Higher Dose Viagra = Less Effective?

[Thanksgiving]

Now this could be related to other factors obviously.

But I've noticed that sometimes taking a higher dose of Viagra is worse in terms of erections than taking a lower dose.

It's almost like there's a parabola for sweet spot.

Not enough = not as hard
Sweet spot = very hard
Too high of dose = not as hard

Has anyone else noticed this?

[Scope75]

Yes but since I don't need it there's no to little but to much almost seems like I have ED problems.
There has to be a dose of diminishing results where you just get sides and no wood.