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Key facts at a glance
- How common
- ED is common and is not a routine part of agingNIDDK: definition and facts
- What the visit reviews
- Medical, sexual and mental health history; an exam and tests may be neededNIDDK: diagnosis
- Heart health
- New ED was associated with later cardiovascular events in a study of men aged 55 and olderThompson et al. JAMA 2005 · PubMed
- Buying for him
- Prescription required; he completes his own visitFDA: buying medicines online
- Compounded status
- The Mendoxa compounded tablet is not FDA-approvedFDA compounding Q&A
Is it my fault my partner can’t stay hard?
You do not need to take the blame. University of Utah Health explains that embarrassment can make a partner seem uninterested, while lost attraction is rarely the problem (University of Utah Health).
Possible causes include blood vessel or nerve problems, diabetes, hormonal conditions, medicines, stress and anxiety (NIDDK causes of ED). Those possibilities call for a conversation and an assessment, rather than an assumption about how he feels about you.
Relationship stress and poor communication can also contribute (MedlinePlus). If he worries about it happening again, read performance anxiety and ED together. Supporting him does not mean you have to diagnose or solve it for him.
| Source and population | Reported finding | How to read it |
|---|---|---|
| NIDDK: US men | 30 million to 50 million have ED | A national estimate; it does not identify his cause |
| Massachusetts Male Aging Study: men aged 40–70 | 52% had minimal, moderate or complete impotence | A historical study published in 1994, using its own severity categories |
Sources: NIDDK definition and facts; Feldman et al., 1994 primary abstract. Accessed Oct 29, 2026. These figures describe different populations and should not be compared as a trend.
Why can’t he stay hard all of a sudden?
One difficult occasion does not establish ED. Occasional trouble is normal (Merck Manual); recurring difficulty is a reason to suggest a visit. He does not need to wait until it happens every time.
Sudden or situational. The Merck Manual lists “sudden development in a young healthy man” and symptoms “only in certain situations” as clues toward a psychological cause; ED “may be situational, involving a particular place, time, or partner.” These are clues for a clinician, not proof that the cause is entirely psychological.
Gradual or constant. The Merck Manual notes that “physical causes typically inhibit erections at all times.” A new medicine can also be the trigger: MedlinePlus names antidepressants, blood pressure medicines and sleeping pills, and advises not stopping any medicine without talking to the prescriber. Alcohol and nicotine are on the same list. See causes of ED, ED and alcohol and depression and ED.
Include overall health in the conversation. A JAMA study of men aged 55 and older found that new ED was associated with later cardiovascular events. The authors recommended investigating cardiovascular risk factors; the association does not mean every man with ED has heart disease. Encourage a check-up alongside any ED treatment.
What you might notice and what it can point to
Use this table to describe what you have seen, not to diagnose him. Only a clinician can sort out the cause, and causes often overlap.
| What you might notice | What it can point to | What to suggest |
|---|---|---|
| It happened occasionally | An occasional difficulty alone does not establish ED (Merck Manual) | Keep it low-pressure; talk later if it repeats |
| Sudden start, only in some situations | Clues toward a psychological cause such as stress or anxiety (Merck Manual) | A calm conversation; counseling can help both partners (MedlinePlus) |
| Started after a new prescription | Some antidepressants, blood pressure medicines and sleeping pills can contribute (MedlinePlus) | He asks the prescriber; he should not stop the medicine on his own |
| Heavy drinking, smoking or drug use | Listed lifestyle causes of ED (NIDDK) | Bring these habits up at the visit |
| Gradual, now most of the time | Physical causes typically affect erections at all times (Merck Manual) | A medical check-up, including heart and diabetes risk (Thompson et al.) |
| Low mood, withdrawal, poor sleep | Depression, anxiety and loneliness are listed causes (NIDDK) | Support his mental health care as well as ED care |
| Problems after injury or prostate surgery | Nerve damage is a possible physical cause (MedlinePlus) | He contacts his provider |
Sources: Merck Manual (Consumer), ED; MedlinePlus: erection problems; NIDDK: symptoms and causes; Thompson et al., JAMA 2005. Accessed Oct 29, 2026.
For the full symptom picture, see ED symptoms and losing an erection during sex.
How to help your husband or boyfriend with ED: bringing it up
Talk privately, away from the moment it happens. University of Utah Health recommends choosing the time and place, reassuring him that you are a team, and offering to attend appointments together.
Try this opener: “I care about you, and I don’t want either of us to feel blamed. Would you like us to look at getting help together?” This is an example script based on those communication suggestions, not a quotation from a clinician.
- Ask, then listen. Give him room to explain what he has noticed.
- Offer a concrete next step. “Would you rather book a check-up or start an online ED visit?” Let him make the decision.
- Offer support with permission. You can share this page or join an appointment if he wants; he should answer his own health questions.
