You cannot switch medications on your own without medical guidance
Limit carbonated drinks, alcohol, and spicy food
When to seek urgent advice: If you experience persistent vomiting, are unable to maintain adequate fluid intake, or develop severe abdominal pain, contact your prescriber, call NHS 111, or seek urgent medical attention
Others might share leftover medication with friends or family
Similarly, although hepatic dysfunction can occur with large niacin doses (1-3 grams daily over months) causing elevated liver enzymes or jaundice, niacinamide at 100 mg is very unlikely to have any adverse effect on the liver
Not only could that make them less inclined to approve the medication, they may also not have the knowledge and experience to guide your use