B7 Supplement Guide
Evidence-based information on B7 benefits, dosage, safety, and food sources — sourced from NIH, FDA, and PubMed.
Our assessment
The evidence shows that B7 (biotin) is a vitamin that supports your body's ability to process sugar. Our assessment: this supplement is generally safe, but you need to be aware of a critical interaction with lab tests NIH ODS ↗.
How it works
Think of biotin as a helper for your metabolism — it improves glucose uptake and insulin signaling, which helps your cells use sugar for energy NIH ODS ↗.
Safety profile
Biotin has not been shown to cause any harm NIH ODS ↗. However, supplements that contain biotin above recommended amounts may cause false results in some lab tests, including those that measure levels of certain hormones, like thyroid hormone NIH ODS ↗. Also, treatment for at least 1 year with antiseizure medications may affect your biotin levels, and biotin may interact with certain medications NIH ODS ↗. Data not available on FDA adverse event reports for this specific product.
Our recommendation
If you take biotin supplements, tell your doctor before any blood tests. This is especially important for thyroid tests. The data confirms that biotin is safe, but the lab test interference is a real concern you must manage NIH ODS ↗.
AI-assisted analysis based on NIH ODS, FDA, and PubMed data. Citations are linked to original sources.
Recommended Dosage
| Life Stage | Recommended Amount |
|---|---|
| Birth to 6 months | 5 mcg |
| Infants 7–12 months | 6 mcg |
| Children 1–3 years | 8 mcg |
| Children 4–8 years | 12 mcg |
| Children 9–13 years | 20 mcg |
| Teens 14–18 years | 25 mcg |
| Adults 19+ years | 30 mcg |
| Pregnant teens and women | 30 mcg |
| Breastfeeding teens and women | 35 mcg |
Source: National Academies of Sciences, Engineering, and Medicine. Always consult your healthcare provider for personalized dosage recommendations.
Drug Interactions
Yes, some medications you take may affect your biotin levels, and biotin may interact with certain medications. For example, treatment for at least 1 year with antiseizure medications (used to treat epilepsy ) can significantly lower biotin levels. Tell your doctor, pharmacist , and other health care providers about any dietary supplements and prescription or over-the-counter medicines you take. They can tell you if the dietary supplements might interact with your medicines or laboratory tests , or if the medicines might interfere with how your body absorbs , uses, or breaks down nutrients such as biotin.
Check All InteractionsFood Sources
Many foods contain some biotin. You can get recommended amounts of biotin by eating a variety of foods, including the following: Meat, fish, eggs, and organ meats (such as liver ) Seeds and nuts Certain vegetables (such as sweet potatoes, spinach, and broccoli)
Complete food source guideHealth Goals This Supplement Supports
Frequently Asked Questions
How much B7 should I take daily?
Refer to the Recommended Dosage table above. Individual needs vary by age, gender, and health status. Always follow the dosage on your supplement label and consult your healthcare provider.
What are the side effects of B7?
Biotin has not been shown to cause any harm. However, supplements that contain biotin above recommended amounts may cause false results in some lab tests, including those that measure levels of certain hormones , like thyroid hormone.
Can I get enough B7 from food alone?
Many foods contain some biotin. You can get recommended amounts of biotin by eating a variety of foods, including the following: Meat, fish, eggs, and organ meats (such as liver ) Seeds and nuts Certain vegetables (such as sweet potatoes, spinach, and broccoli)
Does B7 interact with medications?
Yes, some medications you take may affect your biotin levels, and biotin may interact with certain medications. For example, treatment for at least 1 year with antiseizure medications (used to treat epilepsy ) can significantly lower biotin levels. Tell your doctor, pharmacist , and other health car