Bolo Xia wrote...
is there a bonus effect of bigger and longer lasting explosions?
if so, i hope priming last longer while waiting for that big explosion.
does it make my character look any bigger?
i would really like to impress my team mates about my size.
is there a cool down bonus?
hope i can do it again sooner.
if all these are part of the product then sign me up 
In most cases, yes! It all boils down to you and your inner potential. So far, it appears that only 2% of all patients have ever realized their full potential at some point in their lives, whether it be for a prolonged period of time or just for a split second, and that 2% were a percentage base of Justicars.
Most likely, you will not only experience bigger and longer lasting explosions, you will also experience multiple explosions. Now how's that for an added bon-us?
Unfortunately, it will not increase your physical size, as we are against drugs which enhance the physical body artificially. However, your biotic aura will most likely be bigger, brighter, and more vibrant than it ever has been, which could lead to the impression of a growth in size. You'll be the talk of your squad, that's for sure. Don't be afraid to spread the word

In almost all cases, there is a significant cool down bonus. People have been known to reprime within 0.92 seconds, depending on the power!
Now, just remember, it is easy to get excited and run off exploding everything you see for the first few weeks. Our patients' general well-being is of our utmost concern, which includes proper protection procedures. We are not here to criticize lifestyle, but we do encourage you to keep your barriers up.
Thank you for considering Biagra. Remember, you're not alone.