Evidence checked: 19 July 2026
Erection problems are a common sexual health concern, but a persistent change is not simply a reason to buy a “male enhancement” product. Erectile dysfunction (ED) can be an early sign of heart disease, diabetes, hypertension, high cholesterol, a medicine effect, low testosterone, nerve disease, anxiety or relationship stress.[1,2]
The evidence for dietary supplements for erectile dysfunction is limited. A 2024 network meta-analysis found general ineffectiveness across most nutraceutical interventions; L-arginine showed some usefulness, particularly in selected men with organic ED, while prescription medicines had stronger evidence.[3] Ginseng produced only a trivial effect on validated erectile scores in a Cochrane review.[4]
Clinical bottom line: The best first step for repeated erection difficulty is a health and medicine review. Never combine a male-enhancement product with nitrate medicine, and do not trust “natural Viagra” sold online. On 29 June 2026, the TGA reported sexual-enhancement supplements containing undeclared prescription medicines.[5]
Erectile dysfunction causes and cardiovascular health checks
An erection depends on blood flow, nerves, hormones, sexual stimulation and psychological context. Occasional difficulty after alcohol, poor sleep or stress is different from a persistent pattern. A GP may ask about morning erections, libido, ejaculation, medicines, smoking, alcohol, relationship context and whether the problem is situational or consistent.
Assessment can include blood pressure, cardiovascular risk, genital examination and tests for glucose, lipids or morning testosterone where indicated. ED and low libido are not the same. Testosterone should not be assumed to be low from erection symptoms alone, and one unconfirmed blood result is not a diagnosis.
Healthdirect notes that ED is often the first sign of cardiovascular disease, diabetes, hypertension or high cholesterol.[1] New erectile problems with chest pain, breathlessness or reduced exercise capacity need prompt assessment. Chest pain during sexual activity is an emergency; stop and call triple zero (000). An erection lasting four hours, especially if painful, also needs urgent emergency care.
Best supplements for erections and ED: what research found
There is no universal best supplement, vitamin or herbal remedy for ED. The cause, severity, product identity and outcome measured all matter.
Scroll sideways to read the full table →
| Option | Evidence signal | Main safety boundary |
|---|---|---|
| L-arginine | Selected ED trials report improvements in erectile function | Can lower blood pressure; interaction risk with nitrates, antihypertensives and prescription ED medicines |
| Korean or Panax ginseng | Low-certainty evidence suggests a trivial average change on a validated score | Can affect sleep, blood glucose, bleeding risk and medicine metabolism |
| Vitamin D, zinc or folate | Low status is associated with poorer health in some studies | Correcting deficiency is not proof of an erection effect; excess intake can cause harm |
| Maca, tribulus or horny goat weed | Evidence is insufficient or not dependable for erectile performance | Variable active ingredient, adulteration and interaction risks |
| Testosterone or DHEA | These are hormones, not ordinary vitamins and supplements | Prescription, fertility and monitoring boundaries; not appropriate without confirmed indication |
Supplements may help an individual deficiency or another health goal without improving erections. A change in a laboratory marker is not automatically a meaningful improvement in sexual function or sex life.
L-arginine supplements for ED, nitric oxide and blood flow
L-arginine is an amino acid used in the production of nitric oxide. This signalling molecule relaxes smooth muscle and helps blood vessels regulate blood flow to the penis. That mechanism makes the ingredient plausible, but it does not establish that every dose or combination improves erectile response.
A 2019 systematic review and meta-analysis included 10 randomised trials and 540 men with mild to moderate ED. It reported better erectile-function outcomes than placebo or no intervention, but formulations, amounts and durations varied.[6] The 2024 network analysis found L-arginine among the few nutraceutical approaches with a positive signal, while also emphasising the general ineffectiveness of most products.[3]
Do not add this supplement to a prescribed ED medicine, nitrates or blood-pressure medicines without a prescriber or pharmacist checking the combination. Dizziness, fainting or an excessive fall in pressure is possible. Previous heart attack, significant heart disease, kidney disease, herpes outbreaks or planned surgery also warrant individual advice.
Ginseng, horny goat weed and herbal ED remedies
Ginseng is marketed as a natural remedy for erectile dysfunction. The 2021 Cochrane systematic review included nine studies and 587 men, with follow-up no longer than 12 weeks. Compared with placebo, the average effect on the IIEF erectile-function scale did not reach the review’s threshold for a clinically important change, and certainty was low.[4]
This result does not validate every ginseng species, extract or combination. A ginseng supplement can vary in identity and strength, and may interact with anticoagulants, diabetes medicines, stimulants and other drugs.
Horny goat weed contains icariin-related compounds studied mainly in laboratory or animal settings. Reliable clinical evidence, product standardisation and safety data are inadequate. Yohimbe or yohimbine can cause anxiety, high blood pressure, fast heart rate and serious adverse effects; it should not be treated as a casual ED remedy.
