20 Best Melatonin Sr Side Effects [2024]

Are you looking for the best Melatonin Sr Side Effects? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling Melatonin Sr Side Effects.

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1 Klaire Labs Melatonin-SR - Sustained 'Time Release' Melatonin 2mg Capsules - Sleep Support for Men &... Klaire Labs Melatonin-SR - Sustained 'Time Release' Melatonin 2mg Capsules - Sleep Support for Men...
2 Carlyle Melatonin 12 mg Fast Dissolve 180 Tablets | Drug Free | Natural Berry Flavor | Vegetarian,... Carlyle Melatonin 12 mg Fast Dissolve 180 Tablets | Drug Free | Natural Berry Flavor |...
3 Goli Apple Cider Vinegar Gummy Vitamins - 60 Count - Vitamins B9 & B12, Gelatin-Free, Gluten-Free,... Goli Apple Cider Vinegar Gummy Vitamins - 60 Count - Vitamins B9 & B12, Gelatin-Free,...
4 Bronson Melatonin 12mg Fast Dissolve Nighttime Sleep Aid Support & Relaxation Support, 360... Bronson Melatonin 12mg Fast Dissolve Nighttime Sleep Aid Support & Relaxation Support, 360...
5 Dr. Wurtman’s Sleep Answer Delivers Time-Released, Low-Dose Melatonin That Helps You Fall Asleep,... Dr. Wurtman’s Sleep Answer Delivers Time-Released, Low-Dose Melatonin That Helps You Fall...
6 Proper Sleep + Restore - Natural Melatonin Sleep Aid to Support A Full Night of Restful Sleep - 60... Proper Sleep + Restore - Natural Melatonin Sleep Aid to Support A Full Night of Restful Sleep -...
7 Vitamatic Melatonin 30mg - with B6 & L-Theanine - 120 Fast Dissolve Tablets with Natural Berry... Vitamatic Melatonin 30mg - with B6 & L-Theanine - 120 Fast Dissolve Tablets with Natural Berry...
8 NOW Supplements, Melatonin 5 mg, Sustained Release, Formulated for a 4-Hour Release Period, 120... NOW Supplements, Melatonin 5 mg, Sustained Release, Formulated for a 4-Hour Release Period, 120...
9 Life Extension Melatonin 300 mcg – Sleep Supplement – For Restful Sleep, Immune Function,... Life Extension Melatonin 300 mcg – Sleep Supplement – For Restful Sleep, Immune Function,...
10 Designs for Health Time Release Melatonin - Melatonin SRT, 6mg Per Tablet, Sustained Release Sleep... Designs for Health Time Release Melatonin - Melatonin SRT, 6mg Per Tablet, Sustained Release...
11 Thorne Research - Melaton-3 - Melatonin Supplement (3 mg) to Promote Sleep and Relaxation - 60... Thorne Research - Melaton-3 - Melatonin Supplement (3 mg) to Promote Sleep and Relaxation - 60...
12 Kaged Muscle Sleep SR Sleep Aid with Stress Relief to Fall Asleep Faster and Stay Asleep Longer,... Kaged Muscle Sleep SR Sleep Aid with Stress Relief to Fall Asleep Faster and Stay Asleep Longer,...
13 Melatonin IR/XR Helps You Fall Asleep & Stay Asleep All Night Long with Immediate-Release &... Melatonin IR/XR Helps You Fall Asleep & Stay Asleep All Night Long with Immediate-Release &...
14 Klaire Labs Melatonin Lozenge - Fast-Dissolving, Quick Release 1 Milligram Melatonin Tablets for Men... Klaire Labs Melatonin Lozenge - Fast-Dissolving, Quick Release 1 Milligram Melatonin Tablets for...
15 Amazon Basic Care Sleep Aid Tablets, Doxylamine Succinate Tablets, 25 mg, Nighttime Sleep Aid to... Amazon Basic Care Sleep Aid Tablets, Doxylamine Succinate Tablets, 25 mg, Nighttime Sleep Aid to...
16 Zarbee's Kids Melatonin Gummy, Drug-Free & Effective Bedtime Childrens Sleep Aid Supplement, Natural... Zarbee's Kids Melatonin Gummy, Drug-Free & Effective Bedtime Childrens Sleep Aid Supplement,...
17 Thorne Research - Melaton-5 - Melatonin Supplement (5 mg) to Promote Sleep and Relaxation - 60... Thorne Research - Melaton-5 - Melatonin Supplement (5 mg) to Promote Sleep and Relaxation - 60...
