Cheapest Kirkman Proprietary Blend on iHerb
Ranked by real cost per 100 mg of Kirkman Proprietary Blend — cheapest value first.
Prices updated Jul 25, 2026 · 12 products · Prices in USD
| # | Product | Dose | Price (USD) | Cost per 100 mg | |
|---|---|---|---|---|---|
| 1 |  | 1,200 mg | 42.37 | 0.039 | View on iHerb → |
| 2 |  | 620 mg | 48.75 | 0.087 | View on iHerb → |
| 3 |  | 705 mg | 30.75 | 0.132 | View on iHerb → |
| 4 |  | 1,300 mg | 53.50 | 0.137 | View on iHerb → |
| 5 |  | 605 mg | 67.50 | 0.149 | View on iHerb → |
| 6 |  | 135 mg | 50.40 | 0.207 | View on iHerb → |
| 7 |  | 375 mg | 94.50 | 0.210 | View on iHerb → |
| 8 |  | 810 mg | 64.00 | 0.263 | View on iHerb → |
| 9 |  | 121 mg | 42.90 | 0.394 | View on iHerb → |
| 10 |  | 250 mg | 86.00 | 0.573 | View on iHerb → |
| 11 |  | 50 mg | 44.00 | 0.978 | View on iHerb → |
| 12 |  | 20 mg | 41.25 | 2.28 | View on iHerb → |
- 1Cost per 100 mg 0.039
- Dose
- 1,200 mg
- Servings
- 90
- Price (USD)
- 42.37
- 2Cost per 100 mg 0.087
- Dose
- 620 mg
- Servings
- 90
- Price (USD)
- 48.75
- 3Cost per 100 mg 0.132
- Dose
- 705 mg
- Servings
- 33
- Price (USD)
- 30.75
- 4Cost per 100 mg 0.137
- Dose
- 1,300 mg
- Servings
- 30
- Price (USD)
- 53.50
- 5Cost per 100 mg 0.149
- Dose
- 605 mg
- Servings
- 75
- Price (USD)
- 67.50
- 6Cost per 100 mg 0.207
- Dose
- 135 mg
- Servings
- 180
- Price (USD)
- 50.40
- 7Cost per 100 mg 0.210
- Dose
- 375 mg
- Servings
- 120
- Price (USD)
- 94.50
- 8Cost per 100 mg 0.263
- Dose
- 810 mg
- Servings
- 30
- Price (USD)
- 64.00
- 9Cost per 100 mg 0.394
- Dose
- 121 mg
- Servings
- 90
- Price (USD)
- 42.90
- 10Cost per 100 mg 0.573
- Dose
- 250 mg
- Servings
- 60
- Price (USD)
- 86.00
- 11Cost per 100 mg 0.978
- Dose
- 50 mg
- Servings
- 90
- Price (USD)
- 44.00
- 12Cost per 100 mg 2.28
- Dose
- 20 mg
- Servings
- 90
- Price (USD)
- 41.25
How we rank Kirkman Proprietary Blend
Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.
Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.
Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.