✔ In T-hero®’s dosing (around 300–600mg), a 2023 International Journal of Medical and Pharmaceutical Research study noted muscle recovery perks, but no reliable T-spikes in healthy adults—aligning with a 2019 NIH review where only 24.8% of boosters (including ashwagandha-based) had supportive data, and 10.1% risked T-drops. Both variants rely on a handful of natural extracts with spotty backing for testosterone support, often at doses too low to matter.