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Do you dose Epicatchetin far away from workouts?

Madevilz

Member
Epicatchetin is said to inhibit exercise adaptation. Before I knew about it, I always took it preworkout for the pumps, but seems like this is a bad idea. What's your take on it?

Im not too good in interpretating studies so i asked ChatGPT.


1. Cardiovascular Adaptation

Evidence: Some studies (especially in rodents and early human trials) show epicatechin may blunt mitochondrial biogenesis if taken around endurance exercise.

Mechanism: It may reduce ROS (reactive oxygen species) signaling, which is essential for adaptations like increased VO2 max, capillary density, and mitochondrial efficiency.

Conclusion: Yes, epicatechin can potentially blunt endurance training adaptations, particularly if taken immediately before or after cardio.



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2. Muscle Hypertrophy

This is more nuanced:

Potential Positives

Myostatin inhibition: Epicatechin lowers myostatin, which removes a brake on muscle growth.

Increased follistatin: This promotes muscle differentiation and growth.

Improved blood flow: Via increased nitric oxide, which helps nutrient delivery and pump.


Potential Negatives

Blunting exercise-induced ROS: Similar to high-dose antioxidants (like quercetin or vitamin C), epicatechin might reduce ROS signaling needed for hypertrophy, if taken right around the workout.


Current Consensus (2024–2025 literature)

Epicatechin seems to promote hypertrophy if timed away from the workout window.

When used smartly (e.g., 6+ hours apart from training), it doesn't blunt hypertrophic signaling and may actually enhance it over time.



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Summary

Goal Effect of Epicatechin Best Timing

Endurance/Cardio Adaptation May blunt adaptation Take away from cardio (6+ hrs)
Muscle Hypertrophy May enhance growth, if timed well Take morning or night, not pre/post workout
Performance (Pump, Blood Flow) Enhances OK to use pre-workout if not chasing maximal adaptation
 
I have always taken at least one dose pre-workout.

ChatGPT is a good tool for some things but it gets a LOT wrong on supplements.
 
sns8778 said:
I have always taken at least one dose pre-workout.

ChatGPT is a good tool for some things but it gets a LOT wrong on supplements.
Click to expand...

Those statement are based on real studies though.

Sorry couldnt copy the hyperlinks:



1. (−)-Epicatechin Supplementation Inhibits Aerobic Adaptations to Cycling Exercise in Humans

Summary: This study found that four weeks of (−)-epicatechin supplementation (200 mg/day) in conjunction with cycling exercise did not enhance, and may have inhibited, improvements in aerobic capacity and mitochondrial enzyme activity (specifically succinate dehydrogenase) compared to placebo.

Implication: Suggests that (−)-epicatechin may blunt certain aerobic training adaptations.

Source:



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2. Do Antioxidant Supplements Interfere with Skeletal Muscle Adaptation to Exercise Training?

Summary: This review discusses how antioxidant supplementation can attenuate beneficial exercise-induced adaptations, including mitochondrial biogenesis and insulin sensitivity, by interfering with reactive oxygen species (ROS) signaling pathways.

Implication: Highlights the potential for antioxidants to blunt training adaptations, which may extend to compounds like (−)-epicatechin.

Source:



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3. Oxidants, Antioxidants, and the Beneficial Roles of Exercise-Induced Production of Reactive Species

Summary: This article emphasizes the dual role of ROS in exercise, noting that while excessive ROS can be damaging, physiological levels are crucial for signaling pathways that promote adaptations like mitochondrial biogenesis and muscle hypertrophy.

Implication: Suggests that excessive antioxidant intake may disrupt these beneficial signaling processes.

Source:



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4. Antioxidant Supplementation During Exercise Training: Beneficial or Detrimental?

Summary: This review presents evidence that high doses of antioxidant supplements can interfere with exercise-induced adaptations by blunting ROS-mediated signaling necessary for improvements in muscle function and performance.

Implication: Reinforces the idea that antioxidant supplementation, depending on timing and dosage, may hinder training benefits.

Source:



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5. Supplemental Antioxidants and Adaptation to Physical Training

Summary: This book chapter discusses how antioxidant supplementation can impair training-induced adaptations, including mitochondrial biogenesis and endurance performance, by disrupting ROS signaling.

