While PQQ is available as a dietary supplement, it can also be obtained from various food sources. Foods such as green peppers, kiwi fruit, and fermented soy products like natto are known to be rich in PQQ. For those considering supplementation, it's essential to consult with a healthcare provider, as the appropriate dosage can vary based on individual health needs and conditions.
The primary application of Theophylline lies in the management of asthma and COPD. In asthma, it helps alleviate bronchoconstriction, while in COPD, it aids in reducing airway resistance. Theophylline is often prescribed when other bronchodilators, such as beta-agonists or anticholinergics, may not provide sufficient relief.