You want some of the day left for yourself.
The frustrating thing about a disappointing night is how easily it becomes everyone else's perfectly ordinary day.
The alarm still goes off. The meeting still starts at nine. Someone still needs an answer. You find a way to do what needs doing, because that is what you do.
But by the time you get a choice about your time, your first choice is often to do less.
Maybe you were going to meet a friend. Cook something you actually wanted to eat. Spend an hour on the thing you keep saying you'll get back to. Nothing extraordinary. Just a few things that make a day feel like yours.
It is a small disappointment to put them off once. It is a bigger one when putting them off starts to feel normal.
That is what makes the search for a better night personal. You would like tomorrow to ask a little less effort of you. You would like a quiet evening to feel enjoyable, instead of becoming another stretch of time you have to get through before trying to sleep again.
So when you look at an evening supplement, it is reasonable to care about more than the moment you close your eyes.
They looked at the morning after, too.
In a human study published in 2007, researchers gave 3 grams of glycine before bedtime to volunteers who were dissatisfied with their sleep.
Participants reported better sleep quality. Overnight measurements also showed that they fell asleep sooner. Their overall pattern of sleep stages did not change.
The researchers also evaluated what happened during the day: less sleepiness and better performance on a memory-recognition task were reported with glycine.
Those findings are encouraging, particularly if the following day is what brought you here. They come from a small study, with several authors affiliated with Ajinomoto. It tested glycine, not Nightspan. A memory task also cannot tell us how someone will feel at work or with friends. Read the study.
Nightspan contains that same 3-gram amount of free-form glycine in every serving.
The amount belongs beside the ingredient name.
Once an ingredient catches your attention, finding its name on a jar can feel like finding what you were looking for.
There is one more number worth looking for before you choose: how much you actually get.
A blend's total weight answers a different question. Imagine a label that gives you the weight of a whole mixture and lists glycine among several ingredients. You would know glycine was included. You would still have to find its individual amount to compare it with the 3 grams used in that study.
Nightspan puts the answer on its own line: Glycine — 3,000 mg — free-form.
The magnesium, theanine, saffron, and zinc come alongside that amount. Their combined weight does not stand in for the glycine figure.
This makes the research connection something you can check for yourself. The ingredient and its amount are both there, together. You can turn the bag around and find the detail that first gave you a reason to consider it.
Already looking at magnesium glycinate? There is a useful distinction.
The similar names can make this confusing. Glycine is an amino acid. Magnesium bisglycinate is a form of magnesium that includes glycine bound to the mineral.
Nightspan lists these separately: 3,000 mg of free-form glycine and 250 mg of elemental magnesium, supplied as fully reacted bisglycinate. Its free-form glycine amount is additional to the glycine in that magnesium ingredient.
That matters if your search started with magnesium and then led you to the glycine research. You can see both ingredients and the amount of each in the same formula. There is no need to work backward from the word “bisglycinate” to establish whether Nightspan contains a separately declared 3 grams of free-form glycine.
The 250 mg figure tells you how much magnesium is supplied. The 3,000 mg figure tells you how much separate glycine is supplied. Each number has its own job.
A full 3 grams of glycine. Four ingredients beside it.
Finding glycine may have been the beginning of your search. It may also have left you wondering about the magnesium or theanine you had already been reading about.
With Nightspan, the full glycine amount remains in place as those other ingredients join the formula. You receive magnesium bisglycinate, 200 mg of L-theanine, 28 mg of standardized saffron extract, and 15 mg of elemental zinc in the same powder.
There is no melatonin in Nightspan. If that is a choice you have already made for your evening routine, this formula follows it.
Now the question becomes what each addition brings to the formula. Magnesium is a useful place to begin.
What did another 3-gram study find the following day?
A second study asked a more specific question: what happens the next day when time in bed is cut short? In a randomized crossover study published in 2012, seven healthy men were analyzed after taking 3 grams of glycine or placebo before bed. Their time in bed was reduced by 25% for three nights.
