| Price | $4–$8 per dose | $6–$10 | $5 |
| FDA approval | Yes | Yes | Yes |
| Shipping time | 2–5 business days | 3–5 business days | Within 4 business days |
| Consultation price | Free | First one is free, then $15 | Varies |
| Doses available | 25, 50, or 100 mg | 25, 50, 100 mg | 25, 50, 100 mg |
