Here's the short version. PT-141 is the research name for bremelanotide. Vyleesi is bremelanotide with an FDA approval, a label and a maker that answers for its quality. Compounded PT-141 is the same molecule made to order by a pharmacy, with none of those. Which one fits depends on who you are, what your insurance does, and how much the paperwork matters to you.
Side by side
This table is the decision in one view. The top half is identical; the bottom half is where they split.
| Vyleesi (brand) | Compounded PT-141 | |
|---|---|---|
| Active ingredient | Bremelanotide | Bremelanotide |
| FDA review | Approved June 21, 2019 (NDA 210557) [2] | Not FDA-reviewed for safety, effectiveness or quality [3] |
| Who it's labeled for | Premenopausal women with acquired, generalized hypoactive sexual desire disorder | No label; a prescriber decides |
| Not labeled for | Men, postmenopausal women, enhancing sexual performance [1] | No label |
| Form | 1.75 mg/0.3 mL single-dose prefilled autoinjector [1] | Injection, per the programs that list a form |
| Trial evidence | Two 24-week phase 3 trials in 1,267 women [4] | No trials of any compounded product |
| Common side effects | Nausea 40%, flushing 20.3%, injection-site reactions 13.2%, headache 11.3% [1] | Same molecule, so the label's risks are the reference; product quality isn't independently checked |
| Who should avoid it | Uncontrolled high blood pressure or known heart disease | Same, by the same logic |
| Cost | Maker prices a 4-dose box; $0 for most commercially insured patients, $99 if coverage is denied [7] | $139–$328 a month across telehealth plans |
What's identical
The molecule. The label describes bremelanotide as a melanocortin receptor agonist [1]. Whether it comes in a brand pen or a pharmacy vial, it's the same compound, so the same effects and risks follow it.
That's also why the label matters even if you never touch the brand. It's the most complete public record of what bremelanotide does in people.
What's different: FDA review and quality
Vyleesi went through FDA review: trials, manufacturing inspection and a label that spells out who it's for. Compounded PT-141 skipped that. FDA says compounded drugs aren't FDA-approved, and it doesn't verify their safety, effectiveness or quality before they're sold [3].
In practice, that means two unknowns with a compounded vial: exactly how much bremelanotide is in it, and how clean it is. A licensed pharmacy is supposed to get both right. You're trusting that pharmacy instead of an FDA-reviewed process.
Who each one is for
Vyleesi's label is narrow. It's for premenopausal women whose low desire developed after a time without problems, happens in all situations, causes real distress, and isn't explained by another condition, a relationship problem or a medication. The label says plainly it isn't for men, for women after menopause, or to enhance sexual performance [1].
Compounded PT-141 has no label of its own, so a prescriber may use it outside that group. That's off-label prescribing. The trials behind Vyleesi don't cover those uses, so there's no FDA-reviewed evidence for them.
How big was the effect in the trials that do exist? In the two phase 3 studies, bremelanotide raised a desire score and lowered a distress score versus placebo by small but statistically significant amounts. The women in those trials averaged 39 years old, and nearly all were treated at US sites [4]. A separate re-analysis by an outside researcher, using FDA's application data, found similar numbers but far more dropouts from side effects on the drug, and questioned how useful it is [5].
Side effects, and who should avoid both
- Nausea was the big one: 40% of patients, 13% needed anti-nausea medicine and 8% stopped because of it. For most, it improved by the second dose [1].
- Blood pressure rises briefly after each dose, by up to about 6 points systolic, and heart rate dips. It usually settles within 12 hours [1].
- Darkened skin patches on the face, gums or breasts happened in 1% of trial patients, more often in people with darker skin. They didn't always fade after stopping [1].
- Other medicines. It can slow stomach emptying and affect how oral drugs are absorbed. The label says to avoid it with oral naltrexone products used for alcohol or opioid addiction [1].
These numbers hold up across the wider program. A safety review of 43 completed studies with about 3,500 participants found the same pattern: nausea, flushing and headache were most common, and nausea was the main reason people stopped. Blood pressure rises on ambulatory monitoring were small and passed [6]. Several of its authors work for companies that developed or sold the drug, so read it alongside the label.
The label says not to use it with uncontrolled high blood pressure or known heart disease [1]. Since the molecule is the same, the same caution applies to compounded PT-141.
Cost and insurance
The two are priced in different units, so compare carefully. Telehealth programs sell compounded PT-141 on monthly plans. Vyleesi's maker prices a box of four single-dose pens.
The maker says most commercially insured patients pay $0 for a 4-dose box with its copay program, and that a 4-dose box costs $99 if insurance coverage is denied. People on government insurance such as Medicaid or TRICARE aren't eligible for its assistance [7].
| Program | Form listed | Monthly price |
|---|---|---|
| HealthRx | Not restated on the plan page | $170Monthly, with prepaid 3-, 6- and 12-month plans |
| AgelessRx | Injection | $199Lower first month, then monthly |
| RxSpan MD | Injection | $199Monthly |
Also offered by (no standing monthly price published): Bodybuilding Health. Sorted by monthly price. Bodybuilding Health shows a starting price without saying how it's billed.
If you have commercial insurance and fit the label, the brand may cost you less than a compounded plan. If you don't fit the label or your plan won't cover it, the math changes. AgelessRx or HealthRx compares two of these programs line by line.
Questions to ask a prescriber
- Do I fit Vyleesi's label, and would my insurance cover it?
- If you'd prescribe compounded PT-141 instead, why, and which pharmacy makes it?
- Is my blood pressure controlled well enough for bremelanotide?
- Do any of my current medicines interact with it?
- Is there a hormone issue behind this that's worth checking first?
For that last question, our HRT explainer and our hormones shortlist cover the other side of the picture. Or start with the 30-second match.