How We Ranked These Products
Our rankings are based on comprehensive analysis of ingredients, clinical research support, user reviews, value for money, company reputation, and guarantee terms. PhenQ ranks #1 due to its patented a-Lacys Reset® formula and comprehensive approach to weight loss. Products were evaluated on their ability to support thermogenesis, appetite control, energy levels, and overall metabolic health.
7 Best OTC Phentermine Alternatives – Comparison Table
| # | Product | Reputation | Comments | Key Ingredients | Vegan/ Vegetarian Friendly |
Third-Party Testing |
Price & Promos |
Best Value for Money Offer |
Shipping & Availability |
Guarantees |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | PhenQ | Comprehensive weight loss formula with patented a-Lacys Reset® for enhanced metabolism and thermogenesis | a-Lacys Reset®, Capsimax Powder, Chromium Picolinate, Caffeine, Nopal Cactus, L-Carnitine Fumarate, InnoSlim®, B-Vitamins (B3, B6, B12), Iodine | Yes | Yes | 1 Bottle: $69.99 Multi-bottle deals available |
Buy 2 Get 1 Free: $139.99 ($46.66 per bottle) | Free shipping worldwide | 60-day money-back guarantee | |
| 2 | Phen24 | Unique 24-hour weight loss system with separate day and night formulas for round-the-clock fat burning | Day: Ashwagandha, Caffeine, Guarana, L-Phenylalanine, Cayenne, Iodine, Zinc, Copper Night: L-Arginine, L-Lysine, L-Theanine, 5-HTP, Chromium, B-Vitamins |
Not specified | Yes | 1 Box: $74.99 Bundle discounts |
3-Month Supply: $224.97 ($74.99 per box) | Free shipping on select orders | 60-day money-back guarantee | |
| 3 | HourGlass Fit | Premium women’s fat burner with 3g glucomannan for superior appetite control and mood support | Konjac Root Extract (3000mg glucomannan), Cayenne Pepper Extract (Capsimax®), Black Pepper Extract (BioPerine®), 5-HTP, Vitamin B6, B12, B2, Chromium, Zinc | Yes | Yes | 1 Bottle: $75 Multi-buy savings |
3-Month Supply: $150 ($50 per bottle) | Worldwide shipping | 90-day money-back guarantee | |
| 4 | Instant Knockout Cut | Professional-grade fat burner originally developed for MMA fighters, now available to everyone | Glucomannan (1800mg), Green Tea Extract (500mg, 45% EGCG), Caffeine Anhydrous (300mg), L-Theanine, Cayenne Powder, Black Pepper Extract, Vitamins D3, B6, B12 | Yes | Yes | 1 Bottle: $65 Bulk discounts |
4-Month Supply: $195 ($48.75 per bottle) | Free US & UK shipping | 30-day money-back guarantee | |
| 5 | Lean Optimizer | Multi-pathway formula targeting thyroid, cortisol, leptin, and insulin for comprehensive metabolic support | Sensoril® Ashwagandha, Guggulsterones, 7-Keto® DHEA, African Mango, Meratrim®, LOWAT®, Green Tea Extract, 5-HTP, Chromium, Iodine, Biotin | Not specified | Not specified | 1 Bottle: $49.97 Subscribe & save options |
3-Month Supply: $119.91 ($39.97 per bottle) | US shipping available | 200-day money-back guarantee | |
| 6 | Burn-XT | Science-backed thermogenic with clinical doses of key ingredients for enhanced fat loss and energy | Acetyl-L-Carnitine HCl (700mg), Green Tea Extract (450mg, 98% polyphenols), Caffeine Anhydrous (270mg), Capsimax® Cayenne Pepper, BioPerine® Black Pepper | Yes | Yes | 1 Bottle: $29.99 Subscribe & save 10% |
2-Pack: $53.98 ($26.99 per bottle) | Amazon Prime eligible | 30-day return policy | |
| 7 | Old School Vintage Burn | Muscle-preserving fat burner with mood and focus enhancers, designed for maintaining lean mass while cutting | Green Tea Leaf Extract, Green Coffee Bean Extract, Raspberry Ketones, Olive Leaf Extract, Caffeine (150mg), Bacopa Leaf Extract, Garcinia Fruit Extract, Chrysin, Forskohlii Root Extract | Yes | Third-party tested | 1 Bottle: $49.99 Multi-bottle deals |
3-Pack: $119.97 ($39.99 per bottle) | Ships to most countries | Money-back guarantee |
How We Ranked These Products
Our rankings are based on comprehensive analysis of ingredients, clinical research support, user reviews,
value for money, company reputation, and guarantee terms. PhenQ ranks #1 due to its patented a-Lacys Reset®
formula and comprehensive approach to weight loss. Products were evaluated on their ability to support
thermogenesis, appetite control, energy levels, and overall metabolic health.