Food and a QT strip sit in front of a 5 mg Levitra tablet

A 5 mg review that starts with dinner and an ECG

Before we hand anyone a 5 mg Levitra tablet, we ask what was on the plate and what the last ECG actually showed.

Levitra tablets on the US label are 2.5, 5, 10, and 20 mg. Most men start at 10 mg about 60 minutes before sex. We still feature 5 mg on this page because that is the rung the label keeps pointing at for age 65 and over, for a stable alpha-blocker, and for moderate hepatic impairment. Reviews that skip those gates are reviewing a different patient.

Sexual stimulation is still required. The 5 mg tablet does not invent an erection. It keeps cGMP from being torn down after arousal has already opened the nitric-oxide door. Men who treat 5 mg like a weaker party favor are reading the milligram, not the potency.

Vardenafil is more potent per milligram than sildenafil, which is why the numbers look small. 5 mg is a real clinical dose. It is also the dose we write when we want less exposure, not when we want less honesty.

This molecule arrived in 2003, after sildenafil, and it never owned the market the way the first tablet did. That commercial fact does not make it a lesser PDE5 inhibitor. It does mean some pharmacies stock it less, and it means we pick it for a reason - tolerability, a prior response, or a man who already sits on the 5 mg lane.

The longer map of this molecule is at vardenafil complete guide. If you came from the antiparasitic shelf by mistake, that molecule is ivermectin - different desk, different rules.

Why 5 mg is the dose we write first for some men

Sixty-five, a Child-Pugh B liver, or a stable alpha-blocker - those three stories open on 5 mg, not on 10.

Men 65 and older run higher levels - mean Cmax about 34% higher and AUC about 52% higher than younger men in the label's volunteer work. Phase 3 still enrolled hundreds of older patients at 5, 10, and 20 mg, but the labeled consideration is a 5 mg start. We follow that more often than we argue with it.

Child-Pugh B liver: start 5 mg, and do not climb past 10 mg. Child-Pugh C: do not use this tablet. Mild hepatic impairment barely moves the curve and does not force a change. Severe liver disease is not a "careful 5 mg" story. It is a different plan.

Stable alpha-blocker therapy: start vardenafil at 5 mg (2.5 mg if a strong CYP3A4 inhibitor is already on the list). The man should be hemodynamically quiet on the alpha-blocker first. Then we add the PDE5 tablet. Standing dizziness is the complaint that tells us the stack is too tight.

CYP3A4 blockers rewrite the milligrams. Ritonavir or cobicistat: no more than 2.5 mg in 72 hours. Indinavir, saquinavir, atazanavir, ketoconazole 400 mg, itraconazole 400 mg, clarithromycin: no more than 2.5 mg in 24 hours. Ketoconazole 200 mg: cap at 5 mg in 24 hours. Erythromycin: cap at 5 mg in 24 hours. Those are label caps, not desk folklore.

20 mg remains the usual maximum if a man climbed from 10 and tolerated it. 5 mg is not that ceiling. It is the rung we occupy when exposure is already high or the blood-pressure stack is already busy.

A high-fat plate blunts the peak on Levitra

High-fat meals cut the peak on vardenafil by 18% to 50% in the food studies. The area under the curve stays put.

Vardenafil is absorbed fast. After a 20 mg fasted dose, Tmax usually sits between 30 minutes and 2 hours, median about 60. Absolute bioavailability is only about 15%, which is one reason the milligram numbers stay small. The 5 mg tablet follows the same clock. It does not get a private onset.

Two food-effect studies on the label showed high-fat meals cut Cmax by 18% to 50%. AUC held. So the amount you eventually absorb is similar. The height of the peak is not. Men who swallow 5 mg after a fried plate and expect a sharp 45-minute onset are measuring the meal, not the molecule.

The tablet may be taken with or without food. That sentence is permission, not a dare. If the evening is built around a heavy plate, dose before the fat or give the peak time to arrive late and lower. The timing note we send home is vardenafil timing and food.

