---
product_id: 4115189
title: "Seriphos - Phosphorylated Serine Adaptogen - Cortisol Supplement - Helps Cognitive Function, Gluten Free, Dairy Free, Soy Free - 100 Capsules"
brand: "interplexus"
price: "€ 75.90"
currency: EUR
in_stock: true
reviews_count: 5
category: "Inter Plexus"
url: https://www.desertcart.hr/products/4115189-seriphos-phosphorylated-serine-adaptogen-cortisol-supplement-helps-cognitive-function-gluten
store_origin: HR
region: Croatia
---

# Supports balanced cortisol levels for stress resilience Gluten, dairy, soy & allergen-free clean formula 100mg Phosphorylated Serine per capsule Seriphos - Phosphorylated Serine Adaptogen - Cortisol Supplement - Helps Cognitive Function, Gluten Free, Dairy Free, Soy Free - 100 Capsules

**Brand:** interplexus
**Price:** € 75.90
**Availability:** ✅ In Stock

## Summary

> 🧬 Unlock your brain’s stress-proof superpower with Seriphos!

## Quick Answers

- **What is this?** Seriphos - Phosphorylated Serine Adaptogen - Cortisol Supplement - Helps Cognitive Function, Gluten Free, Dairy Free, Soy Free - 100 Capsules by interplexus
- **How much does it cost?** € 75.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/4115189-seriphos-phosphorylated-serine-adaptogen-cortisol-supplement-helps-cognitive-function-gluten)

## Best For

- interplexus enthusiasts

## Why This Product

- Trusted interplexus brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Nighttime Reset Ritual:** Non-drowsy support that helps normalize sleep cycles, so you wake up refreshed and ready.
- • **Cognitive Clarity Boost:** Ethanolamine-powered cellular support to keep your mind sharp and mood balanced under pressure.
- • **Trusted by Professionals:** Backed by 848+ reviews with a 4.4-star rating—join the community optimizing their adrenal health.
- • **Clean & Conscious Formula:** Free from gluten, dairy, soy, and common allergens—because your wellness deserves purity.
- • **Stress Mastery in a Capsule:** Clinically designed to maintain healthy cortisol rhythms, helping you own your day without burnout.

## Overview

Seriphos by InterPlexus is a premium phosphorylated serine supplement formulated to support healthy cortisol levels, promote cognitive function, and maintain a balanced mood. With 100 vegetarian capsules per bottle, it offers a clean, allergen-free formula ideal for adults seeking natural adaptogen support to manage stress and improve sleep quality.

## Description

Phosphorylated Serine/Ethanolamine Other Ingredients: Cellulose, vegetarian capsule shell (hypromellose, water)Seriphos for Adaptogen and Adrenal Support by InterPlexus, 100 capsu

Review: Helps so much - I've used this supplement for many years. When I was having issues with my adrenal gland, my doctor recommended I start taking this every night. My cortisol had been peaking at noon instead of a 8am and this is the ONLY thing that helped me get back to sleeping more normal and waking up at a normal time in the morning. These have no aftertaste, are decently sized but not too hard to swallow (in my opinion) and the shipping is always quick. The value is great considering it actually helps. It took me a few months of taking this to get lasting results but I still take some every night and it really does help keep my cortisol levels balanced.
Review: Great buy - Love this supplement for sleep. Non drowsy

## Features

- MAINTAINS A HEALTHY STRESS RESPONSE - Seriphos contains key nutrients that help maintain healthy cortisol (the stress hormone) levels. *
- SUPPORTS HEALTHY CORTISOL LEVELS - Seriphos is formulated using phosphorylated serine which can improve your adaptability to unhealthy stress, support a normal mood, and encourage healthy cognitive function. *
- ENCOURAGES HEALTHY COGNITIVE FUNCTION - The ethanolamine contained in Seriphos serve as biological building blocks used by the cell to increase cellular health and promote cellular transmission maintaining healthy cognitive function.*
- PROMOTES A HEALTHY MOOD - The Phosphatidylserine produces by the body as a result of Seriphos supplementation may help maintain a healthy mood.*
- *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B00747NHTI |
| Best Sellers Rank | #42,199 in Health & Household ( See Top 100 in Health & Household ) #1,683 in Blended Vitamin & Mineral Supplements |
| Customer Reviews | 4.4 4.4 out of 5 stars (848) |
| Date First Available  | February 1, 2012 |
| Is Discontinued By Manufacturer  | No |
| Manufacturer  | InterPlexus |
| Package Dimensions  | 4.29 x 2.2 x 2.17 inches; 4.8 ounces |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** InterPlexus
- **Diet Type:** Gluten Free, Vegetarian
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Item Weight:** 4.8 ounces
- **Package Information:** Bottle
- **Primary Supplement Type:** Phyosphorylated Serine
- **Product Benefits:** Brain Health Support
- **Unit Count:** 100.0 Count

