What does "under the tongue" mean?

[FatHeart]

GTN spray for angina. Does "under the tongue" mean "underside of your tongue" or "the floor of your mouth"? Confused by the term and leaflet not clear which of these two it is. So spray onto raised tongue or onto area vacated by tongue?

[Stented]

I think you were right first time.Tongue up and one or two puffs only

👍

[Stentrunner]

My cardiac nurse got me to raise my tongue, then sprayed downwards onto the floor of my mouth.

[Mountwood]

I don't think it matters. If you spray onto the floor of your mouth some of the spray will come into contact with the underside of your tongue as soon as you lower it.

[Mentdent]

Glyceril trinitrate absorbs through the oral mucosa. The thinnest layer of oral mucosa is the floor of your mouth and the underside of your tongue. If it’s sprayed there it works as quickly as possible.

Just lift your tongue up and spray it at the joint of your tongue and floor of your mouth.

If you miss it will still work. Just not as quickly. Don’t do extra squirts because it can cause a nasty headache.

[Hidden]

I used to just take in a deep breath, lift my tongue and spray it in the general vicinity in the space under my tongue without aiming anywhere specific. The spray always worked (along with the lovely headache).

[Mr_Spoon]

I too just spray in the general area of both, always does the trick, however, I did once spray my lip once, went numb for 5 minutes 🤦‍♂️😂