Lift the lock. Then shelf the note.
A Copenhagen reading shelf for six medicines. Each note keeps one labelled strength in the title line, is checked by Dr. Ingrid Sørensen, and goes on the shelf. We do not fill bottles here.
How a note is shelved
Lift, note, peer-pass, shelf
Lift
Pick the labelled lock this domain will hold in the title, the H1 and the three descriptions. Cialis stays 10 mg as needed. Viagra stays 25 mg. Levitra stays 20 mg. Neurontin stays 400 mg. Deltasone stays 5 mg. Glucophage stays 850 mg with food.
Note
Read the live FDA label, the EMA assessment when it adds a limit, MedlinePlus, and the named trial that moved the indication. Second-hand blogs are pointers, not sources.
Peer-pass
Dr. Ingrid Sørensen checks the draft against the same documents and writes the consultation herself. A named internist in Copenhagen stays on every issued note.
Shelf
The note goes live with a review date, a freshness stamp, and a cash window that uses sourced dollars only. We do not invent a pharmacy price. We do not rank a chain.
Short guides
The question people actually type
One short guide per lock: daily versus weekend tadalafil, sildenafil after food, what a 20 mg vardenafil start changes, gabapentin 400 mg for nerve pain, how a 5 mg prednisone course is tapered, and how to start metformin 850 mg with meals.
Short guide
Take the 25 mg sildenafil after dinner and the clock, not the steak, decides the first result
Daylight note
Put the 850 mg tablet on the plate, then watch the gut and the kidneys
Daylight note
After a course longer than a burst, the walk-down lives on 5 mg tablets
Short guide
A 20 mg vardenafil start is not the 2.5, 5 or 10 mg tablet - and it is not Staxyn
Short guide
A morning 5 mg Cialis or a 10 mg weekend tablet: how I sort the two tadalafil orders
Daylight note
Four hundred milligrams is a counted rung, not the last word on nerve pain
The specialist
Ingrid Sørensen signs every shelved note
Internal medicine, endocrinology, and clinical pharmacology in København. Nitrates stay banned with the PDE5 tablets. Gabapentin and prednisone are tapered. Metformin is paused around contrast and serious illness.
The locks
Six notes, each with one labelled strength in the title
Full notes sit under tadalafil, sildenafil, vardenafil, gabapentin, prednisone and metformin. The body may name the rest of the labelled ladder. The search line stays on the lock above.
alpha-2-delta ligand
A 400 mg Neurontin capsule is the mid step, and the taper is part of the cost conversation
PDE5 inhibitor
Start the first sildenafil after food at 25 mg
glucocorticoid
Five-milligram Deltasone tablets are how most tapers are counted, and the price follows that count
PDE5 inhibitor
Read the QT note before a 20 mg vardenafil order
PDE5 inhibitor
The weekend 10 mg sits on this shelf, not the daily 5
biguanide
The 850 mg Glucophage tablet is taken with food, and that meal belongs on the cash quote
The comparison
Three PDE5 locks on one row
The PDE5 comparison sets Cialis 10 mg as needed, Viagra 25 mg, and Levitra 20 mg on onset, food, duration and the nitrate rule. It does not pick a winner for a reader it has never met.
Centres
Labs and regulators the notes actually use
Sandwich, Bothell, Wuppertal, Ann Arbor, Kenilworth, Suresnes, then FDA and EMA. The centres page keeps the addresses.
Pfizer, Sandwich (discovery site)
Ramsgate Road, Sandwich, Kent CT13 9NJ, United Kingdom
Sildenafil started life here as UK-92,480, a hopeful angina candidate. Its numbers for chest pain were unremarkable; a side effect volunteers kept mentioning was anything but, and the programme was redrawn around it. Viagra, and the whole PDE5 family that followed, traces back to this Kent laboratory.
ICOS Corporation with Eli Lilly
22021 20th Avenue SE, Bothell, WA 98021, USA
Tadalafil was identified at this Washington biotech and carried through late trials with Eli Lilly. Its defining feature was written into the pharmacokinetics rather than the chemistry: it leaves the body far more slowly than its rivals, which is why a genuinely long-acting tablet — and later a low daily dose — became possible at all.
Bayer, Wuppertal
Aprather Weg 18a, 42113 Wuppertal, Germany
The Wuppertal laboratories developed vardenafil, later sold as Levitra and the orodispersible Staxyn. Milligram for milligram it binds PDE5 more tightly than either sibling, which is exactly why its labelled doses read so much smaller than sildenafil's on the same page.
Parke-Davis / Warner-Lambert (historic)
2800 Plymouth Road, Ann Arbor, MI 48105, USA
Gabapentin was drawn up at Parke-Davis as a GABA look-alike meant to calm over-firing neurons. It never engaged the GABA receptor as designed; it quietened calcium channels instead, and found a durable second life in nerve pain and epilepsy. Warner-Lambert, and later Pfizer, brought Neurontin to market from this Michigan base.
Schering Corporation / Upjohn (Deltasone)
Kenilworth, New Jersey, USA
Prednisone was created in the mid-1950s by chemically tweaking cortisone so it fought inflammation harder while holding less salt and water. Schering's laboratories did the synthesis; the Deltasone brand was later marketed by Upjohn. Seventy years on it is still one of the most widely used oral steroids in medicine.
Laboratoires Aron / Jean Sterne, Paris
Suresnes, Île-de-France, France
Metformin's modern career began in 1950s Paris, where the physician Jean Sterne studied a compound drawn from goat's-rue and named the result Glucophage — 'glucose eater'. Long overlooked, it is now the first-line tablet for type 2 diabetes worldwide, and the trial data behind that status is among the strongest in the field.
U.S. Food and Drug Administration
10903 New Hampshire Avenue, Silver Spring, MD 20993, USA
The American regulator whose approved prescribing information fixes the doses, boxed warnings and interaction rules we quote. Where a page here and the current FDA label diverge, the label is the authority — the nitrate contraindication for the PDE5 tablets above all.
European Medicines Agency
Domenico Scarlattilaan 6, 1083 HS Amsterdam, Netherlands
The EU regulator whose scientific assessments and product information sit beside the FDA label in our reading. Its reviews are particularly useful on the reasoning behind each approved European indication and on class-wide safety updates.