Alprostadil (Caverject/MUSE) Cost in Washington 2026

What Is Alprostadil and How Is It Used for Erectile Dysfunction?

Alprostadil is a synthetic prostaglandin E1 (PGE1) that relaxes smooth muscle in the corpus cavernosum, increases arterial inflow, and produces an erection within 5 to 20 minutes of administration. It is FDA-approved in two delivery forms: an intracavernosal injection marketed as Caverject (Pfizer) and Caverject Impulse, and a urethral suppository called MUSE (Medicated Urethral System for Erection). Both require a prescription in Washington state.

The mechanism is direct. Alprostadil binds EP2 and EP3 receptors on vascular smooth muscle, triggering cyclic AMP production that bypasses the nitric oxide pathway entirely [1]. This makes it effective in men for whom oral phosphodiesterase-5 inhibitors such as sildenafil or tadalafil have failed, including those with severe vascular disease, post-prostatectomy nerve damage, or diabetes-related neuropathy.

Dosing is on-demand rather than daily. Caverject is self-injected directly into the corpora cavernosa at doses ranging from 2.5 mcg to 40 mcg per injection, titrated in a clinical setting before home use. MUSE suppositories come in 125 mcg, 250 mcg, 500 mcg, and 1 to 000 mcg strengths and are placed transurethrally. The FDA prescribing label specifies a maximum of one injection per 24 hours and no more than three injections per week [2].

In the key Linet et al. trial published in the New England Journal of Medicine (N=1,511 men with chronic erectile dysfunction), intraurethral alprostadil produced erections sufficient for intercourse in 64.9% of at-home attempts versus 18.6% with placebo [3]. Adverse effects included penile pain (reported by 32% of alprostadil users), urethral burning, and a 3.3% incidence of prolonged erection requiring intervention.

Alprostadil Cash Price in Washington State (2026)

The retail cash price for brand-name alprostadil in Washington runs approximately $600 per month in 2026. Generic alprostadil injection has entered the market and can be found at large chain pharmacies in Seattle, Spokane, Tacoma, and Bellevue for roughly $200 to $350 per month depending on dose and quantity, though pricing varies by location and changes frequently [4].

Prices differ by formulation. Caverject Impulse dual-chamber syringes (2-pack, 10 mcg or 20 mcg) list near $300 to $400 per pack at Washington retail pharmacies. MUSE suppositories in the 500 mcg or 1 to 000 mcg strengths cost approximately $250 to $400 for a package of six. Because alprostadil is on-demand rather than a monthly maintenance drug, actual spend depends entirely on frequency of use.

GoodRx and similar discount programs show Washington-specific pricing as low as $180 to $220 for generic alprostadil 20 mcg injection (6 vials) at Costco Pharmacy locations in the state, representing the lowest readily available cash-pay tier [5]. Prices at independent and compounding pharmacies vary and require a direct quote.

Washington Alprostadil Cost Tiers (2026 Reference)

| Option | Estimated Monthly Cost | Notes | |---|---|---| | Brand Caverject (retail) | ~$600 | Pfizer list price | | Generic alprostadil injection | ~$200, $350 | Varies by pharmacy | | MUSE urethral suppository | ~$250, $400/6-pack | On-demand; per-pack pricing | | GoodRx / discount card | ~$180, $220 | Costco and select chains | | Compounded alprostadil (503A) | Variable; may approach $0 | Requires 503A pharmacy and valid Rx | | Washington Medicaid (with PA) | $0, $3 copay | Prior authorization required |

Washington Medicaid Coverage for Alprostadil

Washington Apple Health (Medicaid) covers alprostadil for erectile dysfunction, but only with a prior authorization demonstrating that the condition is refractory. The Washington State Health Care Authority's Preferred Drug List classifies alprostadil as a covered drug in the genitourinary agents category, subject to PA review [6].

Prior authorization criteria under Washington Apple Health generally require documentation of an organic etiology (vascular, neurogenic, or endocrine), an adequate trial of at least one oral PDE5 inhibitor (unless contraindicated), and a prescribing provider's attestation of medical necessity. Once approved, enrollee cost-sharing is minimal, typically a $1 to $3 copay per fill under the Apple Health formulary structure [7].

Washington Medicaid does not cover alprostadil prescribed for situational or psychogenic erectile dysfunction without additional clinical documentation. The PA denial rate for first submissions is not publicly reported at the state level, but national data from the Kaiser Family Foundation shows that Medicaid PA denial rates across all drug classes average approximately 17% on initial submission, with most overturned on appeal [8].

Providers submitting PA requests should include the ICD-10 code N52.01 (erectile dysfunction due to arterial insufficiency) or the appropriate organic etiology code, a treatment history noting PDE5 inhibitor failure or contraindication, and the intended dose form. Telehealth providers licensed in Washington can submit PA requests on the same basis as in-person providers.

