Well, both are effective at giving the appropriate weight loss results. Equally, there are pros and cons associated with both these forms of HCG. But still, HCG injections are more expensive and hard to take, when compared to the HCG drops. While HCG drops are taken sublingually or underneath the tongue So, it is easy to absorb. Moreover, they are less expensive than HCG injections, which makes them appealing to the dieters.