STUDresearch · Non-peptide
Omega-3 (EPA/DHA)
Also known as
fish oil · EPA · DHA · icosapent ethyl · Vascepa-class EPA · krill oil (adjacent) · algae oil · omega 3 · n-3 PUFA
Community talk. May be wrong. Not medical advice. Not a protocol. Not for human or animal use.
Non-peptide
Lots of talk
Systemic
Oral TG or ethyl-ester fish-oil softgels
Performance staples (biohacking overlap)
Systemic oral EPA/DHA — triglycerides are the lab, rancid burps are the complaint.
What people say
Omega-3 here means EPA/DHA, usually fish oil. Count EPA+DHA milligrams. Prescription icosapent ethyl is not a Costco 180/120 softgel.
Doses people talk about
A 1000 mg fish-oil label is not REDUCE-IT.
How it may feel
Hours are burps or nothing. Rancid-paint smell is a bad bottle. Labs, not a buzz, are the later clock.
Grocery label trap~180/120 mg/day
Typical 1000 mg “fish oil” label. Threads count the EPA+DHA line, not the oily mass.
Label-literate staple talk1–2 g/day
EPA+DHA when people actually read the Supplement Facts.
High-TG / REDUCE-IT class4 g/day
Icosapent ethyl (EPA) prescription outcome-trial identity. Not a drugstore conversion.
Half-life & effect duration
- Half-life in the body
- Fish oil / krill / algae productsNo single half-life across forms
- Prescription icosapent ethyl · plasma EPAAbout 89 hours
- Felt duration people report
- Immediate feelMostly burps or nothing
- Lab changesTriglycerides or omega-3 index assessed over weeks to months
Cycles people discuss
Daily staple talk, with outcome trials measured in years — not an 8-week blast.
Timing
Omega-3 index is weeks-to-months. Do not paste icosapent plasma figures onto every grocery oil.
Around the dose
Clock: With a meal that has fat. Empty-stomach burp logs are the warning.
Stacks
The boring tray is creatine and vitamin D; membrane-antioxidant oils add CoQ10 or astaxanthin.
Access talk
Supplement shelf and pharmacy, not RUO. Costco fish oil vs IFOS-tested bottles vs a prescription icosapent-ethyl fill.
Labs people mention
Triglycerides are the lab people actually chase.
Watch for
Rancid / oxidized oil: Paint-smell, repeat fish-burp, headache. Quality failure, not a badge.
Tap a line to jump into the full notes. Research only — may be wrong.
Timing context & sources
Half-life in the body
No single consumer half-life covers drugstore fish oil, krill, algae, and icosapent ethyl.
RBC omega-3 index changes over weeks to months. Plasma EPA after a prescription icosapent dose is a different product’s PK.
Outcome-trial milligrams and IFOS bottles are not one terminal T½.
- Bhatt et al. — REDUCE-IT icosapent ethyl (NEJM 2019) (opens in a new tab)4 g/day icosapent ethyl vs mineral oil; primary composite 17.2% vs 22.0% (HR 0.75) in statin-treated high-risk patients; high-dose purified EPA, not grocery 180/120 fish oil.Prescription EPA ethyl ester vs mineral oil; not STRENGTH, not rancid-softgel PK, not a gym recovery trial.
Felt duration people report
Feel is mostly burps or nothing; triglyceride and index talk is weeks to months.
Rancid-paint smell is treated as a bad bottle, not a dose-response.
Burp diaries are not CV-outcome evidence.
- Bhatt et al. — REDUCE-IT icosapent ethyl (NEJM 2019) (opens in a new tab)4 g/day icosapent ethyl vs mineral oil; primary composite 17.2% vs 22.0% (HR 0.75) in statin-treated high-risk patients; high-dose purified EPA, not grocery 180/120 fish oil.Prescription EPA ethyl ester vs mineral oil; not STRENGTH, not rancid-softgel PK, not a gym recovery trial.
