Vyleesi vs Addyi: How These Two HSDD Treatments Compare

Vyleesi and Addyi are the two prescription drugs the FDA has approved to treat acquired, generalized hypoactive sexual desire disorder (HSDD) in women, and they are very different products. Addyi (flibanserin) is a daily tablet taken at bedtime, while Vyleesi (bremelanotide) is an injection used about 45 minutes before anticipated sexual activity. Neither is a cure, neither works for everyone, and both require a prescription and a conversation with a healthcare professional.

Vyleesi vs Addyi at a Glance

The table below summarizes the practical differences most patients ask about first.

Feature	Addyi (flibanserin)	Vyleesi (bremelanotide)
FDA approval	2015	2019
Form	Oral tablet	Subcutaneous autoinjector
Dosing	100 mg once nightly at bedtime	1.75 mg as needed, at least 45 minutes before sex
Frequency limit	One dose every day	One dose per 24 hours, max 8 doses per month
Onset	About 4 weeks, full effect by 8 weeks	Within roughly 45 minutes to a few hours per dose
Common side effects	Dizziness, sleepiness, nausea, fatigue, insomnia	Nausea, flushing, headache, injection-site reactions
Alcohol	Wait 2 hours after 1-2 drinks; skip dose after 3+ drinks	No alcohol restriction in the label
Blood pressure	Can lower blood pressure; fainting risk	Brief rise in blood pressure; contraindicated with heart disease
Approved population	Premenopausal women; label later expanded to postmenopausal women	Premenopausal women only

How Vyleesi and Addyi Work Differently

Addyi changes signaling in the brain, acting as an agonist at 5-HT1A receptors and an antagonist at 5-HT2A receptors. Because it shifts brain chemistry gradually, it is taken every night rather than before sex. Most women who respond notice a difference around week four, and clinicians typically reassess at eight weeks.

Vyleesi activates melanocortin receptors, a completely different pathway, and is used on demand. One 1.75 mg dose is injected under the skin of the abdomen or thigh at least 45 minutes before sexual activity, with no more than one dose in 24 hours and no more than eight doses per month.

If you have run across the phrase "addyi and vyleesi tablet" while researching, that wording is misleading. Vyleesi does not come as a pill or tablet; only Addyi is an oral tablet, and Vyleesi is a single-use autoinjector.

Side Effects and Safety Differences

Most vyleesi side effects are temporary, but the list is longer than many people expect.

• Nausea — the most common complaint, reported by roughly 40% of participants in clinical trials; injecting into the abdomen may cause less nausea than the thigh.
• Flushing, headache, and injection-site reactions — usually short-lived.
• Focal hyperpigmentation — dark patches on the face, gums, breasts, or genitals that may not fade after the drug is stopped.
• Blood pressure and heart rate changes — a brief rise in blood pressure and a drop in heart rate after each dose.

Addyi's most common side effects are dizziness, sleepiness, nausea, fatigue, insomnia, and dry mouth. The more serious concern is low blood pressure and fainting, particularly when alcohol is involved.

Alcohol is one of the clearest differences between the two drugs. Addyi's label tells patients to wait at least two hours after one or two standard drinks before taking the bedtime dose and to skip the dose entirely on nights with three or more drinks. Vyleesi carries no alcohol restriction.

Cost, Insurance, and Access

List prices for both drugs run into the hundreds of dollars per month, and Vyleesi is usually the more expensive option because every dose is a separate single-use autoinjector.

Before you commit, it is worth understanding vyleesi cost under your specific plan, including whether the drug sits on a specialty tier. Many insurers cover one or both medications only with prior authorization or step therapy, and some cover neither.

Manufacturer savings programs can reduce copays for commercially insured patients, sometimes to $25 or less per month. Patient assistance programs exist for people who qualify, and telehealth platforms focused on women's sexual health often handle prior authorizations on your behalf.

Who Should Avoid Each Drug

Addyi

Addyi is not appropriate for people with liver impairment or those taking strong CYP3A4 or CYP2C19 inhibitors, because those interactions can raise drug levels and worsen hypotension. Patients are also advised not to drive or do anything requiring full alertness for at least six hours after a dose.

Vyleesi

Vyleesi is contraindicated in people with uncontrolled high blood pressure or known cardiovascular disease. Vyleesi is approved only for premenopausal women, and it should be stopped if focal hyperpigmentation appears.

Neither drug is approved for men, and neither should be used during pregnancy or while breastfeeding.

Beyond the Two: Other Things People Try

Bremelanotide was studied for years as PT-141, so older comparisons of pt-141 nasal spray vs injection still circulate in the research literature. The nasal version never received FDA approval for HSDD, and only the injectable form is currently marketed.

Some people also ask about research peptides sold online. Forum debates about bpc-157 vs cjc 1295 have nothing to do with FDA-approved HSDD treatment, and those products are not tested or approved for sexual desire in women.

Non-drug options matter as well. Sex therapy, couples counseling, treating depression or anxiety, reviewing medications that blunt libido such as SSRIs, and managing menopause symptoms can all change desire over time.

For most people, the choice between Vyleesi and Addyi comes down to whether they prefer a nightly pill or an as-needed injection, along with cost, side effects, and personal medical history. A clinician who knows your health history is the right person to make that call.

COMMON QUESTIONS

Frequently Asked Questions

Is Vyleesi better than Addyi?

There is no head-to-head trial showing that either drug is more effective than the other. In separate studies, both improved desire and satisfying sexual events modestly compared with placebo, and individual response varies widely. The better choice usually comes down to dosing preference, side effects, and cost.

Can you take Addyi and Vyleesi together?

The combination has not been studied, and the FDA has not approved the two drugs for use together. Because they act on different systems and both can affect blood pressure, using them at the same time could increase risk. A healthcare professional should decide whether either medication, used alone, is appropriate.

How much do Vyleesi and Addyi cost without insurance?

List prices for both medications are in the hundreds of dollars per month, and Vyleesi typically costs more because it is sold as single-use autoinjectors. Manufacturer copay programs can lower costs sharply for people with commercial insurance. Without coverage or assistance, many patients pay full list price.