Compounded Alprostadil in Washington: Is It Legal?

Yes. Washington state permits licensed 503A compounding pharmacies to prepare alprostadil for individual patients when a valid prescription exists and the formulation is not commercially available in an equivalent form or concentration [9].

The distinction between 503A and 503B compounding matters here. A 503A pharmacy compounds for individual patient prescriptions and operates under state pharmacy board oversight (the Washington State Department of Health regulates Washington pharmacies). A 503B outsourcing facility compounds in bulk for healthcare facilities without patient-specific prescriptions and is FDA-registered. For retail patients in Washington, the relevant pathway is 503A.

Compounded alprostadil formulations commonly dispensed in Washington include alprostadil alone at custom concentrations, and combination preparations such as bi-mix (alprostadil plus papaverine) or tri-mix (alprostadil, papaverine, and phentolamine). These combinations are not FDA-approved as fixed-dose products, but individual components are legal to compound under 503A rules when medically indicated [10].

Cost of compounded alprostadil from a Washington 503A pharmacy depends heavily on insurance. Some commercial plans and Medicare Advantage plans with compound drug benefits cover these preparations at standard specialty-tier copays. Without insurance, a 5 mL vial of tri-mix (enough for multiple doses) typically costs $80 to $150 from a Washington compounding pharmacy, compared to $300 or more for an equivalent number of branded Caverject doses.

The Washington State Pharmacy Quality Assurance Commission maintains a searchable database of licensed in-state pharmacies. Patients should verify 503A licensure before purchasing any compounded injectable product [11].

Insurance Coverage for Alprostadil in Washington

Commercial insurance coverage for alprostadil in Washington varies by plan design. The Affordable Care Act does not mandate coverage for erectile dysfunction drugs, so most individual and small-group plans exclude them unless the employer or plan sponsor opts in [12].

Plans that do cover alprostadil most commonly classify it as a Tier 3 or Tier 4 specialty drug, with copays ranging from $60 to $150 per fill for insured patients. Large employers in Washington, including several major technology companies headquartered in the Seattle metropolitan area, have begun including ED medications in their pharmacy benefits in response to competitive recruitment pressure, though exact plan details vary by employer.

Medicare Part D generally excludes drugs used "for the treatment of erectile dysfunction" by statute under 42 U.S.C. §1395w-102(e)(2) [13]. This exclusion applies to both brand and generic alprostadil under standard Part D plans. Some Medicare Advantage plans with supplemental pharmacy benefits have begun covering PDE5 inhibitors; whether they extend the same benefit to alprostadil injections depends on the individual plan's supplemental formulary.

Washington state insurance regulations under RCW 48.43 require health carriers offering individual and group plans to provide a summary of formulary exclusions at enrollment. Patients should request a written formulary exception if their prescriber documents medical necessity and PDE5 inhibitor failure [14].

Pfizer Caverject Savings Card. Pfizer offers a copay savings card for commercially insured patients that can reduce out-of-pocket cost on Caverject to as low as $0 per fill, subject to eligibility restrictions. The card is not valid for Medicare, Medicaid, or other government-funded coverage. Washington patients can enroll through Pfizer's patient assistance portal; the savings card caps monthly benefit at a defined dollar amount that Pfizer adjusts annually [15].

Telehealth Prescribing of Alprostadil in Washington

Washington state fully permits telehealth prescribing of alprostadil. State law under RCW 70.290 and the Washington Medical Commission's telehealth rules allow prescribers licensed in Washington to conduct an initial evaluation via synchronous audio-video telehealth and issue a prescription for alprostadil without a prior in-person visit, provided the standard of care is met [16].

The practical requirement is a thorough clinical evaluation. Prescribers are expected to take a complete sexual and medical history, screen for cardiovascular risk, review current medications for drug interactions (alprostadil can potentiate hypotension when combined with antihypertensives), and document the clinical rationale for choosing alprostadil over or alongside oral therapy [17].

The first injection of Caverject is traditionally performed in a supervised clinical setting so that dose titration can occur and prolonged erection can be managed immediately if it arises. Some Washington telehealth providers schedule an in-office visit at a partnering clinic for this titration step, then manage follow-up remotely. MUSE suppositories, which carry a lower risk of priapism than intracavernosal injection, may be initiated with detailed telehealth coaching without a mandatory in-person visit in lower-risk patients.

Washington's 1115 Medicaid waiver includes telehealth services, meaning Apple Health enrollees can access telehealth prescribing for alprostadil through any Apple Health-contracted provider offering synchronous telehealth [18].

