Slow flushing toilets. WsDJ one gave me the name of a cleaner

[Paper Roses]

for sewer pipes that was great. I need to use it again and cannot remember the name of the stuff. Available at Home Depot. You mix the product with water, add to bowl, flush and do not use for 6 hours. Anyone remember the name of this product?

I know there is a need to use it again, the flush is too slow and the water starts to rise to the top of the toilet before going out with a big glug. Just as it did before.
Help please!