Isopropylnorsynephrine
Isopropylnorsynephrine acts as a stimulant, increasing energy levels and metabolic rate.
What Does Isopropylnorsynephrine Do?
Isopropylnorsynephrine is a potent alkaloid and stimulant derived from bitter orange that acts as a powerful beta-3 adrenergic receptor agonist. Unlike standard synephrine, this modified version is significantly more effective at mobilizing stored body fat for use as fuel during intense training sessions.
- Enhanced Lipolysis: It triggers the breakdown of triglycerides into free fatty acids, allowing your body to burn fat more efficiently during exercise.
- Sustained Energy Surge: It provides a "cleaner" energy boost than high-dose caffeine, often preventing the mid-workout crash associated with heavy stimulants.
- Increased Metabolic Rate: By stimulating the thermogenic process, it raises your resting energy expenditure, helping you burn more calories even after your workout ends.
- Improved Focus: It works synergistically with other stimulants to sharpen mental clarity and mind-muscle connection without excessive jitters.
Clinical vs. Gym Bro Dosing
| Tier | Dose | Notes |
|---|---|---|
| Threshold | 10mg | Subtle increase in body temperature and focus. |
| Clinical | 20mg | The gold standard for fat oxidation and energy. |
| Performance | 30mg | High-intensity boost for fasted cardio or heavy lifting. |
| Max Limit | 40mg | Upper limit; may cause significant heart rate spikes. |
Key Insight: Isopropylnorsynephrine is most effective when taken 30 minutes before training. Because it is a potent lipolytic agent, it performs exceptionally well during fasted cardio or high-volume metabolic conditioning where fat oxidation is a primary goal.
Side Effects & Warnings
- Increased Heart Rate: As a beta-agonist, it can cause palpitations or tachycardia, especially when stacked with high doses of caffeine or yohimbine.
- Elevated Blood Pressure: Users with pre-existing hypertension should exercise caution as it can cause temporary spikes in blood pressure.
- Mild Jitters: While smoother than caffeine, sensitive individuals may experience slight tremors or "the shakes" at doses exceeding 30mg.
- Gastrointestinal Distress: Taking this on a completely empty stomach may cause mild nausea in some users.
Contraindications: Do not combine with prescription MAOIs or other potent vasoconstrictors. Always start with a half-dose to assess your tolerance to this specific stimulant before moving to a full 20mg serving.
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