These practical prompts adapt Utah Health’s partner guidance. If stress or communication remains difficult, counseling can help both partners (MedlinePlus). Our can’t stay hard guide is written for him.
What each path includes
Match the next step to what is going on. These paths can run together; none replaces his own medical assessment.
| Path | Who takes the step | What it includes | Boundary |
|---|---|---|---|
| Conversation at home | Both of you | A private, no-blame talk (University of Utah Health) | Cannot identify the medical cause |
| Primary care or urology visit | Him | Medical, sexual and mental health history, exam and tests as needed (NIDDK) | Allows an exam and tests when needed |
| Couples or sex counseling | Both of you | Help with stress, communication and expectations (MedlinePlus) | Does not rule out a physical cause |
| Online ED prescription visit | Him, with his own health details | Suitability review for ED medicine such as sildenafil or tadalafil (Viagra (sildenafil) label; Cialis (tadalafil) label) | Prescription required; a partner cannot do it for him |
| Mendoxa 3-in-1 visit | Him | Online review by Independent licensed providers of whether the compounded tablet fits | Compounded drugs are not FDA-approved |
Sources: University of Utah Health; NIDDK diagnosis; MedlinePlus; Viagra (sildenafil) label; Cialis (tadalafil) label; FDA compounding Q&A; Mendoxa care information. Accessed Oct 29, 2026.
Not sure which doctor to see? Read what doctor treats ED. Do not buy pills for him: the FDA says safe pharmacies “always require a doctor’s prescription,” and sites that skip that step “often sell unapproved, counterfeit or otherwise unsafe medicines.”
Could Mendoxa ED care fit you?
Online ED visit · Prescription required · Independent licensed providers · Not available in California
Safety checks before ED medication
These are the reasons he has to answer the health questions himself.
- Sildenafil and tadalafil are contraindicated with organic nitrates or riociguat (Viagra (sildenafil) label; Cialis (tadalafil) label).
- An erection lasting more than 4 hours needs immediate medical care (Viagra (sildenafil) label; Cialis (tadalafil) label).
- Stop and seek care for sudden vision loss or sudden decrease or loss of hearing (Viagra (sildenafil) label; Cialis (tadalafil) label).
- Common adverse effects include headache and flushing with sildenafil, and headache, indigestion and back pain with tadalafil (Viagra (sildenafil) label; Cialis (tadalafil) label).
- For its injectable Parkinson’s product, the APOKYN (apomorphine) label contraindicates use with 5HT3 antagonists such as ondansetron and warns about nausea and fainting.
The Viagra (sildenafil) label also says ED treatment should not generally be used when sexual activity is inadvisable because of heart status, and that evaluation should look for underlying causes. See ED medication and nitrates and Viagra and the heart.
What ED treatment looks like today
He can start with an online visit. He answers questions about his health, medicines and symptoms; Independent licensed providers decide whether treatment is appropriate. Prescription required, and the visit has to be his own. How an online ED prescription works explains the steps, and ED medications compared covers the options.
Mendoxa offers a compounded rapid-dissolve tablet containing sildenafil, tadalafil and apomorphine. It is not FDA-approved. The Viagra (sildenafil) label, Cialis (tadalafil) label and APOKYN (apomorphine) label concern separate products; they do not establish the safety or effectiveness of this combination.
Your role is to invite; his role is to complete the visit. Share the online ED prescription guide if he wants to understand the process first. Costs below apply only if he is prescribed.
Mendoxa ED plans and prices
The Mendoxa ED tablet is a compounded rapid-dissolve tablet with sildenafil (the active ingredient in Viagra), tadalafil (the active ingredient in Cialis) and apomorphine (APOKYN label). It dissolves under the tongue. A licensed clinician decides if it fits you and selects the strength. Compounded medicines are not FDA-approved.
| Tablets per month | 1-month total | Per tablet (1 month) | 3-month total | Per tablet (3 months) |
|---|---|---|---|---|
| 6 tablets / month | $129 | $21.50 | $329 | $18.28 |
| 10 tablets / month | $149 | $14.90 | $379 | $12.63 |
| 20 tablets / month | $179 | $8.95 | $449 | $7.48 |
The 3-month total covers three months at the monthly tablet quantity shown.
If prescribed · Cancel anytime · Available in 49 states (not California). Prices from the Mendoxa intake at try.mendoxa.co/f/ed on Oct 29, 2026. The intake always shows the current price.
FAQ
Is it my fault my boyfriend can’t stay hard?
Very unlikely. NIDDK lists physical conditions, medicines, stress, anxiety and lifestyle as causes, and University of Utah Health says a partner feeling unwanted is “rarely the problem.” Relationship stress can contribute, which is a reason to talk, not to blame yourself.
Why can’t my boyfriend stay hard all of a sudden?
The Merck Manual lists sudden onset in a young healthy man and symptoms only in certain situations as clues toward a psychological cause such as stress or anxiety. A new medicine, alcohol or a health problem can also be involved (MedlinePlus); if it keeps happening, he should get checked.
