Cupric Oxide

Cupric Oxide carries a caution rating in supplements. While it is widely used in the industry, there are some considerations consumers should be aware of. This doesn't necessarily mean it's dangerous, but rather that certain populations (such as pregnant women, children, or people with specific health conditions) may want to exercise extra care. Cupric oxide has poor bioavailability and may cause gastrointestinal irritation. In GoodSupp's database, 18 products contain this ingredient. Consult your healthcare provider if you have specific concerns.

Cupric oxide is an inorganic compound of copper and oxygen. It appears in 18 products in the GoodSupp database.

Cupric Oxide is synthetically produced, meaning it is manufactured through chemical processes rather than directly extracted from natural sources. Synthetic ingredients are extremely common in supplements and are not inherently less safe than natural alternatives. In many cases, synthetic production allows for higher purity and more consistent quality. The FDA regulates both natural and synthetic supplement ingredients under the same safety standards. GoodSupp rates ingredients based on their actual safety data regardless of whether they're natural or synthetic.