alcohol, the medication list. Start the stress arm.
Nothing new. Cam moved the whole core stack to week 1 on sign-off; there is nothing left to stagger.
Same panel, plus a CBC if anything hormonal was started.
The stress arm never stops being relevant.
The rest of the schedule is inside Skool
- The remaining 4 phases in full — what each one is for and what it changes
- The dose for every item in every phase — they are not the same across phases, and that is the point
- The 5 decision rules — what to change when it is not working, and how to tell a real stall from noise
Everything above this line is free and stays free — the compounds, why each one is here, what to test, and the lines I would stop at. Each compound’s dose is free on its own page too. What you cannot get anywhere else is the order, and the order is what decides whether 12 weeks of effort compounds or just runs in parallel. That is the half worth paying for, so that is the half behind the door.
Unlock the schedule — $10/mo →Bloodwork
Prolactin is the most valuable thing on this panel and the most often omitted. Raised prolactin suppresses libido directly and is a common presentation of a pituitary adenoma — findable, treatable, and completely missed if only testosterone is drawn. Free testosterone matters more than total, because SHBG determines how much is available and SHBG rises with age, thyroid excess and low insulin. A normal total with a high SHBG is functionally low and reads as fine. Use the sensitive estradiol assay in men — the standard immunoassay is unreliable at male concentrations. And use the lipid panel and HbA1c: erectile dysfunction is endothelial dysfunction, and it predicts cardiovascular events by three to five years. That is the most important sentence on this page.
Before you start
Everything, drawn before you start. This is the one that decides which pathway is actually yours - and the only one you cannot go back and collect later.
Around week 8
The short list, drawn while you are running it. Not a progress report - it is the draw that catches the things that go wrong quietly.
After
Drawn at the end, against your own baseline. This is what turns the protocol into information rather than a feeling.
All three are drawn at Quest, 2,000+ US locations, no doctor visit, HSA/FSA eligible. Prefer to pick and choose? Every marker above links to its own page, and the panel builder assembles any combination.
Adjusting it
A protocol you cannot adjust is a protocol you abandon. 5 situations come up on nearly every run of this — desire is fine but response is not, response is fine but you do not want to, you are on an SSRI and testosterone came back low-normal and you feel terrible, and 1 more. Each one has a specific answer, and the wrong answer to a stall is the reason most people end up on six compounds that each do nothing.
The 5 decision rules are inside
The situations above, each with what to change, what to leave alone, and how to tell a real stall from noise. $10/mo.
Unlock the decision rules →The lines I'd stop at
- An erection lasting more than four hours. Priapism is a urological emergency and it causes permanent damage — it does not resolve by waiting.
- Sudden vision or hearing loss on a PDE5 inhibitor. Both are rare and both need same-day assessment.
- Never combine a PDE5 inhibitor with any nitrate — including recreational poppers. The blood pressure drop is severe and it has killed people.
- Any new or changing pigmented lesion or mole on melanotan-2. That is the specific risk the MC1R activity creates, and it is the one to act on immediately.
- Chest pain during sex. Sexual activity is a cardiac stress test, and that symptom in that context is the one not to explain away.
- Persistent headaches with visual field changes and raised prolactin. That combination points at a pituitary adenoma large enough to press on the optic chiasm.
It is built for the common case, not for you specifically. Compound selection and dosing genuinely do change person to person — training age, bloodwork, what you have run before, what you react to. Adjust it against your own numbers using the panels above, or if you want it built around your labs rather than the average, that is what 1-on-1 coaching is for. Between the two: fifteen minutes with Cam is $75.
See every option for this goal → · Open the Vault