Most non-prescription medical supplies and immunity-boosting supplements can be purchased at your local drug stores and online shops.
Please know that herbal supplements (malunggay, ampalaya, bawang, sambong, etc) and vitamin supplements are not regulated by the FDA.
Check with your doctor for any issues or interactions with any existing medications you are already taking, particularly blood thinners (warfarin/Coumadin), antibiotics, tuberculosis (TB) medications, or oral birth control pills.
If you live near Sta. Monica, you may find these non-prescription supplements at stores like Wishing Well Medical Supply.