Generally, large supermarkets have them, but pharmacies are not sure if they have them. Less than one hundred dollars. Generally, large supermarkets have them, but pharmacies are not sure if they have them. Less than one hundred dollars. Long-term non-use has no obvious effect. I used to use it, but now I bought it online, not from Yangshengtang. Less than ten yuan. I bought it as a mask. If it is taken orally, it is safer to buy it in a regular supermarket. Thank you for your adoption!