18 Terra Origin Healthy Sleep Capsules, 60 Servings, with Melatonin, GABA, L-tryptophan, Valerian,... Terra Origin Healthy Sleep Capsules, 60 Servings, with Melatonin, GABA, L-tryptophan, Valerian,...
19 Natrol Melatonin Fast Dissolve Tablets, Helps You Fall Asleep Faster, Stay Asleep Longer, Easy to... Natrol Melatonin Fast Dissolve Tablets, Helps You Fall Asleep Faster, Stay Asleep Longer, Easy to...
20 Melatonin Capsules by Sundown, for Sound, Quality Sleep*, Vegetarian Herbal Blend, Non-GMOˆ, Free... Melatonin Capsules by Sundown, for Sound, Quality Sleep*, Vegetarian Herbal Blend, Non-GMOˆ,...
Bestseller No. 1
Klaire Labs Melatonin-SR - Sustained 'Time Release' Melatonin 2mg Capsules - Sleep Support for Men &...
  • Sustained-release melatonin designed to support restful sleep.*
  • Hypoallergenic* product with 2 mg of melatonin per vegetarian capsule.
  • Delivers melatonin slowly over several hours to maintain blood levels for a longer period of time.*
  • Free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, and soybeans. Contains no artificial...
  • Trusted by healthcare practitioners since 1969, Klaire Labs products are developed closely with physicians and are intended to be used as directed by...
SaleBestseller No. 2
Carlyle Melatonin 12 mg Fast Dissolve 180 Tablets | Drug Free | Natural Berry Flavor | Vegetarian,...
  • ULTRA SUPPORT: Carlyle Melatonin is delivered in convenient 12 mg fast dissolve tablets
  • OPTIMAL FORM: Fast-dissolve tablets deliver 12 mg of Melatonin with natural berry flavor
  • ROOTED IN WELLNESS: Carlyle provides premium, honest supplements in your pursuit to healthy living
  • CARLYLE MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF: Gluten, Yeast, Milk, Lactose, Artificial Flavor
Bestseller No. 3
Goli Apple Cider Vinegar Gummy Vitamins - 60 Count - Vitamins B9 & B12, Gelatin-Free, Gluten-Free,...
  • Vegan, Non-GMO, Gluten-free & Gelatin-free: Each bottle of Goli contains 60 delicious, vegan, non-gmo, gluten-free & gelatin-free Apple Cider Vinegar...
  • Made in the USA with locally and globally sourced ingredients. Goli Gummies are made in allergen-free, cGMP certified facilities in the United States...
  • Patented Formula, Essential Vitamins, Great Taste: Our patented formula contains essential Vitamins B9 and B12 to help support cellular energy...
  • Vitamin Angels: Goli is a proud supporter of Vitamin Angels
Bestseller No. 4
Bronson Melatonin 12mg Fast Dissolve Nighttime Sleep Aid Support & Relaxation Support, 360...
  • High-Potency Formula: Providing a potent 12 MG per vegetarian lozenge of high-quality Melatonin to help support a healthy night of sleep.* Bronson’s...
  • Fall Asleep Faster: Melatonin is a hormone naturally produced in our bodies that supports healthy sleep cycles, but its balance can easily be...
  • Regulates Sleep Patterns: Bronson’s Melatonin 12 MG Fast Dissolve Peppermint Lozenges help to establish normal sleep patterns and provide you a more...
  • cGMP Premium Standards: Every product manufactured by Bronson is put through a rigorous process to ensure purity, potency and integrity. Through our...
  • Trusted Since 1960: The pioneers of Bronson Vitamins were a group of pharmacists who witnessed the benefits of vitamins and mineral supplementation...
Bestseller No. 5
Dr. Wurtman’s Sleep Answer Delivers Time-Released, Low-Dose Melatonin That Helps You Fall Asleep,...
  • FALL ASLEEP FASTER EACH NIGHT. What makes Sleep Answer so unique is that its cutting-edge “capsule-in-capsule” technology delivers low dose...
  • SLEEP LONGER EACH NIGHT—WAKING REFRESHED, NEVER GROGGY! Research shows less than 1 mg of melatonin is the ideal dose for adults 50 and over, and is...
