In Jainism, upvaas (fasting) is a significant spiritual practice aimed at self-purification and control over desires. However, Jain teachings also emphasize the importance of prudent care of one's health and the principle of ahimsa (non-violence), which includes not causing harm to oneself.

If you suffer from asthma and require an inhaler, it is important to consider your health seriously. Jain scriptures and respected acharyas (spiritual teachers) have taught that preserving one's life and health takes precedence over ritual fasting. If skipping medication could cause serious harm, it is generally advised to prioritize health.

You may consider the following:

• Consult with a knowledgeable Jain monk, nun, or scholar for guidance specific to your situation.
• If you must use your inhaler during upvaas for health reasons, do so with the right intention and humility, understanding that the spirit of Jainism values intentions (bhav) over mere external observances.
• You can take a vow to perform another spiritual practice as atonement, such as extra pratikraman, reading Jain scriptures, or helping others.

Summary: It is permissible to take your asthma inhaler during upvaas if it is necessary for your health. Jainism teaches compassion towards oneself, and maintaining health is important for continuing spiritual practices. Always consult with your spiritual guide for personalized advice.