Just did my first clenviscerate tonight, did two days of just eviscerate to assess tolerance. Feels the same, the burn is intense. The one thing I notice is I do feel slightly (and I mean slight) light headedness, which i didn't feel on the eviscerate alone. I only mixed 20mg of clen with two pumps of eviscerate.
Also wanted to mention one thing that wasn't in the article is the option of getting a 1ml oral syringe. I'm sure the regular syringe works great too but I find the 1ml oral is really divided up well for best guestimating the amount of clen you are taking.
With most liquid clen its 200mg/mL so .5mL is 100mg, .25mL is 50mg and .125mL is 25mg. Not only does my oral syringe have a marking for .125mL but it also came with a rubber stop top that plugs the bottle and you can stick the oral syringe in it and hold the bottle upside down for easy measuring of the product. I really like the oral syringe.
This stuff is great!