Half-life is about 4 to 5 hours in ordinary clearance, so this stays an on-demand tablet. With ritonavir the half-life stretched to 26 hours in the interaction work - that is why the 2.5 mg / 72-hour cap exists. Do not borrow that schedule for a man who is not on ritonavir.

The orally disintegrating tablet is not a milligram-for-milligram twin of the swallowed 5 mg tablet. Absorption differs. If you were written one form, stay on that form until someone who owns the prescription changes it.

Class IA and III antiarrhythmics close this molecule

Congenital long QT and certain rhythm drugs are avoid rules, not footnotes under a 5 mg script.

Vardenafil can prolong the QT interval a little. Therapeutic 10 mg and a supratherapeutic 80 mg dose both moved QTc in the thorough QT work, in the same small direction as the study's active control. Small is not zero. Stacking small on another QT drug is how rooms get interesting.

The label's avoid list is specific: congenital long QT, Class IA antiarrhythmics (quinidine, procainamide), and Class III agents (amiodarone, sotalol). We do not "watch it" on those combinations. We pick another PDE5 inhibitor. sildenafil and tadalafil do not carry this fingerprint the same way.

Other QT-prolonging drugs hide in non-cardiac bottles - some antibiotics, antipsychotics, antiemetics. The 5 mg start does not cancel that math. It only lowers vardenafil's own contribution. Bring the full list, not "just the heart ones."

A personal or family story of sudden death, unexplained syncope, or a known long QT is enough to get an ECG on the desk before we write 5 mg. Healthy men with a clean list do not all need a tracing. The ones with a hint do.

The cardiac reading we keep next to this monograph is vardenafil safety and heart. Read that before you treat a 5 mg tablet as "the gentle one."

Nitrates and poppers still mean no Levitra

Poppers and nitroglycerin still collide with vardenafil. Five milligrams does not buy an exception.

The class stop did not get softer because the tablet says 5 mg. Organic nitrates and nitric-oxide donors remain contraindicated - regular or intermittent, any form. Poppers count. Riociguat counts. A smaller milligram does not buy a shared night with nitroglycerin.

Keep about 24 hours in mind as the practical gap men ask for, and still tell the emergency team the word vardenafil before anyone sprays nitro. Do not self-clear a nitrate from a forum timeline. If chest pain is part of your life, this molecule may not belong on the card at all.

Alpha-blockers are the other pressure story. They are not the nitrate ban. They are a 5 mg start on a stable background, with a pause between swallows if standing dizziness appears. Volume depletion makes the pair less kind.

Banner-ad "Levitra 5 mg" strips are a safety problem here for a second reason. A counterfeit tablet plus an amiodarone bottle is two unknowns. This desk does not fill. A licensed pharmacy and a named prescriber are the only way the QT and nitrate maps stay real.

If the nitrate history is the thing that actually blocks treatment, say so early. We will not sneak a 5 mg tablet past a spray in the glove box.

Flush, faint, skip - what a 5 mg night can report

A 5 mg night can flush the face and still be a success. A skip in the pulse is a different report.

The ordinary list is still vasodilation: headache, flushing, rhinitis, dyspepsia, dizziness. Some men notice less of the blue visual tinge than they did on sildenafil, because this molecule is tighter on PDE5 versus retinal PDE6. "Less" is not "never."

Priapism past four hours is still an emergency. Sudden vision or hearing loss is still a same-day stop. Add a vardenafil-specific line: new palpitations, syncope, or a heart that races or skips after a dose deserves a look, not a wait-and-see, because of the QT effect.

Phenylalanine sits in these tablets (aspartame). A man with PKU needs the combined daily load counted - 1.4 mg phenylalanine in a 5 mg tablet, more in the higher strengths. That is a label detail most reviews skip and a real one if PKU is on the chart.

Alcohol still works against you. A drink is ordinary. Several drinks drop pressure, dull arousal, and then the 5 mg tablet gets blamed. Hydration and a lighter pour fix more 5 mg complaints than a jump to 10.

