Depo-Testosterone (TC) and Delatestryl (TE) are the 2 most common esters used in men on trt.
Both use different carrier oils/excipients and both esters are injected IM let alone strictly sub-q.
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Bad enough that there are still some that think testosterone needs to be injected strictly IM.
Now different mixes (carriers oils/excipients) are needed.....lol!
*Regarding big pharma, generic or compounded injectable T there is no secret recipe as they are all manufactured with:
* an esterified T (prodrug) whether (propionate/enanthate/cypionate/undecanoate or mixed esters)
* a carrier oil (vehiculum) such as (sesame, cottonseed, castor, peanut, grapeseed)
* an excipient such as:
Benzyl Alcohol
• Solubility enhancer
• Oil viscosity reducer
• Local anesthetic
• Preservative
Benzyl Benzoate
• Solubility enhancer
• Solvent
Ethanol
• Solvent
Chlorobutanol
• Preservative