Preparations of follicle-stimulating hormone (FSH) mainly include those derived from the urine of menopausal women, as well as recombinant preparations. The recombinant preparations are more pure and more easily administered, but they are more expensive. The urinary preparations are equally effective and less expensive, but are not as convenient to administer as they are available in vials versus injection pens. One study reported that users of the purified urinary FSH preparation Bravelle experienced less injection site pain compared to the recombinant preparation Follistim. 
Most will find they will buy injectable steroids far more often than oral forms or any other form for that matter and most who do will find their cycles to be far more worthwhile than those who do not. Many who are unfamiliar with anabolic steroid use are often afraid of injectable forms; after all, sticking yourself with a needle does not sound too appealing. Even so, most will find the procedure to be fairly simple and generally painless and more often than not prior fear is laughed at once it’s discovered that the process truly is no big deal at all.