Can I use PHA twice a day?

Hello there, I have a quick question about the usage of PHA. I've heard that it's quite effective, but I'm unsure about the recommended dosage. Specifically, is it okay to use PHA twice a day? I'm wondering if there are any potential side effects or concerns I should be aware of before incorporating it into my daily routine. Your expertise in this matter would be greatly appreciated. Thank you in advance for your help!