Yes there is a difference but not a huge one. Test Cyp has a 12 day half life where as Test E has a 10 day the reason for this is because Test C has an extra carbon atom attached to it making it weigh ever so slightly more. Some users have reported slightly extra water retention as a result with C as opposed to E. no clue as to why most choose E over C they are both equally as effective and provide pretty much the same result. Test Cyp seems to be used by more doctors for TRT patients for some reason...I have 3 relatives receiving TRT now all are on Test Cyp. One difference I have seen is Test Cyp comes in 200mg per ml form where as you never see Test E below 250mg per ml no clue why that is but that is just something I have noticed although I have seen some Test blends containing 200/200 of both Test E/C so there ya go
More specifically, the methylcobalamin form of B12 is recommended, as it has been shown to be the most effective. Taking B12 gives you a huge boost of energy while training, and more importantly, greatly helps your recovery.
Beginners are recommended a dose of testosterone enanthate in the range of 300-500 mg per week. Even at the lowest dose range the substance provides a dramatic improvement for beginners, for the figure ad strength, provided nutrition and training are properly adjusted and strict. Intermediate users dosed testosterone cypionate in the range of 500-700 mg per week. Advanced users use the amount in the range of 700 - 1000 mg per week. To maintain a stable plasma testosterone levels, it's advised to use testosterone cypionate at least 2 times a week in regular intervals. TESTEX PRO-250 is detectable in urine for 120 days.