Page 1 - Reviews - Left Coast Performance, Bovine Thyroid With Beef Liver, 60 Capsules - 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 221 ratings
182
19
17
2
1
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What customers say
Customer reviews (137)
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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Reviews from United Kingdom
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English (UK)
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herbogid
Silver
Posted on 19/11/2025
Latvia
299
11
17
341
A useful supplement.
Verified Purchase
A brand specializing in natural nutrition products. This high-quality thyroid and liver supplement from grass-fed cattle. May help boost energy. The ingredients are free of unnecessary fillers. The capsules are small and have a distinctive flavor.
Auto-translated from Russian
iHerb Customer
Posted on 10/02/2026
Kazakhstan
7
0
0
0
Verified Purchase
The quality is good, the ingredients are top-notch, the taste is good, the use is very frequent, the size is good and not too big, the packaging is excellent, the benefits are top-notch, the age is good, the supplements are tooooooooooopy, the dosage is super, the frequency is top-notch, the health improvements are good, the sleep is excellent, the action of the drug is excellent, overall the product is very high-quality and good.
Auto-translated from Russian
Lina
Gold
Posted on 2/08/2026
Germany
358
0
0
83
Verified Purchase
Excellent! You immediately feel more energy and zest for life. I highly recommend it.
Auto-translated from German
iHerb Customer
Posted on 25/01/2026
Romania
5
5
0
2
Very Good
Verified Purchase
Its hard to find thyroid extract grass fed also packaged with liver, very good product
Auto-translated from English
9799f5c4-c493-4fca-ba4f-227931f09381
iHerb Customer
Posted on 15/07/2026
Brazil
1
0
0
0
Great, I recommend it. Good.
Verified Purchase
Excellent product, great, I highly recommend it. Delivery takes a while, but the product is of high quality. I highly recommend it. Excellent ingredients, adequate size, right dose, high benefit, no taste, I really liked it, top of the line.
Auto-translated from Portuguese
iHerb Customer
Posted on 19/06/2026
Spain
17
0
0
0
Very good product, quality, capsule size is standard.
Verified Purchase
We ordered this product for the first time, our family really liked it, my wife said that this composition is for her age. Everything is good, I recommend it.
Auto-translated from Ukrainian
iHerb Customer
Posted on 9/04/2026
Germany
1
0
0
0
deer
Verified Purchase
Does it really come from the USA? Then it will be delivered to Germany very quickly. I'm curious to see how my body reacts to the supplement.
Auto-translated from German
sofiya
Silver
Posted on 22/11/2025
Azerbaijan
199
0
1
35
Verified Purchase
iHerb strives to be as accurate as possible in the images and information about its products. However, some changes made by manufacturers to packaging or ingredient lists may take some time before they are published on the website. Please keep in mind that even though product packaging may occasionally change, this does not affect the quality and freshness of the products. We recommend that you carefully read the information on the packaging, warnings, and directions for use of products before using them and not rely solely on the information provided on the iHerb website. Please note that some product descriptions on our website are machine translated. This is done solely for your convenience. All such translations will be replaced by those performed by our linguists as soon as possible. taste . size. benefits. age. supplement. frequency. dosage. improvement. protein. training. energy. muscles. composition diet. health. herbs. problem. iHerb strives to be as accurate as possible in the images and information about its products. However, some changes made by manufacturers to the packaging or ingredient list may take some time before they are published on the website. Please be aware that even though product packaging may change from time to time, this does not affect the quality and freshness of the products. We recommend that you carefully read all packaging, warnings, and directions for use of any products before use, and not solely rely on the information provided on the iHerb website. Please note that some product descriptions on our website are produced using machine translation. This is done solely for your convenience. All such translations will be replaced by those performed by our linguists as soon as possible. taste . size. benefits. age. supplement. frequency. dosage. improvement. protein. training. energy. muscles. composition diet. health. herbs. problem. immunity. hair. deficiency. prevention. antioxidant. skin. nails. collagen. sun. absorption. bones . calcium. compound. acidity. effectiveness. stomach. magnesium. joints. sleep. minerals. Hormones. Daily. Effectiveness. Result. Fish. Folic Acid. Niacin. Nervous System. Metabolism. Spirulina. Algae. Detox. Superfood. Smell. Thyroid. Adaptogen. Stress. Mood. Ayurvedic. Glucosamine. Cartilage. Connective Tissue. Inflammation. Heart. Cholesterol. Omega. Coenzyme Q10. Brain. Cardiovascular System. Symptom. Glutamine. Fitness. Serotonin. Appetite. Amino Acids. Sensitive. Oral Hygiene. Teeth. Delicate.
Auto-translated from Russian
iHerb Customer
Gold
Posted on 5/10/2025
Kazakhstan
14,605
0
0
2,472
Verified Purchase
Bovine thyroid and liver capsules—the dosage is calculated for small servings. The formula is simple, without lengthy supplement lists. Use with caution—if you have thyroid disease or hormonal imbalances, be sure to consult a doctor.
Auto-translated from Russian
iHerb Customer
Posted on 23/06/2026
Australia
2
0
0
7
Noticeable difference
Verified Purchase
This is a great product for a sluggish thyroid, it naturally contains T4 & T3. I was taking synthetic T3 which I ran into problems with. After switching to bovine thyroid I noticed a great improvement in my energy and brain function. At first the dose can feel a little intense, but within a week I was feeling an improvement. I will say this brand is very clean and I love it, although there are stocking issues sometimes. There has been times where it was out of stock for a couple months.
Auto-translated from English