Ecological Formulas/Cardiovascular Research

Multiphasic Melatonin SR (1.8mg), 60 Tablets

Multiphasic Melatonin SR delivers 1.8mg of melatonin in a sustained-release form designed to support the body's natural sleep-wake cycle across multiple phases of the night

3.8 across 8 sources

May be a fit for

  • Adults seeking sustained-release melatonin support for overnight sleep continuity
  • Individuals who wake mid-sleep and may benefit from multiphasic melatonin delivery
  • Those supporting natural circadian rhythm regulation with low-dose 1.8mg melatonin
$15.99

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TabletsFormat
60 TabletsPack size
The essentials

A closer look.

Multiphasic Melatonin SR delivers 1.8mg of melatonin in a sustained-release form designed to support the body's natural sleep-wake cycle across multiple phases of the night. Rather than a single-burst release, the sustained-release matrix is formulated to help maintain melatonin availability over an extended period, making it a consideration for adults who have difficulty staying asleep, not just falling asleep.

Why It's Worth Considering: The sustained-release delivery and lower 1.8mg dose reflect a measured approach to melatonin supplementation, closer to physiological levels than many higher-dose products on the market.

The Apotheca perspective

50+ signals. A clearer standard.

Our curation and trust scoring bring together manufacturing, testing, research, practitioner insight and reviews from across the web.

79OUT OF 100
Manufacturing5757
Lab verification7878
Transparency7070

Our score is an editorial assessment, not a product certification or a guarantee of results.

Inside the formula

Product details

Who it may suit

May be a fit for

  • Adults seeking sustained-release melatonin support for overnight sleep continuity
  • Individuals who wake mid-sleep and may benefit from multiphasic melatonin delivery
  • Those supporting natural circadian rhythm regulation with low-dose 1.8mg melatonin
  • Shift workers or travelers seeking gradual melatonin release for sleep-wake cycle support

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
Day 1

Immediate Effect

Faster sleep onset (20-30 min)

Day 1–7

Rhythm Reset

Circadian clock begins recalibrating

Week 2–4

Consistent Sleep

Reliable sleep-wake pattern established

Month 1+

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
From across the web

Real reviews. A wider perspective.

Customer reviews, social conversations and expert insights, with every source in view.

3.8/5Aggregate source rating
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.

187 product and brand ratings and mentions across 8 sources.

Explore the source sentiment summary

Highly mixed sentiment; low-dose timing shows promise for circadian support but many find melatonin ineffective for insomnia with notable side effect concerns.

This summary includes broader brand discussion. Individual experiences are not evidence of product effectiveness.

Good to know

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.

Ecological Formulas/Cardiovascular Research - Multiphasic Melatonin SR (1.8mg), 60 Tablets Ecological Formulas/Cardiovascular Research

Apotheca quality score

79/100

The overall score combines several sources of information. The individual dimensions below show where those signals are stronger or more limited; they are not a simple average of the overall score.

Manufacturing5757
Lab verification7878
Review consensus71.771.7
Practitioner signals55.055.0
Community signals6060
Transparency7070
See available brand signals
✓
Good manufacturing practices verifiedStandard
✓
Quality ingredients with verified sourcingGood
✓
Clean FDA regulatory recordNo issues
✓
Positive consumer reviews and community feedbackGood
✓
Authorized distribution channel verifiedDirect

Our score is an editorial assessment, not a product certification or a guarantee of results.

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