I have high bp, tachycardia, daily take Effexor (venlafaxine) XR, soma, ultram, zonegran, methergine, metoprolol tar, elavil, neurontin. What OTC cold med can I take?

None. I would not recommend any further medication, since the chance for adverse drug interactions is high. You are are already taking several medications that act on the serotonin system and may result in adverse interaction.