The black box warning on the . FDA-approved ciprofloxacin label warns of an increased risk of tendinitis and tendon rupture, especially in people who are older than 60 years, people who also use corticosteroids, and people with kidney, lung, or heart transplants. Tendon rupture can occur during therapy or even months after discontinuation of the drug.  A case control study  performed using a UK medical care database found that fluoroquinolone use was associated with a -fold increase in tendon problems. The relative risk increased to in those over 60 years of age and to in those over the age of 60 who were also taking corticosteroids. Among the 46,766 quinolone users in the study, 38 (%) cases of Achilles tendon rupture were identified. A study performed using an Italian healthcare database reached qualitatively similar conclusions. 
The side effects of Trenbolone do include those of an androgenic nature, which isn’t surprising when this steroid’s androgenicity is so greatly pronounced. The androgenic side effects of Trenbolone are highly dependent on genetics and can include acne in sensitive individuals, accelerated hair loss in those predisposed to male pattern baldness and body hair growth. If you are not predisposed to male pattern baldness there is no risk of hair loss, but Trenbolone is notorious for promoting hair loss in those who are predisposed. Keep in mind, you were going to lose your hair anyway, but the use of Trenbolone may speed it up. Acne is largely the same; only those who are sensitive are at risk; many men can easily use Trenbolone without issue.
Using the procedure of Example 1, g of monohydrated cupric acetate and g of 9β, 11β-epoxy-Δ1,4,16(17) -pregnatriene-3,20-dione in 10 ml of tetrahydrofuran were reacted. Then, ml of a 3M solution of methyl magnesium chloride in tetrahydro- furan, 8 ml of a phosphoric acid sodium hydroxide and ml of hydrogen peroxide were reacted. The peracid was prepared as in Example 1 from g of phthalic anhydride. After purification by chromatography on silica, eluting with a methylene chloride-ethyl-ether mixture (7-3), g of the expected product were obtained.