Washington Alprostadil Discount Programs and Patient Assistance

Several cost-reduction pathways exist for Washington patients who do not qualify for Medicaid and cannot afford the $600 retail price.

Pfizer RxPathways. Pfizer's patient assistance program provides Caverject at no cost to uninsured or underinsured patients with household income below 400% of the federal poverty level. Washington patients apply at pfizerrxpathways.com with income documentation and a valid prescription [19].

NeedyMeds and RxAssist. These nonprofit databases aggregate pharmaceutical manufacturer assistance programs. Washington patients who are uninsured and do not meet Pfizer's income threshold may find generic alprostadil through independent assistance programs listed on NeedyMeds [20].

Washington Prescription Drug Program (WPDP). The state-run WPDP discount card, administered through the Washington State Health Care Authority, provides negotiated discounts at participating pharmacies for residents who lack prescription coverage. Savings on alprostadil under WPDP typically range from 10% to 25% off retail, which reduces a $600 bill to approximately $450 to $540, a modest but real reduction [21].

GoodRx Gold. GoodRx Gold membership ($9.99/month) provides additional discounts beyond the free GoodRx tier at many Washington pharmacies. Generic alprostadil is among the drugs where Gold pricing shows meaningful savings versus the standard discount tier [22].

Veterans Affairs. Washington veterans enrolled in VA healthcare receive alprostadil through the VA National Formulary when prescribed by a VA provider for service-connected or clinically appropriate erectile dysfunction. The VA Federal Supply Schedule price for alprostadil is substantially below retail, and veteran copays are typically $11 for a 90-day supply [23].

Clinical Context: Who Is a Candidate for Alprostadil in Washington?

The American Urological Association 2018 guideline on erectile dysfunction recommends alprostadil intracavernosal injection as a second-line treatment option after PDE5 inhibitor therapy, or as a first-line option when PDE5 inhibitors are contraindicated [24]. Washington prescribers follow this guideline framework.

Contraindications include a history of hypersensitivity to alprostadil, conditions predisposing to priapism (sickle cell anemia, multiple myeloma, leukemia), penile anatomical deformities that preclude safe injection, and concurrent use of vasoactive drugs not coordinated with a physician [25].

The AUA guideline states directly: "Intracavernous injection therapy is a reasonable choice as a first-line therapy for men who have failed or cannot use oral PDE5 inhibitor therapy" [24]. This language supports Medicaid prior authorization documentation in Washington when PDE5 inhibitor failure is documented.

Men with post-radical prostatectomy erectile dysfunction represent a large clinical subgroup in Washington. Data from the Journal of Urology show that alprostadil intracavernosal injection produces erections sufficient for intercourse in approximately 70% of post-prostatectomy patients at optimal doses, compared to roughly 35 to 40% with tadalafil alone [26]. Early penile rehabilitation protocols after prostatectomy frequently include alprostadil to preserve erectile tissue oxygenation.

Cardiovascular safety is generally favorable. Alprostadil does not require the cardiac caution that nitrate co-administration triggers with PDE5 inhibitors, making it a usable option in some patients who are also on nitrate therapy, though any patient with severe cardiovascular disease should be evaluated before starting any ED therapy [27].

Practical Steps for Washington Patients in 2026

Getting alprostadil in Washington in 2026 follows a defined sequence. A telehealth or in-person visit with a licensed Washington prescriber establishes diagnosis, rules out contraindications, and generates a prescription. The prescriber selects dose form (injection versus urethral suppository) based on patient preference, dexterity, and clinical history.

The pharmacy step matters enormously for cost. Patients should call at least three pharmacies, including at least one compounding pharmacy, before filling the prescription. A 503A compounding pharmacy can often provide a custom concentration of alprostadil or tri-mix at lower cost than branded Caverject, and many Washington compounders offer telemedicine-friendly workflows where the prescription can be sent electronically and the medication shipped to the patient's home.

Washington Medicaid enrollees should have the prescriber submit a PA request before the pharmacy fill attempt. PA approval can take 3 to 7 business days under Apple Health timelines, but urgent-request pathways exist for clinical situations requiring faster access [28].

If using a Pfizer savings card, confirm that the dispensing pharmacy is a card-accepting retail or specialty pharmacy. Not all independent pharmacies participate. The savings card cannot be stacked with Washington Medicaid or any government coverage program.

The recommended starting dose for intracavernosal alprostadil in a supervised clinical setting is 2.5 mcg, titrated upward in 2.5 mcg increments until an erection adequate for intercourse is achieved without exceeding 60 minutes in duration. The maximum labeled dose is 60 mcg for neurogenic etiology and 40 mcg for vasculogenic etiology [2]. Dose titration should always occur under provider supervision before the patient attempts self-injection at home.