Review · Weight and sleep health

Renew review: what we could verify about the formula

Renew is a bedtime capsule marketed around sleep and broader wellness. Its page names eight ingredients but does not disclose their amounts, which makes it difficult to judge whether the formula resembles the research.

By Grant Whitaker, Editor · Updated October 23, 2026 · 11 PubMed records checked

This is a compensated review. Stark Verve may earn a commission if you buy through a link on this page.

What Renew is, and what the page tells us

Renew is sold as a capsule to take with water 30 to 45 minutes before bed. The sales page presents it as a nightly sleep formula and also attaches broader claims about metabolism, energy, and body composition. The vendor's consumer site is renew-nightly.com. The provided ClickBank hoplink first routes through a page at saltwatertrick.org, whose headline is about a salt-water weight-loss idea; that page does not clearly explain how the hook relates to Renew. We treated the Renew domain as the product page for package and formula details, while noting the mismatch because it is the experience readers will get from the supplied link.

The sales page names ashwagandha, Griffonia simplicifolia, L-theanine, melatonin, zinc, magnesium, L-arginine, and L-lysine. One section refers to five nutrients, while the named list contains eight. It does not show a readable Supplement Facts label or publish the amount of any ingredient. We also could not confirm the magnesium form, the standardization of the ashwagandha extract, or how much 5-HTP the Griffonia contributes. We describe the disclosed ingredient names, but cannot independently confirm what is inside a bottle.

Some of these names also appear in Yu Sleep, another bedtime supplement reviewed here, but the disclosed ingredient lists and delivery formats differ; we found no basis to call the two formulas identical or near-identical. Read our Yu Sleep review.

The formula beside the research

Without doses, this comparison can only show whether individual ingredients have relevant human research. It cannot establish that Renew delivers the same preparation or amount used in a study.

Ashwagandha: some promising results, with an extract caveat

A meta-analysis pooled five randomized trials with 400 adults and reported a modest improvement in sleep measures. The signal was stronger in studies using at least 600 mg daily for eight weeks or more, especially among participants with insomnia ^[1]. Another six-week trial studied 120 mg of a specific standardized extract in 150 adults reporting non-restorative sleep ^[2]. These results cannot be transferred directly to Renew because its page gives neither a dose nor extract details. They also do not establish an effect on body weight.

Melatonin: dose and timing change the comparison

Melatonin is not a one-size-fits-all ingredient. In a crossover trial of healthy adults age 65 and older with sleep-maintenance complaints, 5 mg of fast-release melatonin at bedtime for four weeks did not significantly improve measured sleep outcomes ^[3]. Renew does not disclose its amount or release form. That omission matters when the page recommends taking it shortly before bed.

Magnesium and L-theanine: limited ability to judge

A review of three trials involving 151 older adults found a possible reduction in time to fall asleep, but rated the evidence low to very low quality ^[4]. A 2025 trial with 155 adults found a small improvement in insomnia scores after 250 mg elemental magnesium bisglycinate daily for four weeks ^[5]. Renew lists magnesium but not the chemical form or elemental amount. A recent L-theanine meta-analysis found small improvements in some self-reported sleep measures across varied studies, while also calling for better dose and duration research ^[6]. Renew provides no dose to compare.

Griffonia and the weight angle

Griffonia seeds can supply 5-HTP, but naming the plant does not disclose how much 5-HTP a capsule contains. In a small single-blind study, 30 adults with an average age around 66 were assigned to 100 mg daily for 12 weeks or a control group; some subjective sleep scores improved among poorer sleepers ^[7]. A separate small trial studied a combined amino-acid preparation, so its results cannot isolate 5-HTP ^[8].

A 35-person crossover trial tested a coffee-pod product with 1.9 mg melatonin and 200 mg magnesium for four weeks. Some measures favored the supplement, but participants still averaged poor sleep scores and the formula was not Renew ^[9]. The study also measured body composition and resting metabolism, but cannot support a weight-loss promise for a different product. We found no published clinical trial of Renew that verifies the sales page's broader metabolism or weight claims.

Price, packages and return policy

The Renew page showed these one-time packages when checked. It recommends a 30-day supply for the single bottle, 90 days for three, and 180 days for six.

• 6 bottles: $39 each, $234 total, with free US shipping.
• 3 bottles: $49 each, $147 total. Shipping was not clearly specified on the page captured.
• 1 bottle: $69. Shipping was not clearly specified on the page captured.

The page describes a 60-day return period, including opened bottles, with shipping and handling excluded. Its guarantee copy says a refund follows return of the product. Check the current checkout terms before ordering. The page also says purchases are one-time, with no automatic shipment. Since it does not state a serving count per bottle in the information we captured, the actual daily cost and supply length should be confirmed with the seller.

Safety

Because the doses and forms are unknown, it is not possible to estimate how Renew's ingredients combine or whether the serving is appropriate for you. Melatonin can cause drowsiness, and combining bedtime supplements with alcohol or other medicines that make you sleepy can add to impairment. Melatonin has also affected blood-coagulation measures in a small human study, so discuss it with a clinician if you take an anticoagulant ^[11].

Magnesium can reduce levothyroxine absorption when taken together; separate timing should be discussed with a pharmacist or prescriber ^[10]. Griffonia-derived 5-HTP may be relevant if you use a serotonin-affecting medicine, so ask your doctor or pharmacist before combining them. This is especially important when several ingredients are bundled without amounts. Talk with your doctor before starting Renew if you use prescription medication or have a health condition. New or worsening sleep or weight-related symptoms deserve medical care. Results vary.

What we liked and what gave us pause

Frequently asked questions

Does Renew have a published clinical trial?

We did not find a human trial of the complete Renew formula. The ingredient studies above used known amounts and preparations, which cannot be matched to the product from the information published on its page.

Can Renew help with weight management?

The page makes broader metabolism and body-composition statements, but we found no trial of Renew itself showing a weight outcome. We would not use this product with an expectation of a particular change on the scale.

How should it be taken?

The page says to take one capsule with water 30 to 45 minutes before bed. Ask your clinician or pharmacist whether its ingredients are appropriate alongside your medicines.

Is it a subscription?

The sales page describes orders as one-time payments without automatic shipments. Confirm the terms on the checkout page before submitting an order.

How we reviewed Renew

We checked the vendor page and affiliate terms, recorded the ingredients and package details it disclosed, and compared named sleep ingredients with human studies indexed on PubMed. We did not test the product on people. The vendor page did not provide a readable Supplement Facts label or ingredient quantities, so we could not compare doses. Nobody at Stark Verve is a medical professional. Read our editorial policy to learn how we choose and update reviews. Stark Verve may earn a commission when a reader buys through our links; that does not change our assessment.