Barcelona · Est. 2026
Four medicines,
read line by line
Prednisone at 2.5 mg, tadalafil as 5 mg daily or 10 mg when needed, sildenafil across 25, 50 and 100 mg, vardenafil from 2.5 up to 20 mg. Each one gets a full profile, briefings that go further, and a reader thread answered by a named clinician. Nothing here is for sale.
The clinician
One physician answers every thread
Dr. Marc Vidal reviews each page before it is published and writes the reader answers himself.
How a page gets written
Label, strength, review, publish
The same four steps for every medicine, and different sentences each time.
Label
Each page starts with the current US prescribing information and the warning that comes before any dose: tapering for prednisone, nitrates for tadalafil, the meal for sildenafil, cardiac rhythm for vardenafil.
Strength
One labelled strength anchors the page so the title, the summary and the text cannot drift apart - 2.5 mg prednisone, 5 mg daily or 10 mg as needed, 25 to 100 mg sildenafil, 2.5 to 20 mg vardenafil.
Review
Marc Vidal reads the draft before it goes live and his name stays on the page. What he writes is general teaching, not a plan for the person reading it.
Publish
Reader questions are answered at the foot of the page. Price tables name licensed US pharmacies and link only to that chain, with discount-card services left in the captions.
Full method: how we review · Origins: research map · Who writes this: about
Medicines
Four profiles: the warning, then the labelled dose
Every profile carries an EM reference number, is checked against the current FDA label, and closes with a clinic thread of about a thousand words.
Tadalafil arrives as a 5 mg tablet taken every day or a 10 mg tablet taken before sex
Two prescriptions come out of the same molecule. One is 5 mg swallowed at roughly the same hour every day, which is also the strength approved in the …
Open the profile → CorticosteroidTwo guideline committees put a number on prednisone 2.5 mg before any pharmacy prices it
Prednisone 2.5 mg carries two separate meanings in current guidelines, and neither of them is about tablet size. The 2022 American College of Rheumato…
Open the profile → PDE5 inhibitorWhat men report on 25, 50 and 100 mg sildenafil, checked against the label
Sildenafil is the generic of Viagra, sold as 25, 50 and 100 mg tablets. Most adults are started on 50 mg about an hour before sex; the label allows an…
Open the profile → PDE5 inhibitorVardenafil is prescribed from 2.5 to 20 mg, and the label's usual adult start is 10 mg
Vardenafil is the molecule that was sold as Levitra. For most adults the label's starting dose is 10 mg taken about 60 minutes before sexual activity,…
Open the profile →Briefings
Seven briefings that go past the profile
Tapering, what a long steroid course costs, the three PDE5 inhibitors side by side, and an explainer on why an erection fails in the first place.
The third tablet in the class, and the two facts that decide whether it is yours
Vardenafil was approved in the United States in August 2003 and is now the least prescribed of the three older PDE5 inhibitors. It…
SafetyCorticosteroid harm by dose band: what starts at 2.5 mg and what waits for 7.5
Oral glucocorticoid harms do not share one risk curve, and treating them as a single alphabetical list makes monitoring worse. A G…
Comparing the classThree tablets aimed at one enzyme, and the four places their labels stop agreeing
Sildenafil, tadalafil and vardenafil are licensed for erectile dysfunction in the United States and all three are dispensed as gen…
Dosing schedulesPicking between a tablet every morning and a tablet before the evening
The United States label carries two tadalafil regimens that share four tablet strengths and almost nothing else. Used as needed, 1…
Clinical guideStopping prednisone: which courses end on the last tablet, and which need 2.5 mg steps
Weeks, not milligrams, decide whether prednisone needs a reduction schedule. The 2024 joint guideline from the European Society of…
Timing and foodFifty milligrams an hour ahead, and what the hour is built on
For most men the instruction is 50 mg taken about an hour before sexual activity, with the label permitting anything from 30 minut…
Assessment before treatmentFrom the arteries to the blood tests, and only then to a prescription
An erection is a vascular event that depends on an intact nerve supply, enough testosterone to sustain desire, and arteries able t…
Last Updated
Elysia Med
Four medicines, read closely enough to be useful
Every dose, interval and interaction on this site is checked against the current prescribing information, then reviewed by a named clinician before it is published.
Open the medicines