Best Erectile Health & Blood-Flow Support for Men in 2025

Erectile difficulties are common and usually treatable, but the right approach depends on the cause. For many men the most effective route is prescription ED medication — sildenafil or tadalafil — which telehealth services like Hims, BlueChew and Ro can prescribe only after an online consultation with a licensed provider who decides whether it's appropriate. Others prefer to start with over-the-counter blood-flow support such as L-citrulline or L-arginine, which the body converts to nitric oxide to help blood vessels relax. We compared the most trusted prescription telehealth platforms alongside two well-dosed OTC supplements so you can see how they differ on evidence, cost, discretion and safety. This is not medical advice, and erectile problems can be an early sign of underlying heart, hormonal or metabolic issues worth discussing with a doctor.

Quick Pick

Hims ED Treatment

Hims connects you with a licensed provider through a straightforward online visit, and if appropriate you can be prescribed generic sildenafil or tadalafil at a competitive price, shipped discreetly. It combines real prescription medication, transparent pricing and an easy-to-use platform, which makes it the most complete option for most men — provided a clinician agrees it's right for you.

At a Glance: Top 5 Compared

#ProductPrice*RatingBest For
1 Hims ED Treatment ~$20–90/mo 4.7 / 5 Men who want licensed prescription ED care online
2 BlueChew ~$20–90/mo 4.5 / 5 Men who dislike swallowing pills
3 Ro (Roman) ~$17–90/mo 4.5 / 5 Men who prioritize privacy and clinical thoroughness
4 Nutricost L-Citrulline ~$20 (90 servings) 4.4 / 5 Men wanting an evidence-leaning OTC blood-flow aid
5 NOW Foods L-Arginine ~$15 (120 servings) 4.3 / 5 Budget-focused buyers new to nitric-oxide support

*Approximate prices for reference only. Confirm the current price on the retailer's page before buying.

1Best Overall Telehealth

Hims ED Treatment

Hims ED Treatment

Hims is a men's telehealth platform that offers ED treatment only after an online consultation with a licensed provider who reviews your health information and decides whether medication is appropriate. If prescribed, options include generic sildenafil (the active ingredient in Viagra) and tadalafil (the active ingredient in Cialis), plus branded versions and chewable 'hard mints.' Pricing is subscription-based and scales with the medication and dose, and orders ship in discreet packaging. It is not guaranteed that everyone qualifies — that's a clinical decision, not an automatic one.

Pros

  • Prescriptions issued by U.S.-licensed providers after a real consult
  • Generic sildenafil and tadalafil at competitive prices
  • Discreet packaging and simple subscription management
  • Offers chewable options and dose flexibility

Cons

  • Requires an online medical consultation — not guaranteed approval
  • Ongoing subscription rather than one-off purchase
  • Not appropriate for men taking nitrates or certain heart medications
2Best Chewable Option

BlueChew

BlueChew

BlueChew specializes in chewable ED tablets and, like other telehealth services, prescribes only after an online consultation with a licensed provider. Its differentiator is the format: chewable sildenafil and tadalafil in a range of doses, delivered on a monthly subscription. The chewables are the same active ingredients as standard ED pills, just in a form some men find more convenient. Approval and dosing are determined by the prescribing clinician, not chosen freely at checkout.

Pros

  • Chewable format is convenient and discreet
  • Sildenafil and tadalafil options with flexible plans
  • Consultation handled online with a licensed provider
  • Easy-to-pause monthly subscription

Cons

  • Chewables only — no standard tablets
  • Requires medical consultation and approval
  • Unsafe to combine with nitrates or nitric-oxide boosters without a doctor
3Best for Discreet Care

Ro (Roman)

Ro (Roman)

Ro (formerly Roman) is a well-established men's telehealth brand that treats ED only after an online visit with a licensed provider who assesses whether medication is suitable. If prescribed, it offers generic sildenafil and tadalafil along with branded options, all shipped in plain, discreet packaging. Ro is known for a polished, privacy-focused experience and free ongoing access to its pharmacy team. As with any legitimate service, medication is not dispensed without a clinician's approval.