Monitoring after the first nights is a conversation: did arousal produce a usable erection, did it last, did anything electrical or visual show up. There is no weekly blood test for this tablet. New faint or skip is the line that brings a man back in before the next dose.

After the first 5 mg trial, what we change

If two clean 5 mg nights on a light plate still fall short, we change the plan - we do not pretend 5 mg was a placebo.

If 5 mg was the right start - age, liver B, alpha-blocker - and two clean nights on a lighter plate were still soft, we can climb toward 10 mg if the ECG story and the drug list still allow it. Child-Pugh B still caps at 10. A man on ritonavir does not climb. He stays inside the 2.5 mg / 72-hour box or he leaves the molecule.

If 5 mg was only a cautious open in a man who could have started at 10, and the nights are clean, stepping to the usual 10 mg is the labeled move. 20 mg is the usual top if 10 is tolerated and still short. We do not invent 40.

A fair miss on 20 mg across several clean attempts is a diagnosis question, not a higher tablet. Testosterone, vessels, mood, and a switch to sildenafil or tadalafil are the next tools. QT history that blocked vardenafil in the first place already points at those two.

Bring every bottle. The 5 mg lane exists because exposure and rhythm and pressure stacks are easy to miss when the man only mentions "the ED pill."

A 5 mg Levitra tablet does not get past a fatty plate or a dirty QT strip. Those two gates are why we write this dose for some men and refuse the molecule for others. Talk with your own clinician before you move a milligram. The desk disclaimer is the line that keeps this page educational.

Cost Plus through Sam's Club on a 5 mg ten-count

Ten 5 mg tablets sit behind a QT read. Mail and warehouse usually beat a walk-in without a card.

A 5 mg start is a counted fill after the QT strip, not a 20 mg ten-pack and not the CVS-Target-Walmart-Albertsons 5 mg quartet already used on a sibling line. This desk quotes 5 mg × 10 at Cost Plus Drugs, Kroger, Walgreens, and Sam's Club.

GoodRx's public 5 mg listing is often a 30-count (coupon print near $125 against a four-figure retail average). A ten-count is a shorter slip; I will not invent a third of that cell as your aisle price. Mail cash at Cost Plus and warehouse cash at Sam's Club usually sit kinder than a Walgreens walk-in without a card. Kroger is grocery coupon. ZIP still owns the number.

Brand Levitra and Staxyn ODT are different rows. A 5 mg strip that never asks about amiodarone is not a bargain. Prescription and a rhythm read first. This desk does not sell.

Consultation

Your questions, answered

Answered by Dr. Ethan Cole, MD · Urology & men's sexual health

The 5 mg script raises food and rhythm questions first. Here is how this desk answers them in clinic, before anyone treats a review as a personal dose or an order cart.

Why did you write 5 mg when friends start at 10?

Because the label keeps 5 mg for stories that raise exposure or stack pressure. Age 65 and over, a stable alpha-blocker, and Child-Pugh B liver all open there. Most men without those stories still start at 10 mg about an hour before sex, then move between 5 and 20 mg. Your friend is not your clearance. Vardenafil is potent per milligram, so 5 mg is a real dose, not a timid half-measure. If nights on 5 mg are clean and still soft, and the ECG and list allow it, we can climb. We do not open at 10 to match someone else's bottle. The map is at vardenafil complete guide. MedlinePlus keeps the plain names at MedlinePlus.

I take amiodarone. Is any Levitra dose on the table?

No. Amiodarone is a Class III antiarrhythmic. Vardenafil can prolong QT. The label says avoid that pair, along with sotalol and the Class IA drugs quinidine and procainamide, and avoid the tablet in congenital long QT. We do not bargain down to 5 mg or 2.5 mg to sneak past that line. We change molecules. sildenafil or tadalafil can still be in play after we read the rest of your list. Bring every bottle, including antibiotics and antipsychotics that also stretch QT. This is the case where vardenafil is a fine drug for someone else and the wrong one for you. A 5 mg start is not a loophole. The FDA label names those antiarrhythmic classes in the same avoid language we use at the desk.

