As your placenta has been dehydrated for encapsulation, you must be careful not to place the capsules in a high humidity environment such as a refrigerator. Your average refrigerator can have a humidity content of 70-95%. This amount tells you about how much moisture the air can hold relative to the temperature. Most perishable foods will do well at 80-85% humidity, but fruits and vegetables need 90-95%, which is why there are normally separate produce bins that restrict airflow and allow the percentage to increase. Freezers have an average of 30-35% humidity. Storing your capsules in the fridge will chill them. What happens is that when you retrieve them from the refrigerator into a warmer environment, condensation forms on the capsules which may damage them.
For the first 6 weeks you will want to store your capsules in a dark, cool cabinet, like a spice cabinet or medicine cabinet. When there is no moisture inside of the capsules, there cannot be bacteria, mold or spore growth. A precaution you can take is to not leave the lid of your capsule bottles off for extended periods of time. After 6 weeks, if you notice that there are still capsules left, you can transfer them to the freezer for long term preservation. The capsules will need to come out of the bottle and go into a ziploc bag. If you leave them in the glass bottle, you can run into condensation issues again. By transferring them to a simple plastic bag, you are eliminating the possible problem with condensation. On average, placenta capsules have a 2 year shelf life. If stored properly, you are not worried about them becoming rancid. After 2 years their nutritional and hormonal quality greatly decreases.