Pros

  • Trusted, established telehealth brand
  • Discreet packaging and strong privacy focus
  • Generic and branded sildenafil/tadalafil if prescribed
  • Access to pharmacists and ongoing support

Cons

  • Pricing varies by medication and can add up
  • Consultation required — approval is not automatic
  • Not suitable alongside nitrate heart medications
4Best OTC Supplement

Nutricost L-Citrulline

Nutricost L-Citrulline

Nutricost L-Citrulline is a straightforward, high-value amino acid supplement that the body converts to L-arginine and then nitric oxide, which helps blood vessels relax and may support circulation. L-citrulline has more favorable absorption data than L-arginine taken directly, and small studies suggest it may modestly help mild erectile difficulties, though it is far less potent than prescription medication. Nutricost offers it in bulk powder and capsules with third-party testing. It is a supplement, not a treatment, and won't work like an ED drug.

Pros

  • L-citrulline absorbs better than direct L-arginine
  • Excellent value per serving
  • Third-party tested for quality
  • No prescription or consultation needed

Cons

  • Effects are modest compared with prescription ED drugs
  • Evidence for ED is limited and mixed
  • Should not be combined with nitrates or ED meds without a doctor
5Best Budget OTC

NOW Foods L-Arginine

NOW Foods L-Arginine

NOW Foods L-Arginine is an inexpensive, widely available amino acid supplement from a long-established, GMP-certified brand. L-arginine is a direct nitric-oxide precursor that has been studied for circulation and mild erectile support, though its oral bioavailability is lower than L-citrulline because much is broken down before it reaches the bloodstream. It's a reasonable entry point for men who want to try nitric-oxide support cheaply. Like any supplement here, it is not a substitute for medical evaluation or prescription treatment.

Pros

  • Very affordable and easy to find
  • Trusted, GMP-certified manufacturer
  • Direct nitric-oxide precursor
  • No prescription required

Cons

  • Lower absorption than L-citrulline
  • Evidence for ED is weak and inconsistent
  • Dangerous with nitrates or ED medication unless cleared by a doctor

Frequently Asked Questions

Do I need a prescription for ED medication from Hims, BlueChew or Ro?

Yes. These are telehealth services, not pharmacies you can buy from freely. Each requires an online consultation with a licensed provider who reviews your health information and decides whether prescription medication like sildenafil or tadalafil is appropriate for you. Approval is a clinical decision and is not guaranteed.

Can OTC supplements like L-citrulline replace ED drugs?

No. L-citrulline and L-arginine are nitric-oxide precursors that may offer modest circulation support, but they are far weaker than prescription ED medication and the evidence for treating erectile dysfunction is limited. They may suit men with very mild issues or those who prefer to start conservatively, but they are supplements, not treatments.

Is it safe to combine these with heart medication?

This is critical: never combine ED medication or nitric-oxide boosters with nitrates (such as nitroglycerin) or certain blood-pressure and heart drugs without a doctor's explicit approval. The combination can cause a dangerous drop in blood pressure. Always disclose every medication you take during any consultation.

Could erectile problems signal a bigger health issue?

Yes. Erectile dysfunction can be an early warning sign of underlying cardiovascular, hormonal, metabolic or psychological conditions. Rather than only masking the symptom, it's worth talking to a doctor who can look for and address any root cause. This article is informational and not medical advice.

Conclusion

For most men who want effective, legitimate ED treatment, Hims is the best overall telehealth choice — real prescription medication if a licensed provider approves it, transparent pricing and discreet delivery. Choose BlueChew if you prefer chewables, and Ro if privacy and a polished experience matter most. If you'd rather start with an over-the-counter option, Nutricost L-Citrulline is the better-absorbed pick and NOW Foods L-Arginine the budget entry point, though both are modest compared with medication. Whatever you choose, remember this is not medical advice: erectile problems can signal underlying health issues, and you should never combine nitrates or heart medication with ED drugs or nitric-oxide boosters without a doctor's guidance.