Contact

For corrections to factual content, feedback on the calculator, or partnership inquiries, use the form below. For technical issues (calculator bugs, broken links, rendering problems), the fastest route is to open an issue on the project's GitHub repository .

What I can't help with

I do not provide medical advice and cannot answer questions about dosing, protocols, or whether a particular compound is appropriate for you. Please consult a licensed healthcare provider for any medical question.

I do not sell peptides and cannot make vendor recommendations. Please do not email me asking where to source research chemicals.

What I genuinely want to hear about

Corrections to factual content are welcome. A wrong reported half-life, an outdated vial size, a mislabeled receptor target, a broken citation — if you're a researcher, clinician, or careful reader who spots an error, please include a published source if you have one handy and I will update promptly.

Feedback on the calculator UX — anything that was confusing, any edge case the warnings didn't catch, anything that could be clearer on mobile — is also very welcome.

About me

I'm Dennis Drenner, a former biologist and biohacker based in Medellín, Colombia. Read more on the about page.