I turn to Gaia brand for herbal supplements. BLACK SEED OIL otherwise known as NIGELLA SATIVA OIL is a powerful anti-viral supplement. It is recommended nowadays by top doctors during times of viral outbreaks as an adjuvant therapy. Dose by body weight. I also use Gaia Ashwagandha, Rhodiola. and Oil of Oregano. Top ingredients in top quality products.
I took these to support my upper respiratory tract post-infection. After 10 days or so it feels less tight and my breathing is freer. This supplement works for me. Delivery was quick and packaging recyclable. Very happy.