Reported fatigue improved on the first day, but not the third. Reaction times on a sustained-attention test improved on both measured days; other performance tests did not show significant differences. Participants and several authors were affiliated with Ajinomoto. This was a very small, short study of glycine alone, not proof that Nightspan treats ongoing fatigue or makes up for insufficient sleep. Read the next-day study.
The 3-gram amount gives you a specific connection to both studies as you consider the complete formula.
Your body uses glycine to make collagen, too.
Collagen is a structural protein in skin, tendons and other connective tissues. Your body makes it from amino acids, including glycine.
Glycine has a recurring place in that process: every third position in the repeating sequence of fibrillar collagen. Its small size helps the protein's three strands fit together. Read the collagen structure research.
Nightspan supplies 3,000 mg of free-form glycine per serving. Collagen formation is one of this amino acid's established biological roles†. That role does not establish that Nightspan increases collagen production or improves skin or joints.
There is a reason magnesium keeps coming up.
Magnesium may have been the first thing you looked into. Before glycine. Before the growing collection of tabs open on your phone. It is a familiar name when you start looking for an evening supplement.
There is something more specific behind the magnesium in Nightspan.
In a four-week study of 155 adults who reported poor sleep, researchers tested magnesium bisglycinate supplying 250 mg of elemental magnesium daily. That is the form and magnesium amount in Nightspan.
The study found a small improvement in insomnia-symptom scores compared with placebo. Other questionnaire results did not differ significantly. The tested supplement also supplied glycine, so the findings cannot tell us what magnesium alone would add to Nightspan's separate 3 grams. Read the magnesium study.
Magnesium also has an everyday nutritional role: your body needs it for normal muscle and nerve function†. Those jobs matter whether or not you are thinking about sleep. NIH magnesium fact sheet.
Nightspan gives you 250 mg of elemental magnesium as fully reacted bisglycinate, alongside the full glycine amount. You can bring both into your evening routine in the same powder.
Being tired and being ready for bed can feel like two different things.
The work is put away. The kitchen is quiet. You finally have a little time when nobody needs anything from you.
And somehow you are still having the conversation from three hours ago. Or planning the first three things you need to do tomorrow.
You would like to enjoy the quiet while you have it. Read a few pages. Let a thought pass without following it into another task.
L-theanine, an amino acid found in tea, has been studied for sleep—including the time it takes to fall asleep.
In one small study, 30 adults took 200 mg of L-theanine daily or a placebo for four weeks before switching treatments after a break. Certain parts of their sleep questionnaire favored theanine, including questions about falling asleep and sleep disturbances. The overall sleep score did not differ significantly between treatments. The ingredient manufacturer funded the study. Read the L-theanine study.
These are encouraging findings about selected sleep measures. They do not show that theanine switches off a busy mind.
Nightspan contains 200 mg of L-theanine per serving, the amount examined in that study. It comes with the glycine and magnesium, without another product to add to your order.
A good night is about more than falling asleep.
You may know saffron from the kitchen. The interest here comes from studies of concentrated extracts, including research that asked people how satisfied they were with their sleep.
That question is easy to appreciate. Time in bed tells you one thing. How you feel about the night you just had tells you something else.
In a 28-day study of 120 adults with unsatisfactory sleep, the standardized saffron extract used in Nightspan improved sleep-quality ratings compared with placebo. Researchers tested both 14 mg and 28 mg, with similar improvements at either amount. Several other measures did not differ between groups. The extract manufacturer funded the study. Read the saffron study.
Nightspan contains 28 mg of saffron extract, standardized to at least 3.5% Lepticrosalides.
Zinc completes the five-ingredient formula.
Nightspan also supplies 15 mg of elemental zinc as bisglycinate. Your body uses zinc for normal protein production and immune function†. Its role here is nutritional; we are not claiming this zinc ingredient has been shown to improve sleep. NIH zinc fact sheet.
If zinc is already in your multivitamin or another supplement, include that amount when reviewing what you take with Nightspan.
Shopping for a better night should not take over your evenings.
You read about glycine and save the page. Then you look into magnesium. Someone mentions theanine, and another jar goes on the list.
The ingredients interest you. Keeping track of several products, measuring several servings and remembering which one needs replacing is less appealing.