  • REDUCES RESTLESSNESS, TOSSING AND TURNING. This is a very common condition linked to low melatonin. There’s not enough melatonin telling your brain...
  • REDUCES NIGHTTIME WAKE UPS. And you go back to sleep quickly if you do wake.
  • DEVELOPED BY DR. RICHARD WURTMAN, ONE OF AMERICA'S LEADING NATURAL SLEEP EXPERTS. Distributed by Healthy Directions, known for its stringent quality...
Bestseller No. 6
Proper Sleep + Restore - Natural Melatonin Sleep Aid to Support A Full Night of Restful Sleep - 60...
  • NATURAL AND NON-HABIT FORMING: Our formulation is designed to work with your body's natural sleep cycle (circadian rhythm). Proper is not designed to...
  • SAFE, CLINICALLY-STUDIED INGREDIENTS Our herbal blend is non-habit-forming, safe to take long-term, and clinically-studied to work. It was created by...
  • EXTENDED-RELEASE MELATONIN - Our formula contains MicroActive (MA) extended-release (time-release) melatonin and tart cherry, a natural source of...
  • TRY RISK FREE - Sleep isn’t “one-size-fits-all”. Many see improvement the first night and full benefits after several weeks. If for any reason...
Bestseller No. 7
Vitamatic Melatonin 30mg - with B6 & L-Theanine - 120 Fast Dissolve Tablets with Natural Berry...
  • 100% drug free
  • Vitamin B6 for fast absorption of active nutrient
  • L-Theanine supports relaxation
  • Made in the USA - Free of Yeast, Soy, Corn, Wheat, Egg, Artificial Colors, Flavors & Preservatives
  • DIFFERENT FORM MELATONIN - Melatonin comes in many forms, including gummies, chocolates, capsules, chewable, drops, and liquid - Fast Dissolve is the...
SaleBestseller No. 8
NOW Supplements, Melatonin 5 mg, Sustained Release, Formulated for a 4-Hour Release Period, 120...
  • Healthy Sleep Cycle*
  • Gastrointestinal Support*
  • Non-GMO & Vegan
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our...
  • Packaged in the USA by a family owned and operated company since 1968
Bestseller No. 9
Life Extension Melatonin 300 mcg – Sleep Supplement – For Restful Sleep, Immune Function,...
  • SLEEP SOUNDLY – Melatonin promotes healthy sleep/wake patterns, encourages onset and quality of sleep, and fosters morning alertness and overall...
  • SUPPORTS WHOLE BODY HEALTH – Melatonin helps support circadian rhythms and immune function, promote cellular and DNA health, as well as helps...
  • WHAT IS MELATONIN? – Melatonin is a hormone derived from the amino acid tryptophan which increases the speed of falling asleep and adds to quality...
  • INGREDIENTS MATTER - Sourced using only the finest raw ingredients with the purity and potency your body deserves. This product is certified non-GMO...
  • LIVE YOUR HEALTHIEST LIFE - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the...
Bestseller No. 10
Designs for Health Time Release Melatonin - Melatonin SRT, 6mg Per Tablet, Sustained Release Sleep...
  • SUPPORT YOUR SLEEP - Melatonin is a hormone that is released from the pineal gland, a pea-sized endocrine gland located in the brain. One of...
  • SUSTAINED RELEASE TABLET - Melatonin SRT provides 6 mg melatonin in a sustained release tablet. *
  • IMPORTANT ANTIOXIDANT - Melatonin also supports healthy immune and stress responses and is an important antioxidant, which acts as an effective...
  • HIGHER STANDARDS. BETTER RESULTS - Designs for Health maintains a strict, no-compromises approach to quality raw material selection. We never cut...
  • OVER 50,000 DOCTORS AGREE - Designs for Health is the physician's choice for top quality professional strength supplements since 1989. Our "Science...
Bestseller No. 11
Thorne Research - Melaton-3 - Melatonin Supplement (3 mg) to Promote Sleep and Relaxation - 60...