Implication: Further supports the notion that antioxidants may negatively impact exercise adaptations.

Source:



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Note: While (−)-epicatechin has been shown to have beneficial effects on muscle growth and vascular function, these studies suggest that its antioxidant properties, particularly when consumed in high doses or around exercise sessions, may interfere with the body's natural adaptive responses to training. It's essential to consider timing and dosage to maximize benefits and minimize potential drawbacks.
 
Digger a bit deeper, asking ChatGPT if those studies really applies to epicatchetin since most are on antioxidants and no epicatchetin specifically. Having fun chatting with a bot lol


We cannot say for sure that (−)-epicatechin blunts muscle hypertrophy in the same way high-dose general antioxidants (like vitamin C or E) do. Most of the evidence against antioxidant supplementation blunting adaptation is based on broad-spectrum, high-dosage antioxidant use, not flavanols like epicatechin specifically.


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What Makes Epicatechin Unique?

1. It's a Selective Antioxidant

Epicatechin does have antioxidant properties, but it doesn’t massively suppress ROS like synthetic vitamins.

It actually modulates ROS and enhances endogenous antioxidant systems (e.g., Nrf2) rather than quenching ROS indiscriminately.


2. It's a Flavonoid, Not a Classic Antioxidant

Unlike vitamin C or E, flavonoids like epicatechin act more as signaling modulators than blunt antioxidants.

They often exhibit hormetic effects — mild stressor effects that trigger adaptive responses, not suppression.


3. Human Data Is Limited but Suggestive

The PMID: 30593659 study (2019, from the PMC article linked earlier) showed impaired aerobic adaptations, but did not measure hypertrophy or strength outcomes.

It’s plausible that mitochondrial adaptations (relevant to endurance) are more sensitive to ROS blunting than muscle hypertrophy pathways like mTOR activation.



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Conclusion:

No, there's no conclusive evidence that epicatechin blunts muscle hypertrophy.

The concern about antioxidants blunting adaptation mostly comes from vitamin C, E, and polyphenol megadoses, not from moderate-dose, flavonoid-type compounds like epicatechin.

That said, since some evidence suggests mitochondrial adaptation to endurance training might be blunted, it’s cautious but not necessary to avoid epicatechin around endurance/cardio workouts.



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Recommendation:

Use timing to hedge your bets:

For hypertrophy: Continue using epicatechin, but take it at least 3–6 hours away from resistance training, especially if stacking with other antioxidants (e.g., quercetin).

For cardio performance: Consider using it on non-cardio days, or away from training.
 
ChatGPT lumps a lot of things together and makes a lot of mistakes.

Example - it thinks that Sabinsa's Curcousin is Sabinsa's C3 Curcumin - so any information it gives out on Curcousin is completely wrong. It's a good overview, but have to look a lot deeper to get real info.

You wound up saying basically what my thought was - that it is lumping it in with other antioxidants - and even that is debatable on whether antioxidant timing impacts performance to any notable degree.

Also note that its talking about cardiovascular endurance - I've noticed Epi-Plex has a great impact on my muscular endurance, but it wouldn't be my go to for cardiovascular endurance anyway; ReV02 would be.

With Epi-Plex, I notice good muscular endurance and good pumps and fullness and that is the very common feedback on it and I've always taken a dose before working out.
 
I double dosed CEL Epi-Plex for many months pre-workout and didn't feel like it hurt my progress in the slightest

I take a huge amount of anti-inflammatories and antioxidants in general throughout the day year round
 
sns8778 said:
ChatGPT lumps a lot of things together and makes a lot of mistakes.

Example - it thinks that Sabinsa's Curcousin is Sabinsa's C3 Curcumin - so any information it gives out on Curcousin is completely wrong. It's a good overview, but have to look a lot deeper to get real info.
Click to expand...

