Ephedrine

Ephedrine is a 5.0–5.5/10 fit for people considering body composition, energy, respiratory, endurance cardio, with the strongest case in the populations already represented by the evidence rather than broad wellness use. Shekelle 2003 and Shekelle 2003 give the report its main anchors. The benefits are context-dependent and the evidence still leaves responder, dose, and long-term questions open. Ephedrine makes the most sense when the target is concrete, such as a lab marker, symptom pattern, training limitation, or recovery bottleneck. It makes less sense as a background habit taken on faith. In practice, treat Ephedrine as a tracked experiment: define the outcome first, watch for tradeoffs, and let the response decide whether it earns a place.

✅ Best for: Time-bound (4-8 week) cutting protocols in screened adults without cardiovascular risk factors, MAOI/SSRI/TCA exposure, hyperthyroidism, BPH, narrow-angle glaucoma, seizure history, or pregnancy. Pharmaceutical-grade ephedrine HCl behind the pharmacy counter, never gray-market herbal ephedra. Anesthesiologists using ephedrine sulfate IV for spinal-anesthesia hypotension under medical supervision. Adults with mild bronchospasm without access to beta-2 selective inhalers. The narrow indication window is deliberate.

❌ Avoid if: You have any history of coronary artery disease, arrhythmia, hypertension, stroke, heart failure, or cardiomyopathy. You take MAOIs (absolute contraindication), SSRIs, SNRIs, TCAs, beta-blockers, halothane anesthesia, theophylline, or linezolid. You have hyperthyroidism, pheochromocytoma, BPH, narrow-angle glaucoma, diabetes with autonomic neuropathy, anxiety disorder, panic disorder, or a seizure history. You are pregnant or breastfeeding. You exercise in heat above 80°F. You are over 65 or under 18. You have a history of substance use disorder. You can access GLP-1 agonists, modafinil, or beta-2 inhalers as alternatives for the indication you were considering ephedrine for.