Professional Formulas L-Valine is a homeopathic formula offering support for tissue development, metabolism, and protein synthesis. For the temporary relief of stress, anxiousness, nervousness, sleeplessness, or increased appetite. Recommended Use: Place drops under tongue 30 minutes before/after meals. Adults and children 12 years and over: Take 10 drops up to 3 times per day. Consult a physician for use in children under 12 years of age.