As my limited understanding of peptides in general is evolving from the deepness of the rabbit holes presented, I’m starting to look at some peptides like “vitamins”, not that they are vitamins but that we can use some of them in a similar manner.
For example as we age, we don’t process B6 from our dietary intake as when we were young. We have not become “desensitized” to B6, the system that processes it is impaired so we supplement B6.
Similar to reductions in our body’s ability to process (or make) a wide variety of the 7,000 peptides we produce to be healthy.
For example MOTS-c production declines as we age, we are not becoming desensitized, we are just making less. By “supplementing” MOTS-c we may be able to compensate for the reduced production as we age.
In my limited understanding, it appears that many of the bio-identical and some of the fragment type peptides available today may be seen/used the same as supplementing with dietary supplements.
Some peptides that have been created outside the human body, for specific therapeutic purposes, probably have long term and even short term issues outside their intended use.
Another example I’d refer to is HRT (hormone replacement therapy). When Test is used at a rational level, not much different than how a vitamin may be used, it is tremendously beneficial, and can be used for many years with no side effects. But when used at more extreme doses, it cause testicular atrophy and people will use other hormones/peptides to counter that. Similarly, vitamins at extreme doses can be toxic and harmful.
I don’t think we want to use the commonly available peptides as a “replacement” therapy, more like a supplement to help compensate for age related reductions in beneficial peptides.
This has guided my personal approach to peptide use, why I take certain peptides at specific times to mimic the hormonal circadian cycles.

As this concept has started to evolve in my mind, I now look to understand the circadian cycle of any peptide that I use. My latest is with Thymosin Alpha-1 and I’ve found that it tracks the testosterone cycle. It has a 2hr half-life.
Basically;
- cycle/timing
- half-life
- contraindications
Those 3 should lead to a rational dose
Took my first dose of 250mcg of TA-1 this morning.