  • Melatonin: Promotes restful sleep patterns*
  • Circadian Rhythms: Helps maintain normal circadian rhythms*
  • Jet Lag: Provides a benefit for shift workers and travelers with jet lag*
  • Free From: Every Thorne product is made with the purest possible ingredients - without gluten or other major allergens (eggs, tree nuts, peanuts)....
  • Thorne's commitment to integrity and science-backed products has helped us earn the trust of thousands of health-care professionals, U.S. National...
Bestseller No. 12
Kaged Muscle Sleep SR Sleep Aid with Stress Relief to Fall Asleep Faster and Stay Asleep Longer,...
  • FALL ASLEEP FASTER, STAY ASLEEP LONGER: Our sustained release MicroActive melatonin works up to 7 hours, releasing 40% in the first hour, then slowly...
  • STRESS RELIEF FOR DEEP RELAXATION: Sleep SR contains a unique combination of B6, folic acid, tryptophan and Lactium providing stress relief and...
  • PROMOTES CALM + FEELINGS OF HAPPINESS: Our sleep supplement helps your body convert tryptophan into serotonin, the neurotransmitter that promotes...
  • WAKE UP REFRESHED: Forget the groggy feeling from regular sleeping pills. Our sleep aid is formulated to rapidly improve the onset and length of sleep...
  • 100% MONEY-BACK GUARANTEE: Try Sleep SR sleep aid today, risk free. If you don’t agree that it provides the deepest, most restful sleep you’ve...
Bestseller No. 13
Melatonin IR/XR Helps You Fall Asleep & Stay Asleep All Night Long with Immediate-Release &...
  • PROMOTES UNINTERRUPTED SLEEP - Melatonin promotes healthy sleep/wake patterns and encourages the onset, duration and quality of sleep.
  • EXTENDED RELEASE FOR ALL NIGHT SUPPORT - Melatonin IR/XR contains 1.5 mg of MicroActive Melatonin, an innovative blend of immediate-and...
  • FAST ACTING - Taken about 30 minutes before bed, Melatonin IR/XR helps you fall asleep quickly and stay asleep all night long. Just one Melatonin...
  • INGREDIENTS MATTER - Sourced using only the finest raw ingredients with the purity and potency your body deserves. This product is certified non-GMO...
  • LIVE YOUR HEALTHIEST LIFE - For over 40 years, we’ve been developing advanced, effective formulas made with the highest standards and based on the...
Bestseller No. 14
Klaire Labs Melatonin Lozenge - Fast-Dissolving, Quick Release 1 Milligram Melatonin Tablets for Men...
  • Fast-dissolving 1 mg melatonin lozenge tablets.
  • Quick-release formulation is an excellent option for those who do not wish to swallow pills.
  • Sweetened with mannitol and natural flavors. Contains no artificial colors, flavors, or preservatives.
  • Hypoallergenic* product free of the following common allergens: milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, and soybeans....
  • Trusted by healthcare practitioners since 1969, Klaire Labs products are developed closely with physicians and are intended to be used as directed by...
Bestseller No. 15
Amazon Basic Care Sleep Aid Tablets, Doxylamine Succinate Tablets, 25 mg, Nighttime Sleep Aid to...
  • THE ACTIVE INGREDIENT in Amazon Basic Care Sleep Aid Tablets is doxylamine succinate 25 mg, a nighttime sleep aid which compares to the active...
  • FOCUS ON SLEEP: With a single one-tablet dose, Amazon Basic Care Sleep Aid Tablets with doxylamine succinate 25 mg as the active ingredient help...
  • TESTED & EFFECTIVE: Clinically tested and proven effective, doxylamine succinate 25 mg sleep aid tablets are for adults and children ages 12 years and...
  • NIGHTTIME SLEEP AID: With just one tablet per dose, Amazon Basic Care Sleep Aid Tablets, Doxylamine Succinate Tablets 25 mg help to reduce difficulty...
