Provided below is a recommended daily intake of B vitamins for adults (note that each individual might be different and this is a general guideline):

Vitamin Recommended Daily Intake (RDI)

• B1 (Thiamin) 1.1 mg for men, 0.8 mg for women
• B2 (Riboflavin) 1.3 mg for men, 1.1 mg for women
• B3 (Niacin) 16 mg for men, 14 mg for women
• B5 (Pantothenic Acid) 5 mg
• B6 (Pyridoxine) 1.3 mg for adults under 50, 1.7 mg for adults over 50
• B7 (Biotin) 30 mcg
• B9 (Folate or Folic Acid) 400 mcg
• B12 (Cobalamin) 2.4 mcg

Please note that these values represent the general recommendations for healthy adults. Individual needs may vary based on factors such as age, sex, pregnancy, and certain medical conditions. It is always advisable to consult a healthcare professional or registered dietitian for personalized recommendations.