Page 1 - Reviews - Source Naturals, Guarana Energizer™, 200 Tablets - iHerb

Customer Ratings & Reviews

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4.7
Based on 2,471 ratings
1,989
290
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40
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What customers say
Customers highly praise the product for its quality ingredients and noticeable benefits. Many users report increased energy levels, improved mood, and enhanced cognitive function after taking it. The product is often used as a coffee alternative due to its energizing effects without the crash associated with caffeine. It is particularly favored by those with sensitive stomachs or who are undergoing chemotherapy. The tablet form is appreciated for being easy to swallow and having no aftertaste. Regular users have incorporated it into their daily routines, citing consistent positive experiences over many years. Fast shipping and reliable delivery from iHerb are also frequently mentioned positives. However, a few customers noted concerns about potential overdosage and lack of noticeable effects.
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Min
Posted on Apr 13, 2026
Vietnam
92
52
0
203
Source Naturals, Guarana Energizer (200 Tablets)
Verified purchase
Source Naturals, Guarana Energizer (200 Tablets): Effective quality energy supplement for the price. The composition features guarana ingredients for natural alertness benefits. Use one tablet as a dosage; the taste is slightly earthy. The package size is generous for 200 tablets. Highly recommended to include in your diet for a natural, healthy energy boost.
THEPROTEINJUNKIE
Posted on Feb 3, 2025
Canada
43
0
0
41
THE PROTEIN JUNKIE : GUARANA ENERGIZER
Verified purchase
Who doesn't love a boost of energy!? This guarans is a perfect pick-me-up on the go first thing in the morning or pre-workout. I drink a lot of coffee (therefore caffeine) but still use and love this. It doesn't give me any nasty jitters or shakes and no bad burps or heartburn like some other pre-workout supplements. It feels natural and clean. The size of the tablet is decent and slips right down, and I have even chopped it in two to lessen the dosage when I want - no weird taste. Just one chug of water or your fav drink, and away you go! I realize there are caffeine tabs as well, but I prefer this guarana. It just feels cleaner. Real review, real energy! Enjoy. In iron and peace, THE PROTEIN JUNKIE
iHerbCustomer
Silver
Posted on Sep 1, 2026
Israel
188
16
9
57
Must have
Verified purchase
This supplements really help me to wake up without side effects, every day I took one capsule = easy dosage and it's working
iHerb customer
Silver
Posted on Sep 23, 2025
Australia
161
0
0
11
Guarana
Verified purchase
⸻ Source Naturals Guarana Energizer 900 mg is a vegetarian-friendly supplement designed to support energy levels and alertness. Each tablet contains 900 mg of guarana seed extract, standardized to 22% caffeine, providing approximately 200 mg of caffeine per tablet. Users have reported experiencing a sustained energy boost without the jitteriness often associated with coffee. The tablets are compact and easy to swallow, making them convenient for on-the-go use. However, it’s advisable to start with a lower dose to assess individual tolerance, as the caffeine content can be potent for some individuals. Quality is okay and ingredients are okay. Size is okay
iHerb customer
Silver
Posted on Nov 19, 2025
Georgia
142
0
0
8
Verified purchase
Great energy booster! Source Naturals Guarana Energizer has excellent quality and clean ingredients. The taste is pleasant, and the size of the capsules is convenient. I’ve noticed real benefits in energy and focus—definitely a solid supplement for daily use.
GoodiHerbProCustomer
Posted on Sep 15, 2025
Malaysia
58
6
442
92
Verified purchase
Vegetarian-friendly formula in convenient tablet form.RetryClaude can make mistakes. Natural energy supplement containing guarana seed extract, a potent source of caffeine that releases more gradually than coffee. Provides sustained mental alertness and physical energy without severe crashes. Contains additional B vitamins to support energy
iHerb customer
Posted on Sep 14, 2025
Philippines
10
0
1
1
Guarana Energizer
Verified purchase
thank you very much it work well ,helps my mood a lot,increase my energy brain sharper, it help me calmer very beneficial to my health.
iHerb customer
Silver
Posted on Jul 12, 2024
United States
174
11
1
94
Daily go-to supplement
Verified purchase
This Guarana works really well for me... No dependency, just clean energy and focus. I generally take about 60-90 minutes after I wake up in the morning, and the energy comes quickly. It keeps me focused through the afternoon. Sometimes for an extra kick, I'll take a capsule and a half, but usually, I'm just taking one. I do not experience a crash and no jitters like pre-workouts and other stimulants. Can't recommend this enough!
1fb49d69-7db5-4b96-ab48-e3d999751480
iHerb customer
Posted on Jun 8, 2024
India
4
4
0
1
A good concentration and energy boost
Verified purchase
Come at my sight while searching for for ADHD. i tried it size and quality of the was ok . i take one dosage in the morning it gives benefit in concentration and energy boost for 4 to 6 hours. it helped me in gyp while studying it was no that helpful that i was accepting it to be . it has a natural taste of ingredient. it also depend if you are used other concentration booster like use of caffeine or others.
3830b06c-ddb4-4a96-9653-8fcb3027d894
Tanya
Posted on Dec 15, 2023
Ireland
69
21
0
126
Verified purchase
🍃Advantages: ✅️Quality: Source Naturals Guarana Energizer lives up to a high-quality standard, using natural guarana herb for its energizing benefits. ✅️Ingredient: The key ingredient, guarana, has a historical use as an energizer . A natural and time-tested choice for an energy boost. ✅️Age: Great for adults of various age groups looking for a natural way to boost energy levels. ✅️Package: Convenient tablet form makes it easy to incorporate into daily routines, and the secure packaging ensures product integrity. ✅️Benefit: The energizing effect of guarana is a big plus, helping combat fatigue and reduce appetite for weight loss. ❗️Disadvantages: ☑️Composition: Contains additional ingredients like dibasic calcium phosphate and sorbitol, which might be a concern for those with specific dietary preferences. ☑️Improvement: Effectiveness can vary between individuals, and some users might not experience the expected improvement in energy levels.
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