I haven't messed around much with ChatGPT... but so far Grok has been decent at churning out some basic supp info.

using Curcousin for example:
CurCousin is a branded nutritional ingredient developed by Sabinsa Corporation, containing 99% pure Calebin-A, a curcumin analog naturally found in trace amounts in Curcuma longa (turmeric) and Curcuma caesia (black turmeric). Due to its low natural occurrence (less than 0.001% of curcuminoids in turmeric), Calebin-A is synthetically produced to ensure sustainability and purity. It has self-affirmed GRAS (Generally Recognized as Safe) status and is backed by 65 U.S. and international patents.
Health Benefits
Clinical and preclinical studies highlight CurCousin's potential in supporting metabolic health and other physiological functions, including:
  • Weight Management: Inhibits adipogenesis (fat cell formation) and promotes thermogenesis, reducing body weight and lipid accumulation. A 90-day clinical trial with 40 overweight or obese individuals showed significant reductions in body weight and BMI with a 25 mg twice-daily dose. It also modulates adipokines, increasing adiponectin (promotes fat burning) and reducing leptin (linked to appetite), enhancing satiety.
  • Metabolic Health: Supports balanced cholesterol (increases HDL, reduces LDL), healthy blood sugar levels, and improved circulation. It activates AMPK, a key enzyme in energy metabolism, aiding in metabolic syndrome management.
  • Liver Health: Reduces fat accumulation in the liver, potentially alleviating non-alcoholic fatty liver disease (hepatic steatosis).
  • Joint and Bone Health: Exhibits anti-inflammatory properties, reducing paw edema in arthritis models and suppressing osteoclastogenesis (bone degradation) via inhibition of the NF-kB pathway, which may benefit conditions like arthritis and osteoporosis.
  • Anti-Inflammatory and Antioxidant Effects: Inhibits pro-inflammatory cytokines (e.g., TNF-α, IL-6, IL-1β) and combats oxidative stress, potentially promoting longevity and reducing inflammation-related conditions.
  • Microbiota Modulation: Increases beneficial gut bacteria like Akkermansia, supporting healthy body weight and gut health.
  • Cellular Health: Shows potential in protecting articular cartilage and inhibiting cancer cell growth in preclinical studies, though these claims require further research.
Mechanism of Action
CurCousin’s effects are driven by Calebin-A’s stability in physiological and acidic/basic environments compared to curcumin. It modulates key pathways, including:
  • AMPK Activation: Enhances energy metabolism and fat burning.
  • Adipokine Regulation: Balances adiponectin and leptin levels.
  • NF-kB Inhibition: Reduces inflammation and osteoclast activity.
  • Thermogenesis: Increases heat production to support weight loss.
Dosage and Usage
The recommended dosage is 25 mg twice daily, typically taken after meals. Some formulations include BioPerine® (a piperine extract) to enhance bioavailability. It’s advised to consult a healthcare professional before use, especially for those on medications, as CurCousin may interact with certain drugs.
Safety and Considerations
  • CurCousin is well-tolerated, with no significant side effects reported in clinical trials.
  • Statements about its benefits have not been evaluated by the FDA, and it is not intended to diagnose, treat, cure, or prevent diseases.
  • Individuals with hypersensitivity should avoid use, and it’s recommended to store the product at 15–30°C, protected from light and moisture.
Availability
CurCousin is available as a dietary supplement in capsule form (e.g., 25 mg or 50 mg doses) through various retailers and pharmacies, often marketed for weight management, metabolic health, and joint support. Prices vary, with some sources listing 60 capsules at around $79.90–$159.90.
Limitations
While promising, much of the research is preclinical or based on small-scale human studies. Larger, independent trials are needed to confirm efficacy. Additionally, claims about cancer prevention or cognitive benefits are preliminary and require further validation. Always consult a healthcare provider for personalized advice.
For more details, visit Sabinsa’s official site or consult peer-reviewed studies like those published in the International Journal of Ayurveda and Pharma Research.


And just FWIW, here's what Grok spit out when asked about epi and workout timing: ...

it's too long to post in here haha

 
baldwanus said:
I haven't messed around much with ChatGPT... but so far Grok has been decent at churning out some basic supp info.
Click to expand...
Both are great and I use them daily. I've found Grok to be faster for image generation and editing. I like Grok just cause I like Elon. :ROFLMAO:
 
I been gaining muscle while I was on epicatechin, so actually I don’t think is any supplement in the market which reduces the chance of gaining muscle at all.
 
I had pretty surprising results from epicatechin and I dosed it pre workout and mid day. I did feel like I got some extra pumps preworkout. Interesting stuff about dosing time though.
 
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