Blue Machine (Helen Czerski)

Marsoni

M251S

$12.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Blue Machine (Helen Czerski)WINNER OF THE 2024 WAINWRIGHT PRIZE FOR CONSERVATION FINANCIAL TIMES 2023 HIGHLIGHT 'Helen Czerski weaves together physics and biology, history and science, in a beautifully poetic way.' Professor Alice Roberts 'In Helen Czerski's hands, the mechanical becomes magical. An instant classic.' Tristan Gooley, author of How to Read Water 'Blue Machine is quite simply one of the best books I have ever read.' Dr George McGavin, zoologist, entomologist and

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For starters, Amazon is one of the few places that sells these fiber tablets, so I was pleased that they were affordable. I prefer the tablets over the powder because it’s just easier for me to use. Three tablets and you’re good to go for the day. The fiber supplement works well compared to others I have tried. It’s very gentle on your stomach. Worth it!

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Reviewed in the United States on April 7, 2026

Verified Purchase

James Boddy

Whiting, US

★★★★★ 5

Pill almost too big to swallow

Size: 84 Count (Pack of 1)

Huge pills

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Reviewed in the United States on May 11, 2026

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Koicutie

Draper, US

★★★★★ 5

Works well

Size: 84 Count (Pack of 1)

After having gastric bypass surgery, I needed a fiber supplement that was gentle on the digestive system. These are perfect. No bloating at all and they keep thing regular and moving along.

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Reviewed in the United States on May 10, 2026

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Keith D. Thompson Jr.

Chelsea, US

★★★★★ 4

CONVENIENT BUT MAY BE HARD FOR SOME TO SWALLOW

Size: 84 Count (Pack of 1)

I've tried lots of different types of fiber supplements. For convenience, this one is the best. A lot has been said about how large the pills are for swallowing, but I have bigger pills than these, and they go down fine. The issue is the shape of the pill. It's made not cylindrical, but with 4 faces with sharp corners. These make the pills tend to stick a bit on the way down. I would not recommend these pills for someone with swallowing difficulties. That being said, they do work.

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Reviewed in the United States on January 22, 2026

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Dick Snyder

Dallas, US

★★★★★ 5

As described

Size: 84 Count (Pack of 1)

No taste. Works well for me.

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Reviewed in the United States on February 17, 2026