HCG produces little or no tissue-reaction, it is completely painless and in the many thousands of injections we have given we have never seen an inflammatory or suppurative reaction at the site of the injection.
One should avoid leaving a vacuum in the bottle after preparing the solution or after withdrawal of the amount required for the injections as otherwise alcohol used for sterilizing a frequently perforated rubber cap might be drawn into the solution. When sharp needles are used, it sometimes happens that a little bit of rubber is punched out of the rubber cap and can be seen as a small black speck floating in the solution. As these bits of rubber are heavier than the solution they rapidly settle out, and it is thus easy to avoid drawing them into the syringe.
We use very fine needles that are two inches long and inject deep intragluteally in the outer upper quadrant of the buttocks. The injection should if possible not be given into the superficial fat layers, which in very obese patients must be compressed so as to enable the needle to reach the muscle. Obviously needles and syringes must be carefully washed, sterilized and handled aseptically.8 It is also important that the daily injection should be given at intervals as close to 24 hours as possible. Any attempt to economize in time by giving larger doses at longer intervals is doomed to produce less satisfactory results.
There are hardly any contraindications to the HCG method. Treatment can be continued in the presence of abscesses, suppuration, large infected wounds and major fractures. Surgery and general anesthesia are no reason to stop and we have given treatment during a severe attack of malaria. Acne or boils are no contraindication; the former usually clears up, and furunculosis comes to an end. Thrombophlebitis is no contraindication, and we have treated several obese patients with HCG and the 500-Calorie diet while suffering from this condition. Our impression has been that in obese patients the phlebitis does rather better and certainly no worse than under the usual treatment alone. This also applies to patients suffering from varicose ulcers which tend to heal rapidly.
Source: Pounds and Inches by Dr. Simeons