DSIP — is it doing anything or am I fooling myself?

DSIP has bimodal responder pattern in my circle. About half the people who try it never get a clear effect. The other half swear by it but often not reliably. I'm in the unreliable camp.

Epithalon is much more reliable for me as a sleep tool. DSIP is a coinflip. I've essentially stopped running DSIP outside of jet lag.

The literature on DSIP is thin and the name is misleading — its delta-wave promotion in humans is poorly substantiated. The sedation you're feeling on good nights might be via a different mechanism than "inducing deeper sleep."

Clinical data on DSIP is stuck in the 80s. There's a reason no one kept developing it. I treat it as a possible placebo with occasional real sedation.

Fair all around. Might be that I'm paying for expensive placebo 2/3 nights and real sedation 1/3. Not a great hit rate.

For shift workers DSIP might be more useful than for normal circadian people — there's a niche use case of "I need to sleep at a weird time on short notice." For baseline sleep quality I don't think it competes with good sleep hygiene.

My wife is a nurse on rotating shifts. DSIP plus a dark room plus 0.3mg melatonin is her only tool that works when her shift flips. Individual piece isn't the peptide, it's the whole ritual.

Low dose exogenous melatonin (0.3mg not 5mg) is underrated. The 5mg tablets people buy are 10-20x what's needed for chronobiotic effect.

Going to try a 0.3mg sublingual stack with DSIP on travel nights only and drop daily DSIP. The travel use case is where it earned whatever credibility it has with me.