A big Thank you goes to James M. for bringing this subject to my attention and for providing a text copy of the injection leaflet. When injecting steroids, whether water or oil based, they must be taken intramuscularly, i.e. the injection must penetrate the skin and surface fat and enter the muscle. The most common area to inject into is the upper outer quarter of the buttock. Injections can also be placed into the outer thigh. Intramuscular injections should be given deep within the muscle and away from major nerves and blood vessels.
Some solutions can be harder to inject than others, causing the needle to block sometimes.
Shake the solution vigorously before drawing into the syringe to avoid blocking. Needles shorter than 1 inch are not recommended. The injection site should be cleaned with an alcohol swab. Always use a new syringe and a new needle. To clear the syringe of air slowly squeeze the plunger, needle pointed up, until the air bubbles near the top are pushed out.