What people say
- Mood / rumination diaries: EPA-forward oils get named in depression-adjacent threads; evidence is mixed and dose/EPA-fraction dependent. trialforum
- DOMS / joint comfort lore: Training logs credit fish oil; trials are modest and confounded by training. forum
- Algae DHA/EPA: Vegan workaround; DHA-heavy products are not icosapent ethyl. forum
- Triglycerides: The replicated human effect. Higher EPA+DHA milligrams, larger TG drops in people who started high. trial
- REDUCE-IT: 4 g/day icosapent ethyl; primary endpoint 17.2% vs 22.0% on mineral oil (HR 0.75) in high-risk patients on statins. Disease trial, not a gym log. trial
- STRENGTH null: Mixed EPA+DHA at 4 g-class doses did not beat corn oil on CV events — the paste-bin counterweight. trial
- Omega-3 index: RBC EPA+DHA % as a status marker (Harris). Treating to a number is not the same as a CV-outcome trial. trial
- LDL-C catch: DHA-containing oils can raise LDL-C while TG fall — the lipid panel surprise. trial
Doses people talk about
- Grocery softgel math: A “1000 mg fish oil” cap is often ~180 mg EPA + 120 mg DHA (or similar). Threads count the EPA+DHA line. forum
- Biohacker 1–2 g EPA+DHA/day is the common “I actually read the label” band. forum
- Krill milligrams are not 1:1 fish-oil milligrams. Phospholipid marketing is a different label fight. forum
- Framing: EPA+DHA milligrams, not “1 g fish oil.” Not a protocol. forum
- AHA-style food band: Fatty fish ~1–2×/week is food advice, not a 4 g capsule conversion. trial
- High-TG / labeled 4 g class: 4 g/day EPA (icosapent ethyl) or 4 g/day mixed omega-3 ethyl esters in prescription hypertriglyceridemia charts. trial
How it may feel
- Hours: Fish burp or “nothing.” Not a stimulant. forum
- Days 1–7: GI and repeat-burp logs; freezer and with-meal tricks show up here. forum
- Rancid tell: Paint-smell, repeat fish-burp, headache. Those threads toss the bottle, they do not add milligrams. forum
- Stop: Burps stop fast; index and TG drift back over weeks to months. forum
- Weeks 4–12: Triglyceride re-checks in the people who actually draw labs. trial
- Months: Omega-3 index talk — RBC incorporation is slow. trial
Around the dose
- Clock: With a meal that has fat. Empty-stomach burp logs are the warning. forum
- Fridge / freezer is the rancid-and-burp workaround, not a PK hack. forum
- Training: Some swallow peri-workout; most just take it with dinner. forum
- After: Paint-smell or repeating fish-burp and they bin the bottle. They do not double it. forum
Cycles people discuss
- Daily food-like staple, not an 8-week blast. forum
- People stop for burps, surgery/bleeding scares, or AFib headlines — not a PCT. forum
- Rancid bottle gets thrown out, not cycled. forum
- Outcome trials ran years (REDUCE-IT median ~4.9 years). trial
Timing
- Burp timing is formulation and meal fat, not half-life flex. forum
- Daily intake offsets ongoing oxidation/use; missing one cap does not empty RBC stores. forum
- Membrane / omega-3 index is weeks-to-months, not a two-hour pre-workout clock. trial
- Plasma EPA after a prescription icosapent dose is not drugstore TG-oil PK. Do not paste one 89-hour figure onto every Costco softgel. trial
More on what it is
- Why people talk about it: Cheap staple next to creatine and vitamin D; triglyceride labs; “rancid oil” rage; REDUCE-IT screenshots vs STRENGTH shrugs. forum
- Not a peptide, not Vascepa-in-a-Costco-softgel by default. Prescription icosapent ethyl is a different identity than a 180/120 grocery softgel. forum
- Rancid oil is the community quality test: Smell, fish-burp, TOTOX/IFOS talk. Oxidation is treated as the thing that makes a cheap bottle worthless. forum
- What it is: Long-chain omega-3 fats EPA and DHA, usually from fish oil, sometimes algae or krill. The bottle number that matters in serious threads is milligrams of EPA+DHA, not “1000 mg fish oil.” trial
- Triglycerides are the honest pharmacologic effect: High-dose EPA/DHA lowers TG in a dose-dependent way; 4 g/day class reductions of ~20–30% in high-TG people are the labeled story. trial
- REDUCE-IT vs STRENGTH: 4 g/day icosapent ethyl (purified EPA) cut a composite CV endpoint vs mineral oil in REDUCE-IT. STRENGTH’s EPA+DHA carboxylic acids vs corn oil did not. Forum fights never settle the comparator oil. trial
Stacks
- + Creatine monohydrate + vitamin D is the boring longevity/gym tray. forum
- + CoQ10 / Ubiquinol or Astaxanthin in “membrane antioxidant” oils. forum
- + Berberine when lipids/glucose are the same screenshot. forum
- Not a GLP pin. People on semaglutide still swallow fish oil as food-like support; that is not a combo trial. forum
Access talk
- Supplement shelf and pharmacy, not RUO. Costco fish oil vs IFOS-tested bottles vs a prescription icosapent-ethyl fill. forum
- Read EPA+DHA milligrams. “1000 mg fish oil” is the trap label. forum
- Rancid Amazon bottles are the gray-quality problem for this identity — oxidation, not a mislabeled peptide. forum
- Prescription icosapent ethyl is still not Schedule I–V. Prescription ≠ controlled in this screen. trial
Labs people mention
- Triglycerides are the lab people actually chase. trialforum
- AFib history is the conversation before high-gram experiments in those threads. forum
- LDL-C / non-HDL because DHA-containing oils can nudge LDL up. trial
- Omega-3 index (RBC EPA+DHA %) is the status flex, not a proven treat-to-target outcome trial. trial
Storage notes
- Softgels / food, not a peptide vial. forum
- Dark, cool, sealed; fridge after opening is common rancid-prevention talk. Heat and time oxidize oil. forum
Watch for
- Rancid / oxidized oil: Paint-smell, repeat fish-burp, headache. Quality failure, not a badge. forum
- GI / reflux / fish burp. forum
- Bleeding-time lore at high grams, usually modest in trials; peri-procedure threads still pause and ask a clinician. trialforum
- Grocery milligrams ≠ REDUCE-IT. Copying 4 g icosapent headlines onto three cheap 180/120 caps is the identity error. forum
- Atrial fibrillation signal: High-dose n-3 outcome trials showed a small, dose-related incident-AF bump vs comparators; later biomarker papers argue blood omega-3 status is not the same as “supplements cause AF.” Unsettled, not zero. trial
- LDL-C can rise on DHA-containing oils while triglycerides fall. trial
Evidence mix
Mixed trial + community tags
Full: every bullet (trial + community). Use Scan for a faster bro-science read.