  • FALL ASLEEP: Sleep is important. One tablet per dose helps to reduce difficulty falling asleep. Gluten free
SaleBestseller No. 16
Zarbee's Kids Melatonin Gummy, Drug-Free & Effective Bedtime Childrens Sleep Aid Supplement, Natural...
  • SAFELY CATCH SOME Zzzs: Help your child’s occasional sleeplessness with our tasty, natural berry flavor, melatonin supplement; Each gummy contains 1...
  • NON-HABIT FORMING: Our drug-free, easy-to-chew, non-habit forming melatonin gummies work naturally with the body's sleep rhythm and help guide your...
  • INGREDIENTS INSPIRED BY NATURE: Sweetened with honey, our kids gummies are made from carefully selected ingredients inspired by nature —free of...
  • PEDIATRICIAN APPROVED: Zarbee’s was developed by father and pediatrician, Dr. Zak Zarbock. Zarbees is the #1 Pediatrician Recommended Sleep Support...
  • GET THE WHOLE HIVE Zzzing: Check out our adult sleep non-habit forming, melatonin supplements. *These statements have not been evaluated by the Food...
Bestseller No. 17
Thorne Research - Melaton-5 - Melatonin Supplement (5 mg) to Promote Sleep and Relaxation - 60...
  • Melatonin: Promotes restful sleep patterns*
  • Circadian Rhythms: Helps maintain normal circadian rhythms*
  • Jet Lag: Provides a benefit for shift workers and travelers with jet lag*
  • Also available in 3 mg capsules
  • Free From: Every Thorne product is made with the purest possible ingredients - without gluten or other major allergens (eggs, tree nuts, peanuts)....
Bestseller No. 18
Terra Origin Healthy Sleep Capsules, 60 Servings, with Melatonin, GABA, L-tryptophan, Valerian,...
  • 5 mg Melatonin Regulates light and dark receptors to control the body’s sleep-wake cycles* 150 mg L-Tryptophan Converts to 5-HTP in the body which...
  • 100 mg Passionflower Aerial Part Extract Lowers brain activity, reduces anxiety and promotes drowsiness and sleep* 100 mg Valerian Root Extract...
  • 100 mg Gamma Aminobutyric Acid Triggers relaxation, reduces stress, balances moods, provides pain relief and facilitates sleep* 60 mg Hops Flower...
  • 50 mg Chamomile Flower Extract Reduces anxiety and treats insomnia as a mild tranquilizer*
SaleBestseller No. 19
Natrol Melatonin Fast Dissolve Tablets, Helps You Fall Asleep Faster, Stay Asleep Longer, Easy to...
  • Get Enough Sleep: Sleep enhances immune defense and a lack of it can affect the immune system; Studies have shown how people who don't get enough...
  • Sleep Strengthens Your Immune System: Research has shown the importance of sleep in strengthening your immune system, improving mental sharpness,...
  • Drug Free: Natrol Melatonin is a nighttime sleep aid that assists with occasional sleeplessness; It is non-habit forming, so you can use it with...
  • Fast Dissolve Tablets: Natrol’s unique fast dissolve strawberry formula enables faster absorption that can be taken anytime, anywhere; No water...
  • Wellness Worldwide: Natrol is a leading U.S. Vitamin, Mineral and Supplement manufacturer helping people around the world improve beauty, sleep, mood,...
SaleBestseller No. 20
Melatonin Capsules by Sundown, for Sound, Quality Sleep*, Vegetarian Herbal Blend, Non-GMOˆ, Free...
  • Free of Dairy/Lactose, Gluten/Wheat, Artificial Colors and Flavors, Non GMO
  • Vegetarian capsules to suit your diet needs
  • Contains 5mgs of melatonin plus an herbal blend of chamomile, hops, valerian root, passion flower and taurine
  • DIRECTIONS: FOR ADULTS, TAKE ONE (1) VEGETARIAN CAPSULE DAILY AT BEDTIME AS MELATONIN MAY PRODUCE DROWSINESS
  • These statements have not been evaluated by the Food and Drug Administration This product is not intended to diagnose, treat, cure or prevent any...