Nightspan brings the five ingredients together in one evening powder. The full 3 grams of free-form glycine. Magnesium bisglycinate. Theanine. Standardized saffron. Zinc. One 30-serving bag to keep on hand, one product to replenish.
You can choose the complete formula once, then make room for it in the evening you already have. Keep the bag near the place you prepare it, with its directions at hand. Five selected ingredients come together in one product to keep track of and replenish.
The amounts come together, so individual products remain the option if you need to adjust an ingredient separately. Combining them has not established a greater sleep benefit; the practical advantage is having this complete selection in one powder.
Your current supplement does not have to become a mistake.
Perhaps you already have a magnesium product you like. Now you have seen the 3-gram glycine findings and want to bring that ingredient into your evening, too.
Nightspan gives your next bag a clear reason to be different: 250 mg of elemental magnesium as fully reacted bisglycinate, plus a separate 3,000 mg of free-form glycine, with theanine, saffron and zinc alongside them.
That is the choice in front of you. Bring those ingredients together in Nightspan, or keep choosing them separately. You can compare every amount in the panel below.
Review the full contents of anything you would replace, including different mineral amounts or ingredients Nightspan does not contain. If a clinician recommended your current supplement, discuss the change with them first.
Here is the complete serving, in one place.
The details should be easy to find when you are ready to compare. These amounts apply to every 30-serving Nightspan bag.
| Active ingredient | Amount per serving | Form |
|---|---|---|
| Glycine | 3,000 mg | Free-form |
| Magnesium | 250 mg elemental | Fully reacted bisglycinate |
| L-theanine | 200 mg | Free-form |
| Saffron extract | 28 mg | Standardized to at least 3.5% Lepticrosalides |
| Zinc | 15 mg elemental | Bisglycinate |
If you are replacing a product you already use, check its full ingredient panel against this serving. The amounts may differ, and an existing blend may contain something Nightspan does not. If you take magnesium or zinc elsewhere, include those amounts when reviewing your total intake.
If you want to explore an ingredient further, the Nightspan research and product details collect the supporting information. You can return to the same panel whenever you need it.
Make room for the evening you actually have.
Picture the part of the evening you would like to keep for yourself. The kitchen is put away. The light beside your chair is on. There is a chapter you want to finish, or someone you finally have time to sit beside.
That time deserves a place in the day before every other task has taken its share.
Nightspan gives you one powder to bring into that routine. Keep the bag where you will use it and follow the product's serving and preparation directions. Each 30-serving bag brings the full five-ingredient formula together for a month of servings.
Your first eligible introductory subscription shipment also includes one digital copy of The Night Before: evening drink recipes, glycine and sleep research, and ideas for a routine you can make your own. The guide is a one-time bonus for that qualifying shipment—not part of one-time orders or later renewals. Open it, choose a recipe or idea that appeals to you, and make the routine your own.
The product directions govern how you prepare and use Nightspan; an ingredient study is not a mixing recipe. The rest of the evening is yours to arrange.
Give your expectations something firmer than a countdown.
It is understandable to want an answer to “How soon?” If you have been thinking about your nights for a while, patience may be the last thing you want another product to ask of you.
But a calendar promise would tell you more than these studies can.
The magnesium and saffron studies followed people for four weeks. The theanine trial also used four-week treatment periods. Those study lengths describe how researchers collected their results. They do not establish a date by which Nightspan will change your sleep, or a number of bags you have to buy.
Your own experience may be different from a study average. So may the reasons you are dissatisfied with your sleep. Keep that in mind when deciding whether an evening supplement is the next thing you want to try.
If sleep problems persist or interfere with your day, speak with a qualified clinician rather than relying on a supplement to explain or solve them. NIH guidance on sleep problems.
Bring Nightspan home on your terms.
Your first month. Your evening guide. $49.
Start with one 30-serving bag of Nightspan and The Night Before for $49 through the introductory subscription. Regular renewals are $53 every 30 days until canceled. The eligible first shipment includes:
- One month's supply of Nightspan: one 30-serving bag with the full 3 grams of free-form glycine, magnesium bisglycinate, L-theanine, standardized saffron and zinc. One melatonin-free powder.
