Yu Sleep vs Relaxium Sleep: Which Formula, Dose and Buying Model Is the Better Fit?

How we compared them

For Yu Sleep we used the 2026 Supplement Facts panel and the official offer page. For Relaxium Sleep we used the panel published by a national retailer, because Relaxium's own website blocked our automated access on October 5, 2026. Formulas and prices change, so check the bottle and order form you actually see.

Yu Sleep vs Relaxium at a glance

Melatonin: 0.9 mg vs 5 mg

This is the clearest difference. Melatonin is a timing signal for your body clock, not a knockout pill. MIT research found that 0.3 mg improved sleep in older adults with insomnia, while 3 mg kept blood melatonin raised into the next day.

Relaxium's standard serving has 5 mg, and its label allows up to four capsules, or 10 mg. Yu Sleep stays at 0.9 mg. If full-strength melatonin has left you foggy in the morning, the lower dose is the logical thing to try. If 5 mg works for you without a hangover, Relaxium's dose is not a problem in itself. The NIH notes that short-term melatonin use appears safe for most adults, while long-term data are lacking. See our guide on low dose melatonin vs high dose.

Dose transparency: who shows their work

Relaxium wins this round. You can read 500 mg of L-tryptophan, 100 mg of magnesium, 125 mg of ashwagandha extract and 100 mg of GABA right off the panel. The one soft spot is Valerest, a 228.9 mg blend of valerian root and hops extracts whose split is not given.

Yu Sleep discloses three numbers: melatonin and the two B vitamins. The other seven ingredients share a 637 mg blend. Studied doses of magnesium glycinate alone are often larger than that whole blend, so several ingredients must be present in small amounts. See our Yu Sleep ingredients list.

The other ingredients, and who should be careful

The formulas overlap on melatonin, magnesium and GABA, then take different roads.

• Relaxium leans on sedating herbs. Valerian, hops, chamomile and passionflower are traditional sleep herbs with mixed trial results. Ashwagandha, which Relaxium's marketing identifies as the branded extract Sensoril, is used for stress.
• Yu Sleep leans on calming amino acids. L-theanine, GABA and 5-HTP, plus apigenin and lemon balm.

Both have cautions worth knowing:

• Antidepressants. L-tryptophan and 5-HTP both feed serotonin production. Combining either with an SSRI, SNRI or MAOI should be cleared with a prescriber. See vitamin B6 sleep.
• Ashwagandha (Relaxium only). The NIH says to avoid it in pregnancy and while breastfeeding, does not advise it for people with thyroid disorders, and notes rare cases of liver injury.
• Drowsiness. Relaxium's label warns against use with alcohol or before driving. The same applies to Yu Sleep.

Drops vs capsules

Capsules travel well, have no taste and keep longer. Drops let you adjust the amount and may get melatonin into the blood a little sooner when held under the tongue. That edge is small, and minerals and amino acids are absorbed in the gut either way. If you dislike swallowing pills, the liquid is easier. More in Yu Sleep formula.

Price per night

Yu Sleep costs $69 per bottle for two, $59 for three and $49 for six. That is $1.63 to $2.30 per night, and the two-bottle pack adds shipping. There is no single-bottle option on the official offer.

A national vitamin retailer listed the 60-capsule bottle at $29.99 when we checked, about $1.00 per night at two capsules. Third-party reviewers report a direct price near $45 plus about $8 shipping, roughly $1.75 per night. At four capsules, double every figure.

Trials, autoship and the public record on Relaxium

Relaxium is heavily advertised on television, often with a low-cost trial. Several public bodies have looked at how those offers and claims were presented.

• 2018, ad-industry review. The Electronic Retailing Self-Regulation Program, part of the BBB's self-regulation system, reviewed Relaxium Sleep advertising. It recommended that the marketer change or stop several claims, including "clinically studied," found others could stand if tied to individual ingredients, and flagged how the risk-free trial terms were disclosed.
• 2022, class action. A lawsuit in federal court in New York alleged that "clinically proven" and sleep-expert claims were misleading. These were allegations. Truth in Advertising lists the case as settled.
• 2023, California prosecutors. A task force of district attorneys announced a court judgment over automatic renewal disclosures and advertising claims. The company agreed to pay $925,000 in penalties and costs and to change its disclosures. It did not admit liability.
• 2025, FDA warning letter. The FDA wrote to the company about running a 40-person sleep-disorder study without first filing an investigational new drug application. The company maintained that Relaxium is a dietary supplement, not a drug.

Customer feedback reflects the billing issue. On October 5, 2026, Relaxium's Trustpilot page showed a TrustScore of 1.7 out of 5 from 179 reviews, with unexpected charges after the trial as the leading complaint. The company had replied to most negative reviews. Its BBB profile showed an A+ rating with 127 complaints closed in three years. Relaxium is a far larger and older brand than Yu Sleep, so raw counts are not a fair comparison.

Yu Sleep's record is thinner because the brand is newer and smaller. Its BBB profile shows a C+ rating and six complaints closed in three years, mostly about refunds from the text we could see. The official offer is a one-time charge. Our Yu Sleep BBB audit has the details.

Who each one suits

Relaxium may suit you if

• You want to see every dose before you buy.
• Standard-dose melatonin has worked for you without morning fog.
• You prefer capsules and want to buy one bottle in a store.

Yu Sleep may suit you if

• Higher melatonin doses leave you groggy.
• You would rather take a liquid than swallow capsules.
• You want a one-time purchase with a 60-day guarantee and no trial billing to manage.

Skip both if

• You take an SSRI, SNRI or MAOI and have not asked your prescriber.
• Your insomnia has lasted three months or more. See a doctor and ask about CBT-I.

Frequently asked questions