Melatonin 300mcg, 100 Capsules
Life Extension Melatonin 300mcg delivers melatonin in a low-dose format designed to support healthy sleep onset and circadian rhythm regulation.
May be a fit for
- Adults seeking low-dose melatonin for occasional sleep onset support
- Individuals sensitive to standard melatonin doses preferring 300mcg
- Those adjusting sleep cycles during travel across time zones
Save together with Wellness Circles
Invite friends or family to a Wellness Circle. Your group can unlock savings together. See current tiers and terms before joining.
Explore Wellness CirclesA closer look.
Life Extension Melatonin 300mcg delivers melatonin in a low-dose format designed to support healthy sleep onset and circadian rhythm regulation. At 300mcg, well below the milligram-range doses common in most retail products, this formulation is aimed at adults seeking a physiologically modest option for occasional sleep support.
Why It's Worth Considering: The 300mcg dose aligns with research suggesting lower amounts may be sufficient for sleep timing support while minimizing next-morning grogginess associated with higher doses.
50+ signals. A clearer standard.
Our curation and trust scoring bring together manufacturing, testing, research, practitioner insight and reviews from across the web.
Our score is an editorial assessment, not a product certification or a guarantee of results.
Product details
Who it may suit
May be a fit for
- Adults seeking low-dose melatonin for occasional sleep onset support
- Individuals sensitive to standard melatonin doses preferring 300mcg
- Those adjusting sleep cycles during travel across time zones
- Older adults maintaining natural melatonin levels that decline with age
Considerations
- Autoimmune conditions (melatonin stimulates immune activity)
- Depression (may worsen in some individuals)
- Taking blood thinners or blood pressure medications
- Children under 3 (consult pediatrician)
Compatibility & interactions
Works Well With
Ask Gabriel for personalized stacking recommendations.
Take Separately From
No significant interactions identified. Always consult your healthcare provider.
What to expect over time
Immediate Effect
Faster sleep onset (20-30 min)
Rhythm Reset
Circadian clock begins recalibrating
Consistent Sleep
Reliable sleep-wake pattern established
Maintenance
Use lowest effective dose or cycle periodically
Based on melatonin supplementation research. Works best as a circadian rhythm signal, not a sedative.
Explore complementary products
Pure Encapsulations - Magnesium (Glycinate), 180 CapsulesMelatonin signals 'time to sleep' while magnesium glycinate promotes muscle relaxation and GABA activity. The definitive sleep stack.$46.99
Pure Encapsulations - L-Theanine, 60 CapsulesL-theanine reduces pre-sleep anxiety and racing thoughts via alpha brain waves, complementing melatonin's circadian signal.$65.99
Thorne - Glycine, 250 CapsulesGlycine lowers core body temperature (a sleep trigger) and improves sleep quality and next-day alertness. Different mechanism than melatonin.$31.99Real reviews. A wider perspective.
Customer reviews, social conversations and expert insights, with every source in view.
- Marketplaces & brand websites
- Amazon, iHerb and direct brand reviews
- Social & community
- Reddit, X, Instagram and TikTok
- Video & creators
- YouTube and creator perspectives
Coverage varies by product and brand.
182 product and brand ratings and mentions across 8 sources.
These are broader practitioner and research perspectives. They may discuss the brand or other products, rather than this exact formula.
Explore the source sentiment summary
Low-dose melatonin (300mcg) draws praise from informed users, but many find melatonin broadly ineffective, with AASM now cautioning against its use for insomnia.
This summary includes broader brand discussion. Individual experiences are not evidence of product effectiveness.
A few useful answers.
Research & further reading
More category questions
How much melatonin should I take?
Start with 0.3-0.5mg — this is the physiological dose that mimics natural production. Most supplements are dosed at 3-10mg which is 10-30x the physiological amount. Higher is NOT better — studies show 0.3mg is often more effective than 3mg because excess melatonin can cause morning grogginess and disrupt the receptor sensitivity.
Is melatonin safe to take every night?
Short-term use (up to 3 months) is well-established as safe. Long-term nightly use is common but some practitioners recommend periodic breaks (5 nights on, 2 off) to maintain receptor sensitivity. Melatonin does not cause dependence — your body still produces its own. However, addressing the root cause of insomnia (light exposure, stress, caffeine timing) is always preferred.
Why do I feel groggy after taking melatonin?
You're likely taking too much. The most common mistake is using 3-10mg when 0.3-1mg is sufficient. Melatonin is a circadian signal, not a sedative — excess stays in your system and causes morning drowsiness. Try cutting your dose in half. Also, take it 30-60 minutes before bed, not right at bedtime.
Does melatonin work for jet lag?
Yes — this is one of melatonin's best-studied uses. Take 0.5-3mg at the destination's bedtime for 3-5 days after arrival. For eastward travel (harder adjustment): start taking melatonin at destination bedtime 1-2 days before departure. For westward: take melatonin only upon arrival.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.