For most products, like those of the C4 iD Series and the most of the SuperHD family, which all contain stimulants to support energy, we recommend to not use the product continuously for more than 8 weeks. Over time, your body could build up a tolerance for ingredients that support energy.
- C4 products: Do not exceed 8 weeks.
- SuperHD / SuperHD Fire / SuperHD Ultimate (caps and powder): Do not exceed 8 weeks.
However, regarding the SuperHD Ultra, this products contains a licensed, patented ingredient with a study touting it's efficacy when used for up to 10 weeks. Therefore, we recommend to not use this products for more than 10 weeks.
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