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Certain ingredients have different densities, and by mixing these ingredients into a formula, it creates a unique capsule weight based on the finished blend density and what can fit into a capsule.
Certain ingredients can be sensitive to moisture (hydroscopic). Because of this, materials can clump on machines, become sticky, and take longer to produce with higher loss rate of materials, too.
When choosing colored capsules, stock colors use artificial dyes. If natural colors are preferred, expect higher minimums, longer lead times, and a higher price. There may also be limitations to which colors can be used naturally.
Because of the natural formula in colors, a finished capsule can sometimes take on a different shade. This is common with dark ingredients in a lighter capsule.
When using natural ingredients like botanicals, color profiles tend to vary from lot to lot due to a variety of factors. (i.e. region, climate, harvest, etc.)
Sometimes the formulation is better suited in a capsule, but most commonly, capsules are easier to swallow and generally dissolve faster than tablets when ingested. They also allow for far less other ingredients.
Space is typically the reason for this. Because there is a limited amount of space in a capsule, larger formulations sometimes are more practical in a tablet. Calcium is a perfect example of this.
This varies from formula to formula. Some formulations do not fit during the encapsulation process, but after settling occurs over time, the capsules then appear to have extra space.
Some ingredients used in your formulation make an unpleasant or strong odor unavoidable. Make sure you speak with one of our experienced representative about your formulation ahead of time if this is something that concerns you.
Regardless of whether you're new to the industry, looking for a new capsule manufacturer or seeking to expand your product line, NutraScience Labs can help you.
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