What DSIP Is
DSIP is delta sleep-inducing peptide, studied for slow-wave sleep. It is taken as a subcutaneous injection 30 to 60 minutes before bed, and most people notice it in nights to two weeks; some people do not respond.
What Semax / Selank Is
Semax / Selank is two peptides from Russian research: semax for cognition, selank for anxiety. It is taken as a nasal spray or injection, daily or as needed, and most people notice it in same day.
Side by Side
| DSIP | Semax / Selank | |
|---|---|---|
| Best for | deeper sleep | focus and calm |
| How it is taken | subcutaneous injection 30 to 60 minutes before bed | nasal spray or injection, daily or as needed |
| Time to notice | nights to two weeks; some people do not respond | same day |
| Price at Zen IV Spa | $229/mo | $299/mo |
| Common side effects | grogginess the first few nights | rare irritation; not a stimulant |
| FDA status | not FDA-approved; compounded by prescription | not FDA-approved in the US; compounded by prescription |
Pick DSIP If
Your main concern is broken or shallow sleep when melatonin has not helped. It is the right call when the goal is deeper sleep and you want the simpler, more targeted option.
Pick Semax / Selank If
Your main concern is clear-headed focus without caffeine jitters. It is the right call when the goal is focus and calm.
Can You Combine Them?
Yes, at opposite ends of the day: Semax/Selank for daytime focus and calm, DSIP at bedtime for sleep.
How to Get Either One in New York or New Jersey
Every program at Zen IV Spa is prescribed and overseen by our medical director, a licensed physician, after a video consultation and baseline labs drawn at your home. Refills ship overnight anywhere in New York or New Jersey, and a nurse can come to your door for the first dose.
Single peptides are $229 a month (glutathione $199), stacks $299, semaglutide $199, tirzepatide $299. A 2-month supply is 10% off and 3 months is 15% off. The $50 consultation is one-time.
Common Questions
Which is better, DSIP or Semax / Selank?+
Neither is better in general. DSIP for deeper sleep; Semax / Selank for focus and calm. The provider chooses from your labs and goals.
Which costs more?+
DSIP is $229/mo; Semax / Selank is $299/mo at Zen IV Spa, shipping and follow-ups included.
Are they FDA-approved?+
DSIP: not FDA-approved; compounded by prescription. Semax / Selank: not FDA-approved in the US; compounded by prescription. We say so plainly on every page.
Can I switch from one to the other?+
Yes. Programs run month to month with no contract; the provider adjusts at any check-in.
How do I start?+
Book a $50 video consultation at Zen IV Spa; a nurse draws baseline labs at your home.
All treatments are medical services. Every guest is screened, and every treatment is provided only under the clearance, prescription or standing protocol of a licensed medical provider. Compounded peptides are not FDA-approved unless stated. Nothing on this page is a diagnosis or a promise of results.