High-fat lunch, then 5 mg at 6 pm - will it still peak?

It will still be absorbed. The peak may be lower. High-fat meals cut Cmax by 18% to 50% in the food-effect work, while AUC held. If lunch was hours ago and you are no longer sitting on that fat, 6 pm is often a fair swallow. If lunch is still in the room - or dinner is about to be fried - expect a later, flatter peak and do not call that a failed 5 mg. Dose before the heavy plate, or give the evening the delay. Arousal still has to start. A 5 mg tablet does not get a private onset just because the number is small. The hour-by-hour note is vardenafil timing and food. Do not add a second 5 mg the same day to chase a meal.

What does a QT caution actually mean on a 5 mg script?

It means we looked at the heart's reset time before we wrote the tablet. Vardenafil moves QTc a little at ordinary and at high exposure. Alone, on a clean list, that small move is why we mention it rather than ban the drug. Combined with congenital long QT or Class IA or III antiarrhythmics, the label's word is avoid. Other QT drugs in non-cardiac bottles add up. 5 mg lowers vardenafil's own share. It does not erase a quinidine. Unexplained syncope or a family sudden death gets a tracing first. A new skip or faint after a dose brings you back in - do not wait for the next weekend. Reviews that never mention an ECG are reviewing a different risk. vardenafil safety and heart is the longer strip.

Quinidine or sotalol - same rule as amiodarone?

Yes. Quinidine and procainamide are Class IA. Sotalol and amiodarone are Class III. All four sit on the avoid list with vardenafil, and congenital long QT sits there with them. There is no "tiny 5 mg on a good day" exception in that paragraph. We pick another PDE5 inhibitor and we keep treating the ED. Men are sometimes surprised that a rhythm drug they have taken for years still blocks this one tablet. That surprise is why we ask before we write, and why a 5 mg review that never mentions the ECG is not a review we trust. If the antiarrhythmic later comes off - and only if it truly comes off - we can reopen the question. Until then, Levitra stays on the shelf.

I am 70 with a fair ECG. Is 5 mg the forever dose?

Not automatically. Older men start at 5 mg because levels run higher, not because 10 mg is forbidden forever. If two or three clean nights on a lighter plate are still soft, and you are not on a QT drug or a CYP cap, we can step toward 10 mg. 20 mg remains the usual top if 10 is tolerated and still short. A fair ECG gets you into the conversation. It does not freeze you at 5 mg for life, and it does not let us ignore amiodarone if that bottle appears later. Child-Pugh B still caps at 10. Severe hepatic impairment still keeps this tablet off the card. Age opened at 5. Response and the list decide whether we stay there.

Alpha-blocker plus 5 mg - same night or staggered?

Same calendar day is often fine once you are stable on the alpha-blocker. Same swallow-minute is how people get dizzy. The labeled start on a stable alpha-blocker is 5 mg (2.5 mg if a strong CYP3A4 inhibitor is already there). Be quiet on the prostate or pressure pill first. Then add vardenafil. If standing dizziness shows up, separate the clocks and tell us. This is not the nitrate ban. It is an additive blood-pressure drop. Volume depletion and other antihypertensives make it less forgiving. If prostate symptoms and ED both matter, daily tadalafil is sometimes the cleaner single-molecule plan - that discussion lives at tadalafil, not as a reason to skip the 5 mg start here.

Moderate liver disease and 5 mg - can I climb?

A little, not a lot. Child-Pugh B starts at 5 mg and must not exceed 10 mg. After a 10 mg dose in that group, Cmax and AUC were about 130% and 160% higher than in healthy controls. That is why 20 mg is not on the menu. Child-Pugh A barely moves the curve and does not force a change. Child-Pugh C: do not use vardenafil. If your hepatologist's letter says "moderate," we write 5 mg, we watch the nights, and we stop at 10. If the letter says "severe," we leave this molecule. Do not climb on your own because a friend takes 20 mg with a healthy liver. His AUC is not yours. The 5 mg lane exists because that fold is real.

