I was thinking RO ?
Indeed and just as she is reaching her plateau you pop your head up and say "Sorry luv yer times up"

Anyway have looked at this further out of interest.
Glycerol Trinitrate (GTN) has been in use since way before I was born, so is far from a new drug so does not need all the usual lengthy trials in terms of safety etc. What is different is this is an ‘off label’ use and also the UK development company Futura Medical is claiming a unique method of delivery DermaSys® with the mode of action of its topical gel containing the GTN (which presumably they have patented?)
The story appears to start in 2018 with this first trial involving around 300 volunteers and which showed its efficacy to be ‘statistically’ significant.
External Link/Members OnlyThere is a second trial in 2020 to look more at safety among partners and which found very minimal side effects.
External Link/Members OnlyFinally the FDA insisted that a phase 3 trial be conducted to examine use over a longer period of time (24weeks) and once again the results seem favourable. One aspect of this is that tolerance can occur with GTN with repeated and frequent use but this trial suggests that is not an issue. Results were announced last year. This is a press release of this trial
External Link/Members OnlySome points I have picked up on.The big plus is the rapid onset. My suspicion is still that the peak period of effectiveness is around 10 minutes after application and then declining to zero by up 30 mins, but I cannot find anything to confirm this.
The early study suggests effectiveness is maximised in those with mild to moderate ED. Later study suggests this is also statistically effective with moderate to severe.
It is interesting that Tadalfil 5mg was used as the comparator (which is the low daily dose) and not the 'on demand' dose of 10 to 20mg? It does also say that whilst Tadalfil scored better in terms of the strength of erection, the gel scored better overall largely due to being quick acting and with less side effects.
Regarding safety with partners it says that around 75% of the active ingredient has been absorbed from the glans penis within 5 minutes, with none remaining by 10 minutes and as a result there should be very little exposure to the partner via vaginal mucous membranes, assuming a ten minute delay prior to penetration. Obviously condom use would reduce that considerably further. Only four cases of partner adverse effects in the trials.
I cannot find anything about how often the gel is recommended for use? In the trial participants had to leave a one week gap, but that is mainly to ensure there is zero chance of any remaining residual effects.
In terms of punting and given this 5 to10 minute onset, the only way I can see this working is if the gel is applied during the booking and therefore with the knowledge and consent of the SP. It is undoubtedly more suited to couples in relationships and where ED is an issue?
Very much a case of wait and see when opened up to a wider market which appears is now in sight in the UK. I shall follow with interest.