## Images

![Seriphos - Phosphorylated Serine Adaptogen - Cortisol Supplement - Helps Cognitive Function, Gluten Free, Dairy Free, Soy Free - 100 Capsules - Image 1](https://m.media-amazon.com/images/I/41Mn8KVaWzL.jpg)

## Questions & Answers

**Q: Does this product contain soy?**
A: No is does not contain soy.

**Q: Has anyone bought this after December 2016 that can post the ingredients? They are supposed to bring the original formula back now.**
A: The new (old) Seriphos is out and selling: SeriphosÂ®Supports a healthy and balanced stress response*ORIGINAL FORMULAwith Phosphorylated Serine.Seriphos is an adaptogen and adrenal support formula that contains key nutrients for stress resiliency including phosphoserine, magnesium, calcium and phosphorus. This formula assists in balancing cortisol when levels are elevated due to acute or chronic stress.* 100 Capsules

**Q: Is this the new old formula or the old new formula? I want the one with the 1000 mg of the product that worked.**
A: Currently the Seriphos being sold is the new formula.  However, I got an email from InterPlexus on Dec. 19th (2016) that said management had decided to go back to the old formula due to high customer demand.  The old formula was suppose to be available again by the end of 2016.  Hope this helps!

**Q: How many capsules make 1000mg?**
A: The product description says the serving size of 1 capsule contains 1000 mg.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Helps so much
*by R***W on January 6, 2026*

I've used this supplement for many years. When I was having issues with my adrenal gland, my doctor recommended I start taking this every night. My cortisol had been peaking at noon instead of a 8am and this is the ONLY thing that helped me get back to sleeping more normal and waking up at a normal time in the morning. These have no aftertaste, are decently sized but not too hard to swallow (in my opinion) and the shipping is always quick. The value is great considering it actually helps. It took me a few months of taking this to get lasting results but I still take some every night and it really does help keep my cortisol levels balanced.

### ⭐⭐⭐⭐⭐ Great buy
*by L***D on December 12, 2025*

Love this supplement for sleep. Non drowsy

### ⭐⭐⭐⭐⭐ Works as advertised. Original Formula. (long).
*by F***K on March 27, 2017*

65 years old, good health, man, I have had the typical middle-insomnia problem for about 10 years. I oscillated between resigning to it as an "old man thing" and trying to fight it off with different types of products, OTC sleep-aids, melatonin but stayed off Rx because of the cycle of dependence I have seen developing in people who used it regularly. I stayed off of psychotropics such as Trazodone as well for the same reasons. I struggled to understand whether this was depression or anxiety and finally settled for high/dysfunctional cortisol levels due to chronic stress (e.g. parents getting old and dependent, buying a large house, other life issues). Since I can't change my life to remove the stress, I looked around for cortisol agonists and found Seriphos. I noticed a change starting the first night with one capsule. The effect was not magical (i.e. full night of restful sleep) but did make a difference in that my awakenings were shorter and the depressive thoughts that invariably came with it (i.e. "negative auto-brooding") took a superficial tone and evaporated rapidly. I also noticed that my dreams, for the first couple of weeks at least, were less intense but much longer and wide-ranging. This was very surprising to me: it felt like I was catching up with dream-work somehow . I am now over 1 month into it and the 2/3 am awakening has become very variable and very brief. I wake up fully rested even if some nights, I have the feeling of not sleeping very smoothly. Gradually, I came to trust the effect, which probably reinforces it. Zero side-effects for me. Depending on one's metabolism, there will be some trial and error as to when to take it. I take it at around 9. The catch is to have the effect kick in at or just before the usual awakening time. This product does work and there is a simple, clear and logical explanation of why it does so that the placebo effect cannot account entirely for its efficacy. I reached the point where I am planning how to discontinue. I decided for 6 weeks of use. The hope, of course, is that the effect will continue, although, since the cortisol hypothesis has been confirmed in my case, chronic stress will likely take over eventually (until I change my life!). It will be interesting to see how long it takes and if there are any other changes.

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-21*