Ritonavir and Levitra - which tablet even exists?

The 2.5 mg tablet exists for this reason. Ritonavir raised vardenafil AUC about 49-fold and Cmax about 13-fold, and stretched half-life to about 26 hours. The cap is a single 2.5 mg dose in a 72-hour period. Cobicistat uses the same 72-hour box. That is not a 5 mg story and it is not a "take it when you want" story. If 2.5 mg on that schedule is not a life you can live, we pick another tool. Do not split a 5 mg tablet and guess. Do not take leftover 10 mg from a friend. Bring the exact antiviral names. Indinavir, saquinavir, atazanavir, and several azoles have their own 2.5 mg / 24-hour caps. The numbers are on the label because the folds are that large.

Palpitations after 5 mg - sit or go in?

Go in if they are new, if you fainted, if the heart races or skips in a way you have not felt before, or if chest pain tags along. Vardenafil's QT effect is why we do not shrug that off as "just nerves." A one-off flutter that vanishes can wait for the next visit, but I would rather see you once than hear about a collapse later. Stop further doses until someone reads the strip. If another QT-prolonging drug was left off the list, say it on the way in. This sits next to the class emergencies: a four-hour erection, sudden vision loss, sudden hearing loss. NHS pages stay blunt on when ED tablets need urgent care.

Is the melt tablet the same as a 5 mg swallow?

No. The orally disintegrating tablet is a different product with its own absorption. It is not a milligram-for-milligram twin of the film-coated 5 mg tablet, and you should not swap them to "make 5 mg faster." If you were written the swallow tablet, stay on the swallow tablet. If swallowing is the actual problem, we pick the melt form on purpose, at the dose that form is labeled for, not by splitting or matching numbers across bottles. The melt is not a stronger 5 mg and it is not a QT-safe loophole. Food and CYP rules still apply. Ask before you substitute. Guessing between forms is how men end up over-exposed or under-tested.

Nitrates last month, Levitra this month - how long a gap?

If the nitrate is still in the house for chest pain, Levitra is the wrong tablet, 5 mg included. If the nitrate was a hospital course that has truly ended and you no longer carry spray or tablets, we can talk - after cardiology agrees sex-plus-vasodilation is reasonable. There is no forum number that converts "I had nitro in March" into a safe 5 mg in August if you still keep a bottle "just in case." Intermittent use counts as use. Poppers count. Tell the emergency team the word vardenafil if pain starts after a dose. A smaller milligram does not buy a shared night with nitroglycerin. We will not time a shared night. We will decide whether this molecule belongs on the card at all.

5 mg felt weak after two clean nights. Next step?

If those nights were actually clean - lighter plate, modest alcohol, real arousal, a full hour - we look at a step toward 10 mg, if the QT list, liver class, and CYP caps allow it. Child-Pugh B still stops at 10. Ritonavir stays in the 2.5 mg / 72-hour box. If 5 mg was only a cautious open and the ECG is fair, 10 mg is the usual labeled middle. If 10 and then 20 still fail across several clean attempts, we stop climbing and look at testosterone, vessels, mood, or a switch to sildenafil or tadalafil. We do not add a second 5 mg the same day. We do not invent 40 mg. Two clean misses are data, not a verdict on you.

Where does the heart-and-food reading live?

Food and the hour live at vardenafil timing and food. The QT strip, nitrates, and who should skip this molecule live at vardenafil safety and heart. The wider map is vardenafil complete guide. Sister tablets: sildenafil and tadalafil. Read the heart piece first if you take any rhythm drug - a 5 mg review that never mentions QT is reviewing a different patient. A fatty plate is the other gate; do not judge 5 mg on a fried night and then ask for 20. None of those pages fills a 5 mg order. Your clinician owns the script, including whether 5 mg is a start or a stay. Read the desk disclaimer before you treat a review as a plan. If label and page disagree, the label wins. NCBI holds the QT papers if you want them.

General education from a clinician, not personal medical advice. Bring your own history to your own prescriber.