Kolto Infusion

WARNING!

IF TACTICAL ADVANTAGE EXPIRES BEFORE THE ABILITY COMPLETES CAST, IT IS INTERRUPTED AND NO HEALING GOES THROUGH!

That being said, I wish BioWare either lets it cast through, or doesn't let us cast it at all if TA is going to expire before it completes.

A usual strategy I do while healing is I try to always keep at least one stack of TA for Medical Consult's healing buff, and Infusion rather than Injection when I only have one stack.

Things get more complex with Medical Engineering's ICD and Surgical Precision, but pre-25, that's the plan.

kolto infusion is worthless! read what moaradin put. tactical advantage should only be consumed for using either surgical probe, or stim boost.

I'm at level 50 and this is what my abilities base heals and costs are at as an operative healer.
Kolto injection base heal: 2171 - 2471, cost: 25 energy
Kolto infusion base heal: 1868 - 2169, cost: 20 energy
Surgical Probe base heal: 802 - 1036, cost: 0 energy

When above 60% energy, you gain 5 energy per second. You ALWAYS want to stay above 60% energy to have constant heals and the best way to do this is by spacing out all your heals with Surgical Probe. If talented, Kolto injection has a 100% chance to grant a tactical advantage, so you can always throw a Surgical Probe afterwards. Even though Kolto injection costs 5 energy more than infusion, throwing a surgical probe right afterwards will trigger a global cooldown which lasts 1.5 seconds long. If you are above 60% energy 1.5 seconds is enough time to regain 7.25 energy, so spending the extra 5 energy for kolto injection is worth the energy cost while healing a lot more as well.

The only thing i see kolto infusion becoming useful for is when you get the tier set granting it 15% more crit chance. But even with that IT STILL SUCKS!