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Cialis dosage: daily vs as needed options

Cialis dosage depends on why you take tadalafil and whether it is daily or as needed. See label-based dosing basics and limits.

Written by Vitals Vault Medical TeamMedically reviewed by Robert Lufkin, MD, Chief Medical Officer and Arti Chandra, MD, MPH, IFMCP, Board-certified in family and integrative medicine
Published September 30, 2026

Key facts

Price
Tadalafil Daily is $129/month (billed $387 every 90 days), charged only after a clinician approves it.
How it works
Answer a few health questions online. A licensed clinician reviews them. If approved, it ships to your door.
Who can get it
Adults 18 or older. A licensed clinician reviews your health history and decides whether treatment is appropriate for you. Availability depends on the state you live in.

Medically reviewed by Robert Lufkin, MD and Arti Chandra, MD, MPH, IFMCP

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Table of Contents

  1. 1Cialis dosage basics
  2. 2Cialis dosage chart (label-based)
  3. 3When to talk to a clinician
  4. 4Pro tips for safer use
  5. 5Related

Table of Contents

  1. 1Cialis dosage basics
  2. 2Cialis dosage chart (label-based)
  3. 3When to talk to a clinician
  4. 4Pro tips for safer use
  5. 5Related

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Cialis (tadalafil) dosing is not one size fits all. The FDA label includes different dosing approaches depending on whether tadalafil is used for erectile dysfunction (ED), benign prostatic hyperplasia (BPH), or both. This guide summarizes label based dosing information for education, not to help you self adjust a dose. If you want to sanity check questions against your own health history and other meds, Vitals Vault includes PocketMD to help you prepare for a clinician conversation.

  • Cialis dosage (tadalafil) is either daily or as needed, depending on the condition treated.
  • For erectile dysfunction, the FDA label includes both as-needed and once-daily options.
  • For BPH, tadalafil is taken once daily; some people have ED and BPH together.
  • Do not use tadalafil with nitrates; dangerous blood pressure drops can occur.

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Cialis dosage basics

  • Two dosing styles

    The FDA label for tadalafil includes an as needed option and a once daily option for ED. Which approach is used depends on your goals, side effects, and other health conditions, and it should be decided with the prescribing clinician.

  • Different indications, different dosing

    Tadalafil is labeled for ED, for BPH symptoms, and for ED with BPH. The dose and timing described in the label differ by indication, so a dosing chart should always specify the condition being treated.

  • Do not mix with nitrates

    Tadalafil can lower blood pressure. Using it with nitrates (for example nitroglycerin) is contraindicated because it can cause a severe drop in blood pressure.

  • Clinician adjustments are common

    The label describes starting doses and how clinicians may adjust based on response and tolerability. Dose changes should be handled by your prescriber, especially if you take blood pressure medicines or have kidney or liver problems.

Brand vs generic

Cialis is the brand name. Vitals Vault offers generic tadalafil, the same active ingredient. We do not imply we dispense brand Cialis.

Cialis dosage chart (label-based)

Tadalafil dosing by indication (from FDA label)
IndicationHow it is takenLabel dosing notes
Erectile dysfunction (ED), as neededTaken prior to anticipated sexual activityThe label describes a starting dose and possible adjustment based on response and tolerability.
Erectile dysfunction (ED), once dailyTaken once daily, at about the same time each dayThe label describes daily dosing options; daily dosing is not tied to timing of sexual activity.
Benign prostatic hyperplasia (BPH)Taken once daily, at about the same time each dayThe label describes once daily dosing for BPH symptoms.
ED with BPHTaken once daily, at about the same time each dayThe label describes a once daily dose when treating both conditions together.
  • Do not exceed label limits

    The tadalafil label sets maximum recommended dosing frequency for each regimen. If you feel you need more frequent dosing or higher doses, that is a prescriber conversation, not a self adjustment decision.

  • Missed dose (daily use)

    If tadalafil is prescribed once daily, follow the patient instructions from your prescriber and the FDA label guidance for missed doses. If you are unsure what to do after a missed dose, ask your pharmacist or prescribing clinician before taking another dose.

