Udenafil
Udenafil is a PDE5 inhibitor used for erectile dysfunction, sold here as Zydena 100mg tablets — a single strength, taken when needed before sex.
Udenafil for erectile dysfunction
Udenafil is a PDE5 inhibitor, a tablet that prolongs the body's own erection signal. It is used around the world for erectile dysfunction, where an erection is hard to get or will not last long enough for sex. The penis releases nitric oxide when something sexual is happening, and that raises a chemical messenger called cGMP, which lets the blood vessels there relax and fill. Udenafil blocks the enzyme that clears cGMP away, so the vessels stay open longer and blood stays in place. Without arousal nothing happens; the tablet is not a trigger on its own.
Taking a udenafil tablet
Swallow one tablet whole with water when you need it — before sex rather than hours ahead — and not more than once in any day. The strength sold here is a single 100mg tablet, so there is nothing to split. Udenafil is taken as needed rather than every day, so it does not build up in the body and you only use it on the days you want it.
Side effects to expect
Headache is the one men report most, often with a flushed, warm face, a stuffy nose or indigestion. Dizziness and aching back or muscles turn up too. These are usually mild and settle as you get used to the medicine. Two rare effects are worth knowing: a sudden loss of vision in one or both eyes, and a sudden change in hearing. If an erection is still there four hours on, urgent treatment is needed.
Medicines to keep away from udenafil
Nitrates matter most. Glyceryl trinitrate, isosorbide mononitrate, isosorbide dinitrate and similar medicines for angina or chest pain can drop blood pressure to a dangerous level when udenafil is in the body. Ketoconazole, itraconazole, clarithromycin and the protease inhibitors used for HIV slow the breakdown of udenafil, raising its level in the blood and making side effects more likely. Grapefruit juice does a milder version of the same thing.
The udenafil sold here
Zydena is the name on the tablets sold here: Zydena, 100mg of udenafil in each one, sitting in the shop's erectile dysfunction range. Udenafil is the ingredient; Zydena is the brand it is sold under.
Sources
- Udenafil | C25H36N6O4S | CID 135413547 - PubChem - NIH — PubChem
- UDENAFIL — American Medical Association (USAN Council)
Is Udenafil available to order in Hong Kong?
Udenafil can be ordered online with delivery to Hong Kong. The page lists 100mg generic Zydena, also sold as Udenafil tablets, as tablets. An order can be cancelled within 24 hours if it has not been dispatched, and support answers 24/7 in English and Cantonese.
How are Udenafil prices shown?
It depends on the product, strength and pack size. The udenafil product listed here shows its current prices in HKD or the currency you select.
Do I need a prescription to order Udenafil?
PockDose does not ask you to upload a prescription when you order udenafil. See the ordering FAQ for details.
What brand names does udenafil have?
Zydena is a brand name of udenafil. Here, udenafil can be bought online as generic Zydena. These are generics, not the original brand.
Can I drink alcohol with udenafil?
One or two drinks rarely cause problems. A big night out is different: alcohol and udenafil both widen blood vessels, so headache, flushing, dizziness and a sharp drop in blood pressure become likelier, and drink itself can make an erection harder to get. Go easy on the evening you plan to use a tablet.
Can I take udenafil every day?
Udenafil is normally taken when you need it rather than on a fixed daily schedule, and one dose in any 24 hours is the limit. It does not build up a daily effect, so there is nothing to gain from taking it on days when you do not want it.
Is Zydena the same as udenafil?
Yes. Zydena is a brand name for udenafil, so the tablet and the ingredient name describe the same medicine. The version sold here carries 100mg of udenafil per tablet.
Can I take udenafil with blood pressure tablets?
Udenafil relaxes blood vessels, and alpha-blockers such as doxazosin and terazosin do the same, so the two together can lower blood pressure enough to cause dizziness or fainting. Other blood pressure medicines can add to that drop.