Vitamins and supplements for erectile dysfunction
Vitamin D deficiency, low folate and zinc status can coexist with diabetes, obesity, poor diet or other causes of sexual dysfunction. Association does not prove that supplementation will improve erectile function in a person whose level is adequate.
Correct a documented deficiency for the established health reason and use an appropriate amount. High-dose vitamin D can cause hypercalcaemia and kidney injury. Excess zinc can cause copper deficiency, while folic acid can mask vitamin B12 deficiency. A multivitamin is not a substitute for cardiovascular or urology assessment.
Testosterone is relevant only when symptoms and repeat morning blood tests support androgen deficiency. External testosterone can suppress sperm production. Men trying to conceive need a fertility-aware plan before any hormone treatment.
Viagra, Cialis and prescription treatment for ED
Phosphodiesterase type 5 (PDE5) inhibitors improve the nitric-oxide response during sexual stimulation. They do not automatically create desire, permanently cure the cause or work without arousal. In Australia they require a prescription.[1]
Nitrate medicines for angina must not be combined with these inhibitors because blood pressure can fall dangerously. Other medicines and health conditions also change suitability. Do not stop a prescribed medicine that may contribute to erectile dysfunction; ask the prescriber whether an alternative or adjustment is appropriate.
Psychological therapy, a vacuum device, injections or specialist options can be useful when tablets are unsuitable or ineffective. This is why a discreet medical review offers more choices than repeatedly switching ED supplements.
Online ED supplements and undeclared medicines
The TGA’s 29 June 2026 safety advisory followed laboratory testing of products sold as dietary supplements or natural formulas. Undeclared prescription-only sildenafil, tadalafil and dapoxetine were detected, and the products were not included in the Australian Register of Therapeutic Goods.[5]
Hidden ingredients can create an unknown dose and serious interactions, particularly with nitrates. An AUST L or AUST R number helps identify an Australian therapeutic good, but it does not prove that it improves erections. Avoid overseas “instant”, “herbal Cialis” or “natural Viagra” products, and report a suspected counterfeit or adverse event to the TGA.
Lifestyle changes that help erectile dysfunction and sexual performance
Lifestyle changes such as stopping smoking, increasing physical activity, managing diabetes and blood pressure, moderating alcohol and improving sleep can support overall health and erectile function. They are not instant sexual performance enhancers.
Performance anxiety, depression, relationship conflict and past sexual experiences can contribute even when physical risk factors are present. A GP, psychologist or qualified sex therapist can help. Persistent problems are not a personal failure, and involving a partner is optional.
Erection supplement questions
What is the best supplement to get hard?
No product is best for everyone. L-arginine has a modest evidence signal in selected men, but prescription options have stronger evidence and a health review can identify a cardiovascular, hormonal, medicine or psychological cause.
How can I increase my erectile hardness?
Address the cause. This may include cardiovascular risk care, smoking cessation, exercise, diabetes management, medicine review, psychological support or a prescribed ED therapy. Supplements for erections should not delay that assessment.
What is 10 times better than Viagra?
No supplement has evidence showing it is “10 times better” than an approved prescription option. Such a claim is a warning sign for misleading marketing or an undeclared medicine. A prescriber can compare approved options and check nitrate and cardiovascular risks.
How do I get rock hard right now?
There is no safe instant supplement trick. Do not take extra tablets, combine products or use an unknown online enhancer. Seek urgent care for chest pain or an erection lasting four hours; otherwise arrange a confidential medical review for persistent difficulty.
References
- Healthdirect Australia. Erectile dysfunction: symptoms and treatment. Last reviewed February 2025.
- Healthy Male. Erectile dysfunction and cardiovascular disease. Accessed 19 July 2026.
- Barbonetti A, et al. Nutraceutical interventions for erectile dysfunction: a systematic review and network meta-analysis. Journal of Sexual Medicine. 2024;21(11):1054-1063. doi:10.1093/jsxmed/qdae123. PubMed
- Lee HW, et al. Ginseng for erectile dysfunction. Cochrane Database of Systematic Reviews. 2021;4:CD012654. doi:10.1002/14651858.CD012654.pub2. PubMed
- Therapeutic Goods Administration. Sexual enhancement supplements found to contain undeclared prescription medicines. 29 June 2026.
- Rhim HC, et al. The potential role of arginine supplements on erectile dysfunction: a systematic review and meta-analysis. Journal of Sexual Medicine. 2019;16(2):223-234. doi:10.1016/j.jsxm.2018.12.002. PubMed
Author bio
Prepared for Nutrition Market under Charles Gumbley’s practitioner-led editorial system. Nutrition Market sells supplements; this article contains no product, category, price, stock or purchase links.
Evidence checked: 19 July 2026. General information only; it does not replace medical, cardiovascular, urology, sexual-health or pharmacy care.
