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Sildenafil and tadalafil. Don’t let later decide.

  • Two prescription tablets for erectile dysfunction

  • A licensed provider reads your history before anything is prescribed

  • Delivered free, in plain packaging

Koves is a technology platform that facilitates access to independent licensed medical providers and does not practice medicine. Prescription products require an online visit with a licensed provider who decides whether treatment is appropriate. Not available in all states.

  1. Sildenafil tablets — prescribing information. DailyMed.
  2. Tadalafil tablets — prescribing information. DailyMed.

Two tablets. A provider decides which.

Prescription products require an online visit with a licensed provider who decides whether treatment is appropriate. Prescriptions are dispensed by The Pharmacy Hub LLC, a licensed U.S. pharmacy. Prices are not final.

A close crop of a man holding a single tablet between finger and thumb, just short of his lips

What a PDE5 inhibitor actually does

  • Arousal opens the blood vessels

    That part is yours. Neither tablet starts anything on its own.

  • The tablet keeps them open

    A PDE5 inhibitor slows the enzyme that closes them early.

  • A provider decides the rest

    Which medication, what dose, and how often are a clinical decision, not a checkout option.

Sildenafil and tadalafil are prescription medications. Do not take either with nitrates. Seek care immediately for an erection lasting more than four hours.

What to know before you decide

Two molecules, one mechanism

Two plain white bottles, one labelled Sildenafil and one Tadalafil, side by side on oxblood paper

Sildenafil and tadalafil are both PDE5 inhibitors. They differ in how long they stay active, not in how they work.

Taken ahead of time

A single unmarked tablet held upright between finger and thumb

Sildenafil is taken before you expect to need it, on the schedule your provider sets.

Or taken daily

Seven identical unmarked tablets laid in one even row across oxblood paper — a week of them

Tadalafil can also be prescribed as a smaller dose every day, so there is nothing to plan around.

Adjusted by message

A hand lifting one unmarked tablet away from a short row on oxblood paper, another already in its place

Dose, timing and medication change on your say-so, in writing, at no extra cost.

Dispensed by a licensed pharmacy

A stainless counting tray and spatula with unmarked tablets gathered mid-count, beside an open unlabelled bottle on oxblood paper

Prescriptions are filled and shipped by The Pharmacy Hub LLC, a licensed U.S. pharmacy.

Plain packaging, free shipping

An unmarked padded mailer on oxblood paper, nothing printed on it anywhere

Nothing on the outside says what is inside, and delivery is included.

Prescription products require an online visit with a licensed provider who decides whether treatment is appropriate.

What the price includes

The visit

A closed laptop and an open blank notebook on oxblood paper, two hands resting either side

A licensed provider reviews your history and decides whether treatment is appropriate.

The pharmacy

Gloved hands placing a blank label on an unlabelled white bottle, a steel tray behind, on oxblood paper

Filling and shipping by The Pharmacy Hub LLC. No separate dispensing fee.

The follow-up

A phone lying face up on oxblood paper, screen dark, a hand resting beside it

Messaging with the care team for as long as you are on treatment.

The Sildenafil and Tadalafil bottles apart on oxblood paper, their long shadows nearly meeting

How the two differ

Both are PDE5 inhibitors and both are prescription-only. The difference a provider weighs is when you take it, not how it works.

  • Sildenafil

  • Tadalafil

Which medication and what dose are decided by a licensed provider, not chosen at checkout. Koves does not publish timing figures for either one.

Do not take either medication with nitrates. Tell your provider about every medication you take.

A man seated against oxblood paper, leaning forward, caught mid-thought with nothing in his hands

From postponed to decided

  • Tell us your history

    An online intake: your health history, what you have tried, what you are taking.

  • A provider reviews it

    A licensed provider reviews your history and decides whether treatment is appropriate.

  • The pharmacy ships it

    If you are prescribed, The Pharmacy Hub LLC fills it and ships it free in plain packaging.

  • Adjust as you go

    Message the care team to change dose, timing or medication. No extra cost.

Why Koves

Licensed U.S. providers

A clinician in her fifties in a white coat against oxblood paper, turned back to the lens

Every prescription is written by a provider licensed in your state.

One licensed pharmacy

Six identical unlabelled white bottles in one even row on oxblood paper, six identical shadows

The Pharmacy Hub LLC fills every order. You always know who dispensed it.

Plain packaging

An unmarked padded mailer running across oxblood paper, seen low and close

Nothing on the outside says what is inside.

Nothing you cannot cancel

A hand turning the cap back onto an unlabelled white bottle on oxblood paper — closing it

Change or stop your plan yourself, in writing, without a phone call.

Hands at a laptop beside an open notebook on oxblood paper

Care that is actually reviewed

An intake is read by a licensed provider before anything is prescribed. If treatment is not appropriate for you, you are told so — and you are not charged for a prescription you did not get.

  • Providers licensed in the state you are treated in
  • Dispensed by The Pharmacy Hub LLC, a licensed U.S. pharmacy

Frequently asked questions

What is erectile dysfunction?

Difficulty getting or keeping an erection firm enough for sex, often enough that it bothers you.

It has many causes — blood flow, other medications, sleep, alcohol, stress, conditions such as diabetes or high blood pressure — and which one is behind it is part of what a provider looks at.

What does Koves offer for it?

Two prescription tablets: sildenafil and tadalafil. Both are PDE5 inhibitors.

A licensed clinician assesses your symptoms and history and decides whether either is appropriate, at what dose and on what schedule — or recommends further testing or in-person care instead.

Which of the two would I get?

You do not decide that, and neither does Koves.

Sildenafil is taken ahead of time. Tadalafil can be taken ahead of time or as a smaller daily dose. Your provider chooses from your history and everything else you take, and can change it later by message.

What must I not take with either of them?

Nitrate medicines and riociguat. With a PDE5 inhibitor, the combination can cause a severe drop in blood pressure.

Certain heart conditions, alpha-blockers and other blood-pressure medicines need extra caution. Your provider reviews everything you take before deciding.

When should I get medical help?

Seek prompt care for an erection lasting more than four hours, sudden vision loss, or a sudden decrease or loss of hearing.

These are rare, and they are the ones not to wait on.

When do I take it?

Ahead of time, on the schedule your provider sets, and once in a day — never twice.

A large, fatty meal beforehand changes the timing, so your provider will go through that with you rather than leaving it to guesswork.

How is it different from tadalafil?

Both are PDE5 inhibitors and both are plain tablets. The difference is the schedule.

Sildenafil is taken ahead of time; tadalafil can be taken ahead of time or as a smaller daily dose. Which one you are prescribed is your provider’s decision, made from your history and everything else you take.

Daily or as needed — which will I get?

Your provider decides from your visit.

As-needed dosing suits people who can plan; a low daily dose suits people who would rather not think about it at all. Either can be changed later by messaging your provider.

Does food or alcohol change it?

Food does not meaningfully change how tadalafil is absorbed.

Substantial alcohol can lower blood pressure alongside it, and your provider will go through that with you before prescribing.

Two people walking fast through the frame together, one turning back mid-laugh, low and right against a wide empty field of oxblood paper

A year can pass

without ever deciding to wait.

Prescription products require an online visit with a licensed provider who decides whether treatment is appropriate. Not available in all states.