- Your digital copy of The Night Before: evening drink recipes, a closer look at glycine and sleep research, and ideas for a routine that feels like yours. Included once with this qualifying introduction.
- Standard U.S. shipping included: the bag and guide are part of the introduction; applicable tax is extra.
Stay with your single-bag subscription, and every fourth paid shipment is planned to be just $43.80.
One month of the complete formula. A digital guide to return to. An evening you are making room for.
New customers only. The introduction applies to the first single-bag subscription shipment only, once per customer; the guide is included only with that shipment. It cannot be combined with other discounts. Standard U.S. shipping is included; applicable tax is extra. Purchases and subscription enrollment are not open yet. Get launch updates to hear when Nightspan becomes available.
Three bags. $49 each. No subscription.
Like the $49 per-bag price and prefer to buy once? Three months of Nightspan are $147, paid once: $49 per bag, with no automatic renewal.
That saves $72 compared with buying three separate $73 bags. Open the first bag and keep the next two ready. The complete formula is the same in each one.
One bag is a complete start.
One 30-serving bag gives you the complete Nightspan formula for a month. Choose $73, paid once, and decide for yourself when you want the next one. No recurring charge.
| One-time order | Total product price | Price per bag |
|---|---|---|
| One Nightspan bag | $73 once | $73 |
| Three Nightspan bags | $147 once | $49 |
| Six Nightspan bags | $258 once | $43 |
Standard U.S. shipping is included. Applicable tax is extra. These one-time orders do not renew.
Six bags supply six months for $258, paid once—$43 per bag. That is the lowest one-time price per bag in this offer.
Prefer to have your next delivery arranged?
Keep Nightspan in your evening and give yourself one less thing to remember. A subscription arranges your next delivery, with a lower regular price than the matching one-time package.
And every fourth paid shipment comes with an extra reason to stay: just $43.80 for the single bag. That is $9.20 less than the regular $53 renewal, on paid shipments 4, 8, 12 and beyond.
Choose one, three or six months at a time:
| Subscription | Regular charge per delivery | Delivery interval |
|---|---|---|
| One Nightspan bag | $53 | Every 30 days until canceled |
| Three Nightspan bags | $129 total; $43 per bag | Every 90 days until canceled |
| Six Nightspan bags | $234 total; $39 per bag | Every 180 days until canceled |
The single-bag introduction is $49, followed by regular $53 renewals until canceled; every fourth paid order receives the $43.80 reward price. Your paid introduction counts as order 1.
The reward is 40% off the matching one-time package price in total, not an additional 40% off the subscription price. Orders count within each subscription; skipped orders and failed payments do not count.
One-, three- and six-bag subscriptions qualify at their own matching package prices. The reward does not combine with other promotions. The reward is planned for launch with subscriptions; pause, skip and cancellation details will be available before enrollment opens.
New to Nightspan? Your first single-bag subscription delivery is $49.
The bag gives you a month of the formula. The Night Before gives you recipes, ingredient context and routine ideas to explore with it.
Browse the drink recipes when you want to try something different. Read the glycine and sleep research when you want to understand more. Find a routine idea you want to come back to tomorrow.
You receive one digital copy of the guide with your first eligible $49 single-bag introductory subscription shipment. It is included once per customer and does not repeat with renewals.
Regular renewals are $53 every 30 days until canceled, with the $43.80 reward price on every fourth paid order. The guide comes with the eligible introduction, rather than every delivery.
Know what comes with the purchase.
90 days from delivery. No product to send back.
Nightspan's launch guarantee gives you 90 days from delivery to request a purchase-price refund, without returning the product. No product return or return shipping is required. Final eligibility, exclusions and refund instructions will publish before checkout.
One 30-serving bag supplies one month of the five-ingredient formula. Standard U.S. shipping is included in all the prices shown; applicable tax is extra. Dispatch timing, guarantee eligibility and exclusions, refund instructions, tax and shipping treatment, processing timing and cancellation terms will be available before purchase.
Read the shipping and returns information for the current details. Exploring a package here creates no order, payment, reservation or subscription.
A few questions before you make room for the bag.
Already taking magnesium? Looking for the preparation directions? These answers put the practical details close at hand.