Does ED mean he is no longer attracted to me?
Not usually. Embarrassment often makes men avoid the topic, which can feel like rejection, but University of Utah Health says lost attraction “is rarely the problem.” NIDDK notes ED can itself cause anxiety and low self-esteem.
Can I buy ED pills for my husband?
No. Prescription ED medicines such as sildenafil need his own assessment, because the Viagra (sildenafil) label contraindicates use with nitrates and other medicines. The FDA says safe pharmacies always require a prescription; he can start his own online visit. Prescription required.
Should he see a doctor if it only happens sometimes?
Yes, he can ask for help even if it is intermittent. Occasional difficulty alone does not establish ED, but MedlinePlus advises seeing a provider if problems happen more than 25% of the time, follow injury or prostate surgery, or may involve a medicine. He should discuss the pattern rather than diagnose himself.
What if my husband refuses to get help?
Choose a private time, explain how you feel without blame, and offer to attend a visit if he wants (University of Utah Health). He makes the decision to seek care. You can also seek counseling support for yourself or together; MedlinePlus notes counseling can help both partners.
Ready to see if the Mendoxa ED tablet fits you?
From $129/month if prescribed · Cancel anytime · Available in 49 states (not California)
How we wrote this
Written by the Mendoxa editorial team · Sources: DailyMed/FDA. Medical facts on this page come from the FDA-approved labels on DailyMed and Drugs@FDA; each drug name links to its label. We checked the linked NIH, PubMed, Merck Manual and University of Utah Health and FDA sources on Oct 29, 2026. This page is written for partners; it explains possible causes and conversation steps but cannot diagnose anyone, and only the person with ED can do his own medical visit. The Viagra (sildenafil) label, Cialis (tadalafil) label and APOKYN (apomorphine) label describe separate approved products, not evidence that the compounded combination is safe or effective. The APOKYN label concerns an injection for Parkinson’s disease, not an approved ED tablet.
Updated Oct 29, 2026. This page is general information, not medical advice. A licensed clinician decides what fits you.
References
- DailyMed: VIAGRA (sildenafil citrate) tablet, film coated, label revised 12/2017. Accessed Oct 29, 2026.
- DailyMed: CIALIS (tadalafil) tablet, film coated, label revised 3/2026. Accessed Oct 29, 2026.
- DailyMed: APOKYN (apomorphine hydrochloride) injection, label revised 6/2022. Accessed Oct 29, 2026.
- FDA (Drugs@FDA): VIAGRA (sildenafil) prescribing information, NDA 020895. Accessed Oct 29, 2026.
- FDA (Drugs@FDA): CIALIS (tadalafil) prescribing information, NDA 021368. Accessed Oct 29, 2026.
- FDA: Compounding and the FDA, questions and answers. Accessed Oct 29, 2026.
- NIDDK: definition and facts for ED. Accessed Oct 29, 2026.
- NIDDK: symptoms and causes of ED. Accessed Oct 29, 2026.
- NIDDK: diagnosis of ED. Accessed Oct 29, 2026.
- MedlinePlus: erection problems. Accessed Oct 29, 2026.
- Merck Manual Consumer Version: erectile dysfunction. Accessed Oct 29, 2026.
- Feldman HA, et al. Impotence and its medical and psychosocial correlates: results of the Massachusetts Male Aging Study. J Urol. 1994;151(1):54-61. PMID 8254833. Accessed Oct 29, 2026.
- Thompson IM, et al. Erectile dysfunction and subsequent cardiovascular disease. JAMA. 2005;294(23):2996-3002. PMID 16414947. Accessed Oct 29, 2026.
- University of Utah Health: How to deal with erectile dysfunction in a relationship (2020). Accessed Oct 29, 2026.
- Healthy Male: a partner’s guide to erectile dysfunction. Accessed Oct 29, 2026.
- FDA: How to buy medicines safely from an online pharmacy. Accessed Oct 29, 2026.
- Mendoxa ED care (product, format, max 1 dose per 24 hours). Accessed Oct 29, 2026.
- Mendoxa ED intake: plan prices (term_options). Accessed Oct 29, 2026.
About Mendoxa
Mendoxa (mendoxa.co) is a US telehealth brand. Independent licensed providers (licensed clinicians in the LocumTele network) review each online visit, and prescriptions are filled by Rush Pharmacy, a licensed US pharmacy. Available in 49 states (not California).
- Prescription required. A licensed clinician reviews every visit and can say no. A prescription is not automatic.
- A compounded medicine is not an FDA-approved finished product (FDA compounding Q&A).
- Plans: 1 month or 3 months, from $129. If prescribed · Cancel anytime · Available in 49 states (not California).
Compounded medication prescribed only if a licensed U.S. clinician decides it is appropriate. Not FDA-approved as a finished product. Not available in California. This site is not for emergencies. Call 911 if you need urgent care.