No minimum, but we suggest at least 2 capsules, ( 1 for the 10 day follow up,) when first starting out on Worm Eradicator.
All of the images shown on the item descriptions are the size comparisons for the three different sizes available. (small , medium , and large.)
Click on words to select quantity.
Once you are ready to checkout continue to "pay with paypal" and you will be directed to the payment page which will give you the option to use any credit or debit card.