  • Kidney and liver considerations

    The FDA label includes dose adjustments and limitations for people with kidney impairment or liver impairment. Because these changes depend on your specific situation, your prescriber should set the dose and monitor for side effects.

  • Common side effects that affect dosing

    Headache, flushing, indigestion (dyspepsia), nasal congestion, back pain, and muscle pain are listed in the label as common adverse reactions with tadalafil. If side effects are bothersome, your clinician may adjust the regimen or consider alternatives.

  • Serious risks to know

    Seek urgent care for chest pain, severe dizziness or fainting, an erection lasting longer than 4 hours (priapism), sudden vision loss, or sudden hearing decrease or loss. These are listed as serious warnings or adverse events in the prescribing information.

Avoid nitrate medications

Do not take tadalafil if you use any form of nitrates. This interaction is a labeled contraindication because it can cause a dangerous drop in blood pressure.

When to talk to a clinician

  • You take heart medicines

    Tell your clinician if you use nitrates or riociguat, or if you take alpha blockers or blood pressure medications. The label includes important interaction and blood pressure cautions that can affect whether tadalafil is safe for you.

  • You have chest pain with sex

    If you develop chest pain during sexual activity, seek emergency care. ED can also be associated with cardiovascular disease, so new or worsening ED is a reason to discuss heart risk factors with a clinician.

  • You have kidney or liver disease

    Kidney and liver impairment can change tadalafil exposure, and the FDA label includes dosing limitations for these situations. Your prescriber may choose a different regimen or a different medication.

  • You have painful or prolonged erections

    An erection lasting longer than 4 hours needs urgent evaluation to prevent tissue damage. If you have a history of priapism or conditions that increase risk, discuss it before using tadalafil.

  • You notice vision or hearing changes

    Sudden vision loss or sudden decrease or loss of hearing requires urgent medical attention. These events are rare but are listed as serious warnings in the prescribing information for PDE5 inhibitors including tadalafil.

Pro tips for safer use

  • Bring a med list

    Include nitrates, alpha blockers, and blood pressure meds when you ask about tadalafil.

  • Name your goal

    Tell your clinician if you want daily spontaneity or as needed dosing.

  • Report side effects early

    Headache, flushing, and muscle aches can guide regimen adjustments.

  • Ask about ED causes

    ED can relate to vascular health, hormones, stress, or medications.

  • Know urgent symptoms

    Chest pain, fainting, priapism, and sudden vision or hearing changes need urgent care.

Related treatments

Tadalafil Cialis DosageA Complete Guide Cialis Tadalafil Side EffectsCan I Take 10 Mg Of Cialis DailyCan You Take Cialis And Viagra TogetherCialis 20mg
Tadalafil Daily

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Tadalafil Daily is $387 per 90-day supply, charged only after a clinician approves it.

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Frequently Asked Questions

What is the typical cialis dosage for ED?

The FDA label includes both as needed dosing and once daily dosing for ED, with starting doses and possible adjustments based on response and tolerability. Your clinician chooses the regimen that fits your health history and other medications.

Is there a cialis dosage chart I can follow?

A safe chart has to be tied to the labeled indication, such as ED as needed, ED once daily, BPH, or ED with BPH. Use the FDA prescribing information as the reference, and confirm your exact regimen with your prescriber.

Can I take Cialis every day?

The tadalafil label includes a once daily option for ED and once daily dosing for BPH and ED with BPH. Daily use is not right for everyone, especially if you have kidney or liver disease or take interacting medications, so confirm with your clinician.

What happens if I miss a daily tadalafil dose?

Follow the instructions from your prescriber and the FDA label guidance for missed doses. If you are unsure what to do after a missed dose, ask your pharmacist or clinician before taking another dose.

What medications should not be taken with tadalafil?

Nitrates are contraindicated with tadalafil because the combination can cause a dangerous drop in blood pressure. The label also warns about interactions and blood pressure effects with certain other medicines, so share your full medication list with your prescriber.

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