Is Nightspan a glycine-only powder?
No. Nightspan is Dayspan's five-ingredient evening powder built around 3,000 mg of free-form glycine.
The complete formula includes the four additional actives shown above, so the bag does not contain glycine alone.
Does Nightspan contain melatonin?
No. Nightspan is melatonin-free. That describes what is in the powder; the reasons to consider it are the ingredients and amounts you have read about here.
You can check the full serving in the formula table without guessing from the product name or the front of the bag.
I already use a magnesium supplement. Can Nightspan replace it?
Start by comparing the two full servings. Nightspan supplies 250 mg of elemental magnesium, together with its other ingredients. Your current supplement may use another amount, another form, or additional nutrients.
If your magnesium was recommended for a medical reason, ask the clinician who recommended it before replacing it. If you are considering using both, review the combined amounts first. A familiar ingredient name does not make every serving interchangeable.
Can I take extra Nightspan to get more glycine?
Follow the product's serving directions. Taking more of a combined powder also increases its magnesium, theanine, saffron and zinc. It does not let you increase glycine independently.
The 3-gram glycine research is one reason for the formula's composition. It is not an instruction to experiment with larger servings of the full blend.
What if I take medicines or have a health condition?
Bring the complete ingredient panel to a clinician or pharmacist who knows your situation. Magnesium and zinc can interact with some medicines, and kidney conditions are relevant when considering supplemental magnesium. Pregnancy and nursing also call for individual guidance. Nightspan is not intended for children. NIH magnesium information, NIH zinc information.
A useful discussion includes the other supplements you take, too. The Nightspan panel shows the amount in one serving; your total intake may include more than this bag.
How do I prepare it, and how long does a bag last?
Use the serving and preparation directions supplied with Nightspan. The ingredient amounts listed here do not establish a scoop size, mixing quantity or time of day for use.
One 30-serving bag provides a one-month supply. Three and six-bag packages provide three and six months, respectively. Preparation and serving instructions will be available before purchase. Follow those directions for how much to use and how to prepare it.
Do I have to buy Collagen Essentials with Nightspan?
No. Nightspan is a separate product and can be purchased on its own when ordering opens.
Collagen Essentials is Dayspan's collagen powder with carotenoids and vitamin C. It serves a different shopping interest. You do not need to add a collagen product to obtain the Nightspan formula, and this offer does not depend on buying a pair.
If you are already interested in both, the Essentials and Nightspan offer explains that separate choice. Buying them together has not been shown to improve either product's results.
Is the first-delivery subscription price a one-time purchase?
No. The $49 introduction begins a subscription for one 30-serving bag. Regular renewals are $53 every 30 days until canceled, with $43.80 on each fourth paid order. For a one-time purchase, one 30-serving bag is $73 or three bags are $147 total, with no automatic renewal.
Can I order or reserve a bag right now?
Purchases and subscription enrollment are not open yet. Launch updates will let you know when Nightspan becomes available. Signing up does not reserve a bag or create a payment, order or subscription.
Give the night the attention you have been saving for everything else.
You have made room for the work. The errands. The things other people need from you.
Now make room for the evening you would like to have, and the tomorrow you keep hoping for. A conversation you can give your attention. Plans you still feel like keeping. A little time that belongs to you.
Nightspan starts with the full 3 grams of free-form glycine examined in human sleep research, with magnesium bisglycinate, L-theanine, standardized saffron and zinc alongside it. Five named, measured ingredients. One melatonin-free powder to bring into your evening.
Your introduction brings together a 30-serving bag of Nightspan and The Night Before for $49. Regular renewals are $53 every 30 days until canceled. Keep the routine going, and every fourth paid shipment is just $43.80. Prefer to decide on replenishment yourself? One bag is $73, paid once.
The introductory subscription is for a new customer's first single-bag shipment only, once per customer; the guide is included only with that shipment. The offer cannot be combined with other discounts. Standard U.S. shipping is included; applicable tax is extra. Orders and enrollment are not open yet.
Give your evening a place on the list. Get launch updates, then compare the one-bag introduction and one-time option when Nightspan becomes available.