The downside of a long acting ester like Cypionate is that it can lead to more water retention (although this can be somewhat alleviated by ensuring adequate water consumption and keeping a check on your intake of carbohydrates). Testosterone is also metabolized in the body to the female hormone estrogen by the aromatize enzyme. This can result in gynecomastia (the growth of breast tissue in men) some fat gain, testicular shrinkage and an increase in blood pressure. Hair loss and possible swelling of the prostate are also potential side effects.
Since Pronorm 100 is indeed simply another form of injectable testosterone, the side effects associated with it are for the most part those commonly encountered with any type of testoserone compound. For more specific information about these, including those that may effect women.
Far more than the other testosterone esters, for the possible exception of Sustanon, users of Pronorm 100 will often complain of injection site irratation and swelling. Some individuals find that the reaction that they experience with the ester is so bad in fact that they will have to cease administration of the compound. As well, due to the frequent injections of the compound and the possibility of injection site irritation, it is advisible that users rotate injection sites as frequently as possible so that no complications arise.
Some users also anecdotally report that they are much more likely to experience low grade fevers when using Pronorm 100 in comparison to other testosterone compounds. This symptom will usually only persist for a few days to a week or more, but can sometimes last far longer.
As should be expected with an ester such as Propionate, suppression of endogenous testosterone production will occur quite soon after the intial administration of the drug. The usual protocal of post-cycle therapy and possibly the use of human chorionic gonadotropin during the cycle should be followed, but no special considerations need to be taken into account because of this.