Page 1 - Reviews - Natrol, 5-HTP, Time Release, 100 mg, 45 tablets - iHerb
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Customer Ratings & Reviews

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4.6
Based on 2,307 ratings
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306
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English (UK)
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Irena
Silver
Posted on Nov 7, 2025
Ukraine
120
9
1
55
Verified Purchase
5-HTP is taken to improve mood and sleep, combat stress, and reduce appetite due to its ability to increase serotonin levels in the brain. This amino acid is a precursor to serotonin, the “happiness hormone,” as well as melatonin, the sleep hormone, which explains its positive effect on mental state and quality of rest. It normalizes sleep and wakefulness cycles, makes sleep deeper and more restful, which is especially useful for insomnia.
Auto-translated from Ukrainian
iHerbCustomer
Gold
Posted on Apr 16, 2026
Israel
1,130
10
15
576
excellent
Verified Purchase
An excellent supplement for increasing serotonin in the body, to support a normal mood, every time I try a supplement from a different company. This time I chose a supplement that acts as a controlled-release tablet throughout the day in the body. The tablet is absorbed slowly throughout the day - Benefits - A natural supplement for reducing stress and improving mood. I like to have a box at home regularly, use occasionally as needed.
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iHerbCustomer
Silver
Posted on Oct 5, 2025
Israel
181
16
9
54
They work great
Verified Purchase
It's great support for stress and antidepressant withdrawal. My mood has improved, and my sleep has returned to normal. It's a small package, but it's a full course. I'll definitely order more because you feel the results immediately, literally within a few days.
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iHerb Customer
Posted on Jul 21, 2025
France
6
4
0
2
An excellent natural assistant for sleep and mood
Verified Purchase
I have been taking 5-HTP from Natrol for several weeks now - the effect is noticeable almost immediately. The quality of sleep has improved, it has become easier to fall asleep, I wake up rested. I have also noticed a positive effect on my mood - there are fewer anxious thoughts and stress. Convenient form - tablets with slow release, which helps to maintain a stable effect during the night. The composition is natural, without unnecessary additives. The tablet size is average, easy to swallow. I recommend it to those who are looking for gentle support for the nervous system and sleep without addiction.
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2b17f8e5-e764-4cad-b496-2ffc1276c2fd
VladimirUAWIN
Silver
Posted on Apr 3, 2026
Ukraine
227
0
0
58
high-quality 5-HTP
Verified Purchase
5-HTP (5-hydroxytryptophan) is an amino acid that serves as a precursor to serotonin (the "happiness hormone") and melatonin (the "sleep hormone"). Its main benefits include improving mood, reducing anxiety, improving sleep quality, suppressing appetite, and helping with migraines.
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Mila
Gold
Posted on Nov 25, 2025
Russia
989
0
1
17
Verified Purchase
A great option for maintaining health! Good dosage and a quality brand. I recommend it.
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AgathaDoux
Gold
Posted on Nov 7, 2025
Israel
394
0
0
44
Verified Purchase
quality, ingredients, taste, size, package, composition, everything is great. recommend
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iHerb Customer
Posted on Aug 16, 2025
Azerbaijan
33
0
0
1
Verified Purchase
I have been taking 5-HTP from Natrol for several weeks now - the effect is noticeable almost immediately. The quality of sleep has improved, it has become easier to fall asleep, I wake up rested. I have also noticed a positive effect on my mood - there are fewer anxious thoughts and stress. Convenient form - tablets with a slow
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Eugenia
Gold
Posted on Aug 13, 2025
Ukraine
774
0
1
35
Up to the mood
Verified Purchase
Why 5-HTP is used: Increases serotonin levels - helps with low mood, apathy, anxiety, chronic fatigue syndrome. Improves sleep - due to the fact that serotonin is converted into melatonin, 5-HTP can normalize the sleep-wake cycle. Appetite control - helps reduce cravings for sweets and overeating, which is useful for weight loss. Reduces PMS symptoms - reduces irritability, mood swings and pain. Support for fibromyalgia and migraines - due to the effect on neurotransmitters. ⚠️ Important: Do not combine with antidepressants (especially SSRIs) without a doctor - there is a risk of serotonin syndrome. It is better to take in the evening or closer to bedtime if the goal is relaxation and sleep restoration.
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iHerb Customer
Posted on May 26, 2026
Japan
22
0
0
2
I like time-release releases.
Verified Purchase
I drink this on gloomy mornings. It's a lifesaver on days when I'm feeling down and even going out seems like a chore. I've repurchased it because I feel it's effective. It works especially well when taken with activated vitamin B6. It's a time-release formula, so it's gentle.
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