Having trouble finding a great Melatonin Sr Side Effects?

This problem is well understood by us because we have gone through the entire Melatonin Sr Side Effects research process ourselves, which is why we have put together a comprehensive list of the best Melatonin Sr Side Effectss available in the market today.

After hours of searching and using all the models on the market, we have found the best Melatonin Sr Side Effects for 2023. See our ranking below!

How Do You Buy The Best Melatonin Sr Side Effects?

Do you get stressed out thinking about shopping for a great Melatonin Sr Side Effects? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching Melatonin Sr Side Effects, which is why we have assembled a comprehensive list of the greatest Melatonin Sr Side Effects available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Melatonin Sr Side Effects that you consider buying. Your questions might include the following:

  • Is it worth buying an Melatonin Sr Side Effects?
  • What benefits are there with buying an Melatonin Sr Side Effects?
  • What factors deserve consideration when shopping for an effective Melatonin Sr Side Effects?
  • Why is it crucial to invest in any Melatonin Sr Side Effects, much less the best one?
  • Which Melatonin Sr Side Effects are good in the current market?
  • Where can you find information like this about Melatonin Sr Side Effects?

We’re convinced that you likely have far more questions than just these regarding Melatonin Sr Side Effects, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Melatonin Sr Side Effects, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Melatonin Sr Side Effects. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an Melatonin Sr Side Effects buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Melatonin Sr Side Effects currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of Melatonin Sr Side Effects has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an Melatonin Sr Side Effects?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your Melatonin Sr Side Effects.
  5. Customer Ratings: Number ratings grade Melatonin Sr Side Effects objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Melatonin Sr Side Effects.
  7. Product Quality: You don’t always get what you pay for with an Melatonin Sr Side Effects, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an Melatonin Sr Side Effects is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining Melatonin Sr Side Effects information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Melatonin Sr Side Effects is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

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FAQ:

Q: What are the bad effects of melatonin?

A: What are the negative effects of melatonin? Melatonin has been used safely for up to 2 years in some people. However, it can cause some side effects including headache, short-term feelings of depression, daytime sleepiness, dizziness, stomach cramps, and irritability. Do not drive or use machinery for four to five hours after taking melatonin.

Q: Are there any negative affects on taking melatonin?

A: Other common side effects of melatonin include: Headache; Dizziness; Nausea; Irritability; Stomach Cramps; Melatonin Supplements and Hormonal Changes. For women who are trying to get pregnant, nursing, and presently pregnant should not take melatonin supplements. I repeat, DO NOT TAKE MELATONIN SUPPLEMENTS. Melatonin can cause changes to the progesterone and luteinizing hormones, which play big roles in women.

Q: How much melatonin is bad for You?

A: The first sign that you’ve taken too much melatonin is that you’ll continue feeling its soporific effects the following day. You may feel especially drowsy or groggy. Doses of 10 milligrams or higher can cause side effects like drowsiness and headache 10. Other symptoms of melatonin overdose 11 include:

Q: Why does melatonin cause rapid weight gain?

A: Why does melatonin cause rapid weight gain? Melatonin doesn’t cause weight gain. Our weight is always supported by the calories in/calories out equation. In other words, you gain weight if you eat more calories than you burn, you lose weight if you eat less calories than you burn, and you maintain if you eat about the same amount of calories as you burn.