Rhodiola = MAO / COMT inhibition plus amps up beta-endorphin and suppresses cortisol.
Ashwagandha = GABA mimetic and AcHE inhibitor
Grape Seed Extract = NOS Booster and possibly mild aromatase inhibiton. Also may inhibit histamine.
ALCAR = BDNF Booster, Serotonin modulator and acetyl donor.
Pycnogenol = primary effects on NOS and free radicals.
Conclusions: Hard to be sure but it might too much noradrenaline and serotonin from all the MAO / COMT Inhibition as well as ALCAR.
ALCAR raises noradrenaline, acetylcholine and serotonin, with minor effects on dopamine. It does have potent effects on BDNF and other nerve growth factors though.
What standardization of Rhodiola are you taking?
This combination generally should be very beneficial upon sexual arousal and libido.
The only thing I can think of is as I said - too much serotonin/noradrenaline results.
Try adding folate,b12,L-histidine and L-citrulline.