B5 Supplement Guide
Evidence-based information on B5 benefits, dosage, safety, and food sources — sourced from NIH, FDA, and PubMed.
Our assessment
The evidence shows that B5 (pantothenic acid) is a safe and essential vitamin, but the specific claims about mitochondrial support and HPA axis modulation are based on its biological role rather than robust clinical trials for these specific uses NIH ODS ↗. For general health, you are likely getting enough from your diet.
How it works
Think of B5 as a cellular energy worker. It supports your body by enhancing mitochondrial efficiency and biogenesis, which helps with ATP production — your cells' main fuel source. It also plays a role in acetylcholine modulation and HPA axis modulation, which are important for nerve function and stress response NIH ODS ↗.
Safety profile
Pantothenic acid is safe, even at high doses. However, taking very high doses of pantothenic acid supplements (such as 10,000 mg per day) can cause an upset stomach and diarrhea NIH ODS ↗. Data on adverse event reports from the FDA is not available for this specific ingredient FDA FAERS ↗.
Our recommendation
For most people, a standard multivitamin provides adequate B5. There is no known RDA for pantothenic acid, and it is not known to interact with any medicines NIH ODS ↗. If you are considering high-dose supplementation, start with a low dose and be aware that taking very high doses (10,000 mg daily) can cause stomach upset and diarrhea 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 | 1.7 mg |
| Infants 7–12 months | 1.8 mg |
| Children 1–3 years | 2 mg |
| Children 4–8 years | 3 mg |
| Children 9–13 years | 4 mg |
| Teens 14–18 years | 5 mg |
| Adults 19 years and older | 5 mg |
| Pregnant teens and women | 6 mg |
| Breastfeeding teens and women | 7 mg |
Source: National Academies of Sciences, Engineering, and Medicine. Always consult your healthcare provider for personalized dosage recommendations.
Drug Interactions
Pantothenic acid is not known to interact or interfere with any medicines. 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 those dietary supplements might interact with your medicines or if the medicines might interfere with how your body absorbs , uses, or breaks down nutrients .
Check All InteractionsFood Sources
Pantothenic acid is naturally present in almost all foods. It is also added to some foods, including some breakfast cereals and beverages (such as energy drinks). You can get recommended amounts of pantothenic acid by eating a variety of foods, including the following: Beef, poultry , seafood, and organ meats Eggs and milk Vegetables such as mushrooms (especially shiitakes), avocados, potatoes, and broccoli Whole grains , such as whole wheat, brown rice, and oats Peanuts, sunflower seeds, and chickpeas
Complete food source guideHealth Goals This Supplement Supports
Frequently Asked Questions
How much B5 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 B5?
Pantothenic acid is safe, even at high doses . However, taking very high doses of pantothenic acid supplements (such as 10,000 mg per day) can cause an upset stomach and diarrhea.
Can I get enough B5 from food alone?
Pantothenic acid is naturally present in almost all foods. It is also added to some foods, including some breakfast cereals and beverages (such as energy drinks). You can get recommended amounts of pantothenic acid by eating a variety of foods, including the following: Beef, poultry , seafood, and o
Does B5 interact with medications?
Pantothenic acid is not known to interact or interfere with any medicines. 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 those dietary supplements might interact with your med