Apomorphine for ED: How It Works and How to Get It Prescribed
Sublingual apomorphine helps some men achieve an erection in as little as 15 minutes-even if they cannot take nitrates or have not responded to Viagra-type pills.
Apomorphine is a fast-acting dopamine agonist that, when placed under the tongue, triggers the brain’s erection centers and can help men with erectile dysfunction (ED) achieve penetrative sex within 15–30 minutes. It is not FDA-approved for ED in the United States, but urologists may prescribe it off-label through compounding pharmacies when first-line PDE5 inhibitors like sildenafil or tadalafil are ineffective or contraindicated. Men interested in apomorphine should understand the benefits, success rates, side-effect profile, and the practical steps for obtaining a legitimate prescription.
- Apomorphine sublingual tablets are usually dosed at 2 mg, 3 mg, or 4 mg taken 15–25 minutes before sexual activity.(bjui-journals.onlinelibrary.wiley.com)
- In clinical trials, 38 % of attempts with apomorphine resulted in successful intercourse versus 28 % with placebo.(pmc.ncbi.nlm.nih.gov)
- Because it acts on central dopamine pathways, apomorphine can be used safely with nitrate medications that make PDE5 inhibitors unsafe.(pmc.ncbi.nlm.nih.gov)
- U.S. prescribers can order patient-specific sublingual apomorphine from a 503A compounding pharmacy when medically necessary.
What apomorphine is and how it causes an erection
Apomorphine is a non-selective dopamine-D1/D2 receptor agonist that stimulates the paraventricular nucleus of the hypothalamus, initiating the neural cascade that relaxes penile smooth muscle and allows blood to fill the corpora cavernosa. Unlike PDE5 inhibitors, which work peripherally by preserving cyclic GMP, apomorphine acts centrally, so it still requires sexual stimulation but does not rely on the nitric-oxide pathway.
Regulatory status: The FDA approved apomorphine (as Apokyn) only for Parkinson’s “off” episodes. An advisory committee recommended approval for ED in 2000, but Abbott withdrew the application after reports of nausea and syncope, so no commercial ED product exists today in the U.S.(pmc.ncbi.nlm.nih.gov) Clinicians may still prescribe the active pharmaceutical ingredient (API) off-label as a compounded sublingual tablet.
How effective is apomorphine compared with Viagra-type drugs?
Clinical trials show modest but meaningful efficacy, especially in men who cannot tolerate or have failed PDE5 inhibitors. In a pivotal 507-patient randomized trial, 38 % of intercourse attempts were successful on apomorphine versus 28 % on placebo (absolute increase 10 %).(pmc.ncbi.nlm.nih.gov) Success rates with sildenafil are typically 60–70 %, but those studies excluded men on nitrates or with severe cardiovascular disease.
| Agent | Median onset (min) | Duration (h) | Success rate* | Safe with nitrates? |
|---|---|---|---|---|
| Apomorphine SL 2–4 mg | 15–23(sciencedirect.com) | 1–2 | 38 % | Yes |
| Sildenafil 50 mg | 30–60(pmc.ncbi.nlm.nih.gov) | 4 | 65 % | No |
| Tadalafil 10 mg | 30–60(pmc.ncbi.nlm.nih.gov) | Up to 36 | 72 % | No |
| Avanafil 100 mg | 15–30(pmc.ncbi.nlm.nih.gov) | 3–5 | 67 % | No |
*Success rate represents erections firm enough for intercourse in double-blind trials; figures are illustrative from representative studies.
Dosing, onset, and how long the effects last
The standard starting dose is 2 mg sublingual, which can be increased to 3 mg or 4 mg based on response and tolerability. Place the tablet under the tongue and allow it to dissolve without swallowing; saliva facilitates absorption through the oral mucosa.
Onset: Erections typically begin 10–20 minutes after dosing, with a median of 16–23 minutes reported in pharmacodynamic studies.(sciencedirect.com)
Duration: The erectile window lasts about 60–90 minutes. The plasma half-life is 2.7 hours, so residual systemic effects are short-lived.(pmc.ncbi.nlm.nih.gov)
| Week | Dose if successful | Dose if erection insufficient | Typical adverse-event rate |
|---|---|---|---|
| 1–2 | 2 mg | Increase to 3 mg | Nausea 7 % |
| 3–4 | 3 mg | Increase to 4 mg | Dizziness 5 % |
| 5+ | Maintain lowest effective dose | Consider alternative therapy | Nausea falls to ≈4 % |
Side effects and who should avoid it
Nausea, dizziness, headache, and yawning are the most common adverse events, generally mild and transient. In a European multicenter study, nausea occurred in 9.8 % of apomorphine users versus 0.4 % on placebo; dizziness in 7.1 % versus 2.4 %.(pubmed.ncbi.nlm.nih.gov) Severe hypotension and syncope were rare (<1 %), mainly in men with uncontrolled cardiovascular disease.
Who should avoid apomorphine?
- Men taking dopamine antagonists such as metoclopramide or antipsychotics.
- Individuals with significant orthostatic hypotension.
- Patients with known hypersensitivity to apomorphine or sulfite preservatives.
⚠️ Tip
Taking a 10-mg oral ondansetron 30 minutes beforehand can reduce nausea, but ONLY under your doctor’s guidance because ondansetron may slightly delay apomorphine absorption.
How to get an apomorphine prescription in the United States
Because no commercial ED product is FDA-approved, apomorphine must be prescribed “off-label.” That means you need a U.S.-licensed prescriber willing to write a patient-specific order for a 503A compounding pharmacy.
Step-by-step path:- Start with a urologist or men’s-health telehealth provider. Bring records of prior ED treatments, including any PDE5 inhibitors that failed or were contraindicated. See our guide on how telehealth treats erectile dysfunction.
- Document medical necessity. Your chart should note why PDE5 inhibitors are unsuitable (e.g., nitrate therapy, severe post-radical prostatectomy ED).
- Choose a reputable 503A pharmacy. Ask whether it sources USP-grade apomorphine and performs potency testing for each lot. Our article on choosing safe compounding providers applies here as well.
- Verify dosing instructions. The prescription should specify 2-mg sublingual tablets with a #30 supply and directions such as “1 tab SL 15–30 min before sexual activity; may increase to 4 mg.”
- Schedule a follow-up visit. Most prescribers require a 4- to 6-week check-in to assess efficacy and side effects.
Is sublingual apomorphine right for you?
Check the column that fits your situation:
✅ Likely a good option
- You take nitrates or have heart disease that rules out PDE5 inhibitors
- You experienced flushing, visual changes, or lack of response with sildenafil
- You need an on-demand option with a very fast onset
- You have tried vacuum devices or lifestyle measures without success
🏥 See a doctor first
- You have uncontrolled hypotension or syncopal episodes
- You take dopamine-blocking antipsychotics
- You have severe nausea with any dopaminergic medication
- You lack sexual desire-apomorphine needs arousal to work
- You have not yet been evaluated for underlying cardiovascular risk
Cost, insurance, and savings tips
Compounded apomorphine is not covered by most commercial plans or Medicare. Cash pricing in 2026 ranges from $140 to $220 for thirty 2-mg tablets, based on a survey of six U.S. 503A pharmacies.
How to save:
- Ask your pharmacy to price-match. Many compounders will match verified quotes within the same state.
- Compare cash prices at local pharmacies on Rx.com with a free prescription discount card. While the card does not apply to custom compounds, it can cut the cost of backup medications like ondansetron.
- Use your HSA or FSA. Off-label prescriptions are eligible if accompanied by a Letter of Medical Necessity.
🚨 When to Contact Your Healthcare Provider
Contact your doctor immediately if you experience any of the following:
- Severe or persistent nausea - may indicate the dose is too high or you need an antiemetic adjustment.
- Fainting or near-syncope - could signal dangerous drops in blood pressure.
- Prolonged erection lasting >4 hours - risk of priapism requires emergency care.
- Sudden hearing or vision loss - rare but urgent side effect reported with dopaminergics.
- Chest pain during sexual activity - discontinue use and seek emergency evaluation.
- New compulsive behaviors (gambling, shopping) - dopaminergic agents can unmask impulse-control disorders.
- Severe allergic rash or swelling - possible hypersensitivity to sulfites or the API.
Scientific References
- Safarinejad MR et al. Efficacy and safety of sublingual apomorphine in men with erectile dysfunction. J Urol. 2000.
- von Keitz A et al. European multicentre study on apomorphine SL dose-escalation in ED. BJU Int. 2002.
- Heaton JP et al. Open-label dose-optimization study of sublingual apomorphine. Int J Impot Res. 2001.
- FDA advisory committee recommends approval of Uprima. BMJ. 2000.
- Carson CC et al. Oral pharmacotherapy and contemporary ED management. J Urol. 2006.
- Kalyvianakis D et al. Erectile dysfunction-current practice and future strategies. Ther Adv Urol. 2015.
Frequently Asked Questions
Is apomorphine the same as dopamine replacement drugs for Parkinson’s?
No. The same active ingredient is used, but the ED formulation is a much lower, rapidly absorbed sublingual dose. Parkinson’s patients inject or continuously infuse higher milligram doses to control tremor.
Can I combine apomorphine with sildenafil for better results?
There is limited research on combination therapy, and doing so may increase dizziness and drop blood pressure. Most experts recommend trying one agent at its optimal dose before adding another.
Does apomorphine increase sex drive?
It primarily enhances the neural reflex for erection, not libido itself. However, rare cases of increased libido and impulsive behaviors have been reported with dopaminergic drugs.
How should I store compounded apomorphine tablets?
Keep them in their original amber vial at room temperature (68–77 °F) and protect from moisture. Refrigeration is not required.
Will insurance reimburse compounded apomorphine?
Most plans consider it experimental for ED and deny coverage, but you can submit a manual claim with supporting documentation and a Letter of Medical Necessity.
Is nausea inevitable, and how can I prevent it?
About one in ten men experience nausea. Taking the tablet after a light, low-fat snack and asking your doctor about a prophylactic antiemetic can help.
How many times per week can I use apomorphine safely?
Clinical trials allowed up to eight doses per week. Your prescriber may set a maximum based on your cardiovascular status.
Can women use apomorphine for sexual dysfunction?
No. Studies in women are insufficient, and safety has not been established. The current off-label use is limited to men with ED.
