Page 1 - Reviews - Jigsaw Health, Activated B with SRT®, 120 Tablets - iHerb
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Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorised distributors.Show more
4.7
Based on 323 ratings
256
54
10
3
0
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What customers say
Customer reviews (81)
Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding food supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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English (UK)
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Ilonabitsaeva
Silver
Posted on Sep 5, 2026
United States
259
0
2
337
Excellent!
Verified Purchase
Very high‑quality additives. One of the best brands. Penetrates slowly and releases gradually. No aftertaste in the mouth. No burping. I recommend
Auto-translated from English
iHerbCustomer
Silver
Posted on Oct 24, 2025
Saudi Arabia
145
3
0
115
Vitamin with very high quality and manufacturing
Verified Purchase
Excellent quality, excellent ingredients, great quantity, enough for a long time. I ordered it for my brother because he has a B12 deficiency, and this type specifically is in the natural methylcobalamin formula. This formula is different from supplements in the Cyanocobalamin formula, which specifically is stressful for the liver. It needs to be broken down in order to turn into the natural formula, then the body absorbs it and benefits from it. I ordered it for my beloved brother so that his B12 levels can rise.
Auto-translated from Arabic
iHerb Customer
Posted on Aug 24, 2026
China
21
1
0
2
I love it! Great ingredients, slow release.
Verified Purchase
Sustained-release technology is crucial, and it's a perfect fit for various ingredients. The only drawback is that it's frequently out of stock.
Auto-translated from Chinese Simplified
iHerb Customer
Posted on Jun 26, 2026
China
32
0
0
1
Worth buying!
Verified Purchase
This slow-release B vitamin, which has been out of stock for a long time, contains patented ingredients and is in a high-grade form of B1. It does not absorb moisture when stored at room temperature, making it an excellent product!
Auto-translated from Chinese Simplified
iHerb Customer
Posted on May 30, 2026
Hong Kong
1
0
0
0
The best B-type buffer in history
Verified Purchase
This is a high-quality vitamin B supplement. The ingredients are all truly active, and the dosage is not too high, so it will not trigger toxicity. After taking it for a period of time, I felt that my body's energy improved.
Auto-translated from Chinese Traditional
akkoyu
Posted on Dec 13, 2023
Japan
64
3
4
807
Good for evening consumption or with high-fat meals
Verified Purchase
It feels second only to Aurora's Liposomal B. While this is purely my subjective assessment, if the absorption rate of Liposomal B is over 90%, this sustained-release B feels like it's 60%, and regular B (such as Life Extension) feels like it's around 40%. The sustained-release B is released gradually over a long period of time, reducing waste, while the active B is immediately available for metabolism without the need for conversion, reducing the burden on the body and ensuring effective results. I feel that sustained-release B is particularly well-suited to lipid metabolism, which takes time to digest. I highly recommend it for those who enjoy fatty foods or those on a keto diet. It's great for preventing skin irritation while providing continuous energy. The active ingredients reduce the metabolic burden on the liver, making it ideal for those who enjoy alcohol and have impaired liver function. Taking immediate-release B, like capsule-type B, at night increases metabolism and makes it difficult to fall asleep, but this slow-release B doesn't interfere with sleep. Even if you take it before bed after a late dinner, it doesn't affect your sleep, which is helpful. Its well-balanced formula makes it ideal as a base B supplement, and it can also be used as a standalone B supplement depending on your diet and physical condition. If you're on a high-protein, high-amino acid diet, we recommend adding B6, B12, and folic acid, and if you're experiencing severe fatigue or lack of energy, we recommend adding B1 or niacin.
Auto-translated from Japanese
iHerbCustomer
Silver
Posted on Oct 8, 2025
Belgium
195
2
0
4
Verified Purchase
Probably a good product, I love this brand, it's very important for the health of the whole body, I will buy it again without a doubt.
Auto-translated from Portuguese
iHerb Customer
Posted on Sep 22, 2025
Japan
7
2
0
89
When I tried to drink it for the first time in six months, it had oxidized and turned brown.
Verified Purchase
I bought it in February and was drinking it, but then I switched to a different B group and when I tried to drink this again, it turned a really brown color! Huh, it wasn't supposed to be this color?! I thought to myself and looked at other people's reviews. I'm going to throw it away, so I recommend finishing it quickly.
Auto-translated from Japanese
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iMina
Posted on Jul 22, 2025
Thailand
19
0
0
10
I've been using it for 2 years now!
Verified Purchase
I started taking this 2 years ago on a doctor's recommendation, and have been using it many times since. It's an active form, so it's easily absorbed by the body, and the fatigue I feel on days I take it is completely different from the fatigue I feel on days I don't. This is especially recommended for people who have dreams. If you take it until you no longer have dreams, the quality of your sleep will improve dramatically. It's a high-quality B complex that you can continue to take with peace of mind.
Auto-translated from Japanese
iHerbCustomer
Posted on Sep 9, 2026
Japan
36
0
0
4
High-quality vitamin B
Verified Purchase
I bought this because I wanted to supplement my vitamin B intake. I like that it's a sustained-release type, so I can get a gradual supply rather than taking a large dose all at once. The tablets are a little on the large side, but I personally have no problem swallowing them. I think it's a product that's easy to incorporate into your daily nutritional supplement routine.
Auto-translated from Japanese