Why It Goes Under Your Tongue

What sublingual means

Sublingual simply means under the tongue. You place the tablet there and let it dissolve rather than swallowing it with water. The floor of the mouth is thin and the blood vessels beneath it sit close to the surface, so medicine dissolving there passes almost directly into the bloodstream.

The route is not new or unusual. Nitroglycerin for chest pain has been given this way for decades precisely because it has to work in seconds rather than half an hour.

The journey a swallowed tablet takes

A normal tablet has to break down in your stomach, cross the wall of the intestine, and then pass through the liver — which destroys a share of the dose before the remainder reaches general circulation. Only what survives that trip goes on to do anything.

The trip costs time. It also makes the result less predictable, because how long it takes depends on what you last ate and how much of it.

What that changes in practice

• It starts sooner. Around 15 minutes rather than the 30 to 60 a swallowed tablet usually needs.
• Dinner matters less. A large or fatty meal noticeably delays a swallowed pill. It affects a sublingual tablet far less.
• No water needed. No glass, and no moment where somebody watches you take something.
• It is more consistent. Less of the dose is at the mercy of your digestion, so timing varies less from one night to the next.

Both sildenafil and tadalafil benefit, but the fast one benefits most — saving twenty minutes matters more to a medicine whose entire job is getting going quickly.

The mistakes that waste a dose

Swallowing it from force of habit. The one that catches most men out. Nothing bad happens, but you have just paid for a delivery route you then declined to use.

Drinking straight afterwards. Rinses away medicine that has not been absorbed yet. A few minutes is enough.

Waiting for it to do something by itself. It will not. It extends your arousal response rather than creating one, so men who sit and monitor themselves usually conclude nothing happened when in fact nothing was asked of it.

Reaching for a second when the first feels slow. One in 24 hours, always. The enzyme is already largely occupied at your prescribed dose, so tablet number two buys you the headache and almost none of the benefit.

Storing it

Keep it in the packaging it arrived in, somewhere dry and away from direct heat, and out of reach of children. Do not decant it into a pill organiser — sublingual tablets are more sensitive to moisture than coated ones, and you lose the label that records what it is and what strength.

Never share it. It was prescribed against your health form and nobody else's, and the exclusions are serious enough that handing one to a friend is a genuinely bad idea.

Common questions