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| Form | Bioavailability | Best For |
|---|---|---|
| Caffeine Anhydrous | High | Precise dosing — most concentrated form; common in supplements |
| Coffee | High | Natural source with additional polyphenols (chlorogenic acid) |
| Green Tea Caffeine | Moderate | Combined with EGCG for synergistic fat oxidation effects |
Bioavailability: High. Best for: Precise dosing — most concentrated form; common in supplements.
Bioavailability: High. Best for: Natural source with additional polyphenols (chlorogenic acid).
Bioavailability: Moderate. Best for: Combined